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hits of O because we're just filtering the word or if we do the oh we have this but it's a capital T and what I forgot to do is put a SL I at the end that tells it to be case insensitive so let's now refresh the timeline and things like that should be hidden um why is that not hidden well as soon as I clicked it it hea... | 168.4 | 0 | {
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until we're at like the last area where it hide or where it highlights everything we don't want to see and that is right here we can see we got the div and it's called Data test ID cell inner div so that's where this piece of it came from now before we end this video there is one thing I wanted to show really quick um ... | 233.879 | 0 | {
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you take care all and I will see you all next time | 291.28 | 0 | {
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what's going on YouTube this is IPC and we're going to be doing Tik Tok from hack the box which is another Sherlock challenge it's a defensive one and I haven't solved it myself I'm we're going to be doing it live I have helped a few people based upon the things they've asked me I kind of know what's in here but I have... | 0.08 | 0 | {
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they tricked it into running a program and this is something that happens so often you'll probably work this case at least once a month if you're in any type of ir right um someone calls you or you call them and they guide you into installing a legitimate remote access software like screen connect team viewer there's a... | 43.48 | 0 | {
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could be screen connect could be team viewers sometimes they get called c2s could also be like Cobalt strike Metasploit um I'm trying to think of the empires the Powell one there's a bunch of c2s it could be so I'm kind of interested what that is Task two says what is the session ID for initial access this leads me to ... | 90.799 | 0 | {
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attackers are using legitimate things like a legitimate remote access software legitimate way to encrypt the drive because they don't want to worry about antivirus right Defender isn't going to say hey Bit Locker you can't encrypt the drive um so it looks to me they're trying to encrypt it then they will extort glattus... | 141.84 | 0 | {
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right away at a lot of just um Advanced Techniques right now I will still look at them but if I want to get answers quickly I'd probably start at the more basic ones what is the name used by the attacker first and last name so I'm kind of curious how that obsc leak happens what IP address did the C2 connect back on so ... | 195 | 0 | {
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Defender give the C2 binary file so again if this is remote access software it could be some potentially unwanted program or application Pua um if it's C2 it could be like a remote access Trojan I forget what that last letter means it is a d so it probably indicates something maybe that says it's deleted um let's see w... | 245.68 | 0 | {
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more about that uh let's go over to um do I go let's see f11 and we can say IPC rocks and type like 32bit time and we see compromised I talk about it um there's probably multiple boxes I talk about time stamps but you can just search around um undetected compromised those are ones I would definitely talk about right an... | 302.759 | 0 | {
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tell you it changed so we definely need to look at that and I'm also laughing because before what time did the access start just before that question attack is manipulating time after that question attack is M play time you can't trust time what time did it start I just find that funny um I'm be curious if we can get a... | 364.68 | 0 | {
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with what I'm answering but I typically don't Focus my investigation around answers because that's not realistic and we learn so many cool things when we go off the reservation right so let's look at what we have um I'm in this collection directory already um this these files are just going to be like cape output this ... | 414.919 | 0 | {
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forget we need to make myself smaller so I don't keep getting in the way of things so let's take a look um what I want to start with is well I see it right now we have mft so I think that's called the master file table um it's like the nft uh and um Dr and I'm blanking on the file system name that Windows likes using N... | 464.919 | 0 | {
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profile because we got in app data so we can say logs. log um user profile let's see MP CMD run this is going to be Defender this up here is also Defender um I'm guessing this is like a schedule task that's running because users typically Don't just run it's in a utf16 format and I don't know the flag off top my head t... | 527.88 | 0 | {
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uh because if they get a phone call that means um they probably downloaded the file with their browser so uh let's see the last thing we have and sorry I'm a bit scattered my dog wants to go outside and she's whining at the door so sidetracking while we get through this um let's see there is a prefetch directory so let... | 610.72 | 0 | {
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they do it essentially um I want to say it struts up a binary Card War fault and then injects whatever they want to run into that so you can't see the exact thing they are trying to run um let's see we got that prefect um we have event logs already I guess the last thing we would want to look at is do we have the regis... | 672.72 | 0 | {
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piy and then specify the Sam file um the system file uh let's do security as well and then say local and this is going to Output a bunch of information um 31 D6 this is a blank ntlm Hash A a3b or a d3b blank LM hash so no administrator password No guest password no um default account these accounts are probably disable... | 714.72 | 0 | {
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individually because this is just using um a database right so they have is that 8 billion unique passwords um if it doesn't crack they may try to use a rule file to crack it and if like a company name is in that now they know the password you don't and that's a big info leak right but we're in investigation attackers ... | 787.36 | 0 | {
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because it having this um same password on every machine means users can likely just do lateral movement with this password they don't even need to crack it because they can just uh pass the hash and then they can just access all the workstations as admin right um one of the big things they access all the workstations ... | 850.68 | 0 | {
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have like active directory of course maybe every user has their own local account just don't have the same password on every machine because that is really really bad um let's see so let's go back to what we have so we've done registry Hive now I'm going to set up things to look at mftn event logs because this can take... | 903.079 | 0 | {
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pretty much the mft analysis program works best on Windows I don't know how to do it on Linux apparently chainsaw does support it but I can't get it working so I always use Windows for that um it's the main reason I'm using Windows for this uh video so let's do C colon users IPC desktop um mft cmd.exe this is the progr... | 973.12 | 0 | {
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dash there we go so not sure if I said it I got distracted um CSV is useful for like a program like timeline Explorer if you load it to excel I like just pressing Json but you can't really go to the CSV easily if you only did Json so just like my end map I output it in every possible format because it doesn't really ta... | 1,037.959 | 0 | {
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say chainsaw mappings it's Sigma event logs all okay and then after this um we got to give the event log directory I want to say and then maybe we can just say outfile real quick um chainsaw. | 1,108 | 0 | {
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hunt. log and then let's do Mount C Sherlocks Tik Tock um collection C Windows where are vent log stored find. grap evtx uh let's see we did Windows system 32 logs paste that let's get rid of the double that run it and it looks like it is chugging along awesome shoot uh there is a skip error right let's see chainsaw hu... | 1,127.76 | 0 | {
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sh and let's do for log in we really should go to this directory copy this bwd grab it there's probably a better way to do this but this is how I do it so we grab every single log file then we do a do and we want to do a chainsaw dump let's not forget to skip errors Das o um this is going to be out file so we're going ... | 1,206.84 | 0 | {
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dumping all the logs so we have chainsaw running so what we have um I don't want to say done we'll say gathered um running so what do we want to look at first um let's go for prefetch CD collection C windows prefetch and let's see let's pipe this over to less this is not interesting dism Hurst eh not exactly interestin... | 1,317.64 | 0 | {
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this a lot of users may not run notepad and I do see ransomware people like use notepad to communicate with the person um Power shell probably not interesting because power shell always runs in the background run DL 32s not exactly interesting um that's just going to flood it it could be um each of these are different ... | 1,430.679 | 0 | {
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logs it's still a good indicator it's something you want to know I'm going to highlight all the team viewer stuff um where fault I am going to highlight this one just because it's so often used in c2s that like we want to look at the time of Warf fault and find um a confliction right because that would indicate they're... | 1,503.44 | 0 | {
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installed like a plugin that let me um let's just do team viewer exe and setup Merlin team viewer okay we'll do that and let's do setup grab this okay so let's see Team Viewer this is five 4 1234 pretty much the same time so as soon as it installs it runs okay so let's answer one of those questions real quick um name o... | 1,622.72 | 0 | {
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log let's see I'm guessing it's going to be this this looks good so team viewer log what do we have um let's see I'm looking for like a connect event right participant so this is a host name um a name here so let's copy this uh let's go contrl n 30 team viewer log um name of let's do interesting lines okay we have that... | 1,750 | 0 | {
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VNC session and they're having trouble let's see there's got to be a better way we can look at this um server URL there's nothing indicative here I was hoping it would have like the client ID or the license ID or something of saying um valid hours to that is interesting oh right file right here uh let's see 1121 um I c... | 1,873.24 | 0 | {
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so we have a few things we want to look at um I'm just going to go in this directory and show you a technique I normally use to confirm or not confirm but to help make sure I got everything I want to right so let's cat this team vior then we're going to pipe it over to a and we're going to say um give me this is 1 two ... | 1,976.039 | 0 | {
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so let's GP sender out of this log um Team Viewer 15 VoIP sender oh this is the line it was Center thread pool so instead of doing all that let's just go back here pipe to another a field separator of a colon print one sort uni- C sort DN and this is going to be a little bit less to go through and I think we have every... | 2,069.48 | 0 | {
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of Team Viewer logs and they uploaded Merlin so again on the name of C2 agent we can also link to our 30 team viewer log and say interesting lines there is there anything else we called out desktop name oh the name of the attacker full name used 30 team viewer logs interesting lines and that was frit off right okay so ... | 2,178.76 | 0 | {
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3 I don't know my password for this sweet it's always password um let's see now we have it we can do a do dump uh is it schema oh God I hate skial light um let's see SQL light history history visits let's see let's just do dum g-i HTP okay it's going to go in Mozilla places um schema MOS places so we can say select um ... | 2,282.96 | 0 | {
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date would be good last visit date from M's places there we go I will put this I don't know if this is the exact history but it's close enough um 40 history and again when you do like in like this type of investigation the first comb through data doesn't have to be um indepth and good right you just want to get a gener... | 2,430.319 | 0 | {
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that let's see does this there we go that is ugly we spent all that time and I do not like it I guess that's because I'm in some weird view of this but I guess that's fine so we have Team Viewer this is where we downloaded it so we can highlight this and this is not Epoch time this is Windows Epoch time I think guess w... | 2,599.68 | 0 | {
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we'll come back to that so IP time initial access I am going to put an thing on History um you were downloaded I should call this browser does this automatically update power shell time initial access it does sweet and I'm not going to fully trust this time because I don't like how we got it um that's just when they do... | 2,733.28 | 0 | {
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that's done on glattus unless there's something interesting in team viewer logs I think that's the log file we looked at so we'll say that is done so all that's left is analyzing event logs it looks like um yeah so is that all done we are still dumping logs um this is Windows state repository let's just go into our ana... | 2,825.88 | 0 | {
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it so we have log T tampering so four times the logs got reset um this is back in 2022 1027 Defender head alerts 2023 oh the workstation name is wait oh that's the user never mind um desktop d psm4 pf8 let's go to the team viewer logs so the attackers workstation was R30 um our workstation name is DSM so I'm just going... | 2,910.44 | 0 | {
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everyone I can say four times okay so this is registry things RDP events again all this is 2022 this is old we have a new one session log off um glattus default user gold image gold image um glattus RDP let's see let's do this be events gladus RDP should say like notable um and I'm going to call one of these gold image... | 3,042.24 | 0 | {
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importantly that's when we know cismon was probably deployed right uh potential defense by raw disk access what is doing raw disk access this looks like it is system cismon that's fine probably defense EV asion cismon auto run key modified explore modified it run once gladus I don't see exactly what they are changing m... | 3,156.52 | 0 | {
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PID Source host name Source IP that goes in interesting okay so we have what IP did the C2 connect to that's in chainsaw hunt it's probably going to be in other things but um yeah and hopefully this isn't boring you right um the whole purpose of this kind of is to show you all the information you can just get when you ... | 3,275.839 | 0 | {
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okay this is probably time of initial access um talks to time that okay let's see ipc2 we've answered that Defender we still need bit Locker password we need poell script name we need time initial access we have that and let's say um where is it that's in 50 chainsaw hunt notable Sigma there we go and can say team view... | 3,363.76 | 0 | {
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here it is not as well um we're striking out on all the logs let's see fora application oh there's a poell log poell operational oh we didn't look at poell console history that's a good one to look at um we want to go here collection find. g-i console it was console host history right but yeah we have this so set execu... | 3,473.039 | 0 | {
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operational is blank okay um cismon operational is still processing so I think I'm actually going to pause the video get a drink of water and we'll come back because uh we still have things right uh probably shouldn't have dumped every single log and just focused on the ones I want because however long this video has b... | 3,605.079 | 0 | {
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ID um let's see 80 maybe at system okay three so three is going to be a network event ID uh we want to go to cismon event IDs and see what there is right um does this page list it okay it does so like one is a process creation three is network connection we have image load create remote thread process access we probabl... | 3,666.72 | 0 | {
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is 11 file create so we can see when files were created 13 um registry events 16 is service configuration change only one of those um this could be like persistence so we could easily look at that um let's see trying to think of a good way to do this maybe JQ dot like that and then we want to do A- c and- c is going to... | 3,754.68 | 0 | {
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everything on one line and then I just want to um GP for the like tag I want and then I pipe it back to JQ to split it up um that's the easiest way to work with this that I found you could do a fancy select statement which I do and like I like too but um this is my natural way to do it so let's go back to the fancy com... | 3,843.279 | 0 | {
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there's them interacting with Team Viewer but this is just kind of how i' search through l on a quick glance but the one I want to focus on is event ID one process creation and I'm going to get away from doing my hacky way to GP this because when you do it you lose a lot of information right so let's do like this and t... | 3,918.68 | 0 | {
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and this is going to be all the process creation events so what I want to do is now we'll select the fields we want to show and I'm going to try something real quick um could I easily put this on one line I don't think no I was trying to split it up on lines doesn't look easy we'll copy it once we're done and go over t... | 3,998.799 | 0 | {
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"url": "https://www.youtube.com/watch?v=IL0cI_GkJxU"
} |
parent process ID could be good um the process ID could be good and the user plus UTC time so those the fields I want um trying to think of a good way to do this let's just do this um command line Event Event data dot command line and a comma let's see if this works for us then we want current directory um original fil... | 4,081.799 | 0 | {
"video_id": "IL0cI_GkJxU",
"title": "IR Employee Fell for a Call Center - HTB Sherlocks - Tick Tock",
"url": "https://www.youtube.com/watch?v=IL0cI_GkJxU"
} |
UTC time so I think that's all the fields I'm going to encapsulate it in these brackets um G to write to out and I wonder if I can just copy it like this and paste it in um was out the you have UTC time okay I don't know why UTC time didn't show on this one that was bizarre so we have that let's go here we put the brac... | 4,172.92 | 0 | {
"video_id": "IL0cI_GkJxU",
"title": "IR Employee Fell for a Call Center - HTB Sherlocks - Tick Tock",
"url": "https://www.youtube.com/watch?v=IL0cI_GkJxU"
} |
everything that has Merlin in it Merlin PID um what is this oh this is them probably launching Merlin through Explorer but we can see everything with Merlin in it um the parent command line Merlin is doing woral so either it crashed or they spawned woral as a sacrificial process and then ran something uh let's see Expl... | 4,294.96 | 0 | {
"video_id": "IL0cI_GkJxU",
"title": "IR Employee Fell for a Call Center - HTB Sherlocks - Tick Tock",
"url": "https://www.youtube.com/watch?v=IL0cI_GkJxU"
} |
the parent process is Merlin here and here they are trying to do a mini dump I'm guessing they didn't do double backslashes and treated the backslashes and Escape so this command probably failed um we would want to look at C colant temp el. dump to see if this existed right so let's go over to the mft dump this will be... | 4,375.48 | 0 | {
"video_id": "IL0cI_GkJxU",
"title": "IR Employee Fell for a Call Center - HTB Sherlocks - Tick Tock",
"url": "https://www.youtube.com/watch?v=IL0cI_GkJxU"
} |
use Merlin for again we're not seeing um a lot of data because we're only looking at event ID one if we got rid of that select and looked at all the data now we're going to start seeing um the network connections right and all these are know because network doesn't have these lines we have to write a different filter t... | 4,445.08 | 0 | {
"video_id": "IL0cI_GkJxU",
"title": "IR Employee Fell for a Call Center - HTB Sherlocks - Tick Tock",
"url": "https://www.youtube.com/watch?v=IL0cI_GkJxU"
} |
password is what it is um let's go back here how do I want to show this what pain was I on zero that's it so I'm going to copy this we're going to make a note and I'm going to just call this 70 sysmon and let's see this field is um Powers shell Json like that and we can make a note that let's see encoded PS like that s... | 4,516 | 0 | {
"video_id": "IL0cI_GkJxU",
"title": "IR Employee Fell for a Call Center - HTB Sherlocks - Tick Tock",
"url": "https://www.youtube.com/watch?v=IL0cI_GkJxU"
} |
Powershell is there anything else um there's this command jab I think that may be the same one we just looked at b 64- d that is uh pre-download that doesn't look fishy okay so we looked at Powershell um what other things would we want to look at in cismon I don't exactly know Defender category time changes so I want t... | 4,631.76 | 0 | {
"video_id": "IL0cI_GkJxU",
"title": "IR Employee Fell for a Call Center - HTB Sherlocks - Tick Tock",
"url": "https://www.youtube.com/watch?v=IL0cI_GkJxU"
} |
Json it did not parse that's not good um why did it not purse I guess there was something bad in this log file so I'm actually have to pause and figure out um how to do this I guess we can try log dump let's try this command again again chainsaw dump d o running this again wouldn't help there must be something wrong in... | 4,730.6 | 0 | {
"video_id": "IL0cI_GkJxU",
"title": "IR Employee Fell for a Call Center - HTB Sherlocks - Tick Tock",
"url": "https://www.youtube.com/watch?v=IL0cI_GkJxU"
} |
the machine so we can answer that later initial access yeah so I'm going to pause the video figure out a better way or a different way to convert these Json things so we can um actually analyze them CU that's weird Okay so o xdf used a tool to called evtx CMD and this is the same place where um a bunch of other the too... | 4,834.8 | 0 | {
"video_id": "IL0cI_GkJxU",
"title": "IR Employee Fell for a Call Center - HTB Sherlocks - Tick Tock",
"url": "https://www.youtube.com/watch?v=IL0cI_GkJxU"
} |
desktop EVT CMD make sure it runs it does uh we want to specify the file and the log let's cat log dump. sh it's going to be in this directory as security. | 4,926.36 | 0 | {
"video_id": "IL0cI_GkJxU",
"title": "IR Employee Fell for a Call Center - HTB Sherlocks - Tick Tock",
"url": "https://www.youtube.com/watch?v=IL0cI_GkJxU"
} |
evtx security. | 4,947.44 | 0 | {
"video_id": "IL0cI_GkJxU",
"title": "IR Employee Fell for a Call Center - HTB Sherlocks - Tick Tock",
"url": "https://www.youtube.com/watch?v=IL0cI_GkJxU"
} |
evtx what if we can do the forward slashes I guess we'll find out okay uh we want say Json and then where we output the logs I think so C colon Sherlocks analysis uh what do we call it see call strocks Tik Tock analysis event new um CD new that is not what I expected it is not a evtx file did something happen when I wa... | 4,956.719 | 0 | {
"video_id": "IL0cI_GkJxU",
"title": "IR Employee Fell for a Call Center - HTB Sherlocks - Tick Tock",
"url": "https://www.youtube.com/watch?v=IL0cI_GkJxU"
} |
syntax um let's see evtx how do we use this F follow a process that is not it darn I was hoping that's what happened let's try this again hey it is outputting and it's warning us the time goes backwards because we can't trust the time here and that went super fast um I've never used JQ on one of these events let's let'... | 5,126.239 | 0 | {
"video_id": "IL0cI_GkJxU",
"title": "IR Employee Fell for a Call Center - HTB Sherlocks - Tick Tock",
"url": "https://www.youtube.com/watch?v=IL0cI_GkJxU"
} |
was changed I want to make sure this is all the same that is so the system time was changed a lot um if we do a jq- c it's going to put it all on one line so if we just count the number of lines here we can see that can't be correct 2374 times what 2,374 that is not correct okay good um something weird is going on prev... | 5,264.199 | 0 | {
"video_id": "IL0cI_GkJxU",
"title": "IR Employee Fell for a Call Center - HTB Sherlocks - Tick Tock",
"url": "https://www.youtube.com/watch?v=IL0cI_GkJxU"
} |
this output um less let's go through each of this we have previous Time new time uh this executable info do we want to look at executable info g-i executable there we go so we have a few things that are not Powershell so let's do jq- c so we put it all on one line g-i Powershell wc- l all but three 2371 is that right o... | 5,408.239 | 0 | {
"video_id": "IL0cI_GkJxU",
"title": "IR Employee Fell for a Call Center - HTB Sherlocks - Tick Tock",
"url": "https://www.youtube.com/watch?v=IL0cI_GkJxU"
} |
we've now um copied the new log right so I can probably just do star Defender star does that work Maps loaded do we have data I think we do uh do not maybe that's three bites that is not the defender log di C colon Sherlocks Tik Tock collection C Windows system 32 when event logs let's do Defender operational they prob... | 5,520.6 | 0 | {
"video_id": "IL0cI_GkJxU",
"title": "IR Employee Fell for a Call Center - HTB Sherlocks - Tick Tock",
"url": "https://www.youtube.com/watch?v=IL0cI_GkJxU"
} |
this copy C JQ dot is this Defender it is okay so let's do a less and what do we want um there's probably Merlin right there we go so we have process detection this is the entry let's go back here 80 Defender log we can say that's Json Merlin detection so let's see um grab this 80 Merlin detection so we have Defender c... | 5,674.76 | 0 | {
"video_id": "IL0cI_GkJxU",
"title": "IR Employee Fell for a Call Center - HTB Sherlocks - Tick Tock",
"url": "https://www.youtube.com/watch?v=IL0cI_GkJxU"
} |
log CU there were two right or there just one Defender let's see what are the actual questions Sid time initial access Chaw sums I'm just going to quickly look to see if there's a log file we're missing and then I'll look at Defender more MP log MP detection that is UTF there a lot more data in this log let's see see w... | 5,853.199 | 0 | {
"video_id": "IL0cI_GkJxU",
"title": "IR Employee Fell for a Call Center - HTB Sherlocks - Tick Tock",
"url": "https://www.youtube.com/watch?v=IL0cI_GkJxU"
} |
locations um because those logs have different things so time initial access we have a few times um let's see victim user Sid so I really want to find that s like the Sid of the user um bet that's in does Secrets dump tell us can we get like Sid local turn debug on maybe maybe that gets it let's see I'm going to exampl... | 6,045.8 | 0 | {
"video_id": "IL0cI_GkJxU",
"title": "IR Employee Fell for a Call Center - HTB Sherlocks - Tick Tock",
"url": "https://www.youtube.com/watch?v=IL0cI_GkJxU"
} |
1001 so we did have that this didn't get anything um I think if we do a grap Das R A and then put a period after each of that it's going to get that utf16 little Indian it does and oh man that is a lot more information so we want to get for what glattus is um what if we did star there then dash one 0 0 that going to be... | 6,158.04 | 0 | {
"video_id": "IL0cI_GkJxU",
"title": "IR Employee Fell for a Call Center - HTB Sherlocks - Tick Tock",
"url": "https://www.youtube.com/watch?v=IL0cI_GkJxU"
} |
log we'll just run this GP against these logs um Dash exac grap a s dot dash we'll do S15 do it the same way that did not get anything we put this in quotes nope I could have swore that string existed maybe it doesn't let's see I'm going to go back to the secret stump see colon Windows says 32 config secret stump. | 6,220.32 | 0 | {
"video_id": "IL0cI_GkJxU",
"title": "IR Employee Fell for a Call Center - HTB Sherlocks - Tick Tock",
"url": "https://www.youtube.com/watch?v=IL0cI_GkJxU"
} |
py Sam security uh system local so she is 103 where is my notes this is okay this was 1001 so knowing that we know it's even begin with like a s-1 D5 then the computer Sid then the user Sid let's add a debug what does debug show us Target boot key new style hash nothing dump. | 6,303.04 | 0 | {
"video_id": "IL0cI_GkJxU",
"title": "IR Employee Fell for a Call Center - HTB Sherlocks - Tick Tock",
"url": "https://www.youtube.com/watch?v=IL0cI_GkJxU"
} |
p-h user status history there's a display uh DC options times St no let's see g- a i S15 on uh maybe the Sam security grap 13 this is probably it we probably got that a bad way but um this is probably I'm curious let's see that is it um I don't think we got that the correct way definitely check out like oxd F's write u... | 6,368.96 | 0 | {
"video_id": "IL0cI_GkJxU",
"title": "IR Employee Fell for a Call Center - HTB Sherlocks - Tick Tock",
"url": "https://www.youtube.com/watch?v=IL0cI_GkJxU"
} |
ID name the executable that's merlin. | 6,547.52 | 0 | {
"video_id": "IL0cI_GkJxU",
"title": "IR Employee Fell for a Call Center - HTB Sherlocks - Tick Tock",
"url": "https://www.youtube.com/watch?v=IL0cI_GkJxU"
} |
exe okay we have two questions um Defender category that is weird um where do we pull that from Defender logs so Merlin wonder if there's no slash if it's just no it does have the Slash see one two three four five six seven one two three four five I bet there's two logs and there's probably a different category of win3... | 6,552.56 | 0 | {
"video_id": "IL0cI_GkJxU",
"title": "IR Employee Fell for a Call Center - HTB Sherlocks - Tick Tock",
"url": "https://www.youtube.com/watch?v=IL0cI_GkJxU"
} |
log let's go back in the command line log I'm just going to CD to this directory because that space that space upsets me so we can run a strings on this grap dasi m y r DD we keep getting this detection do they want verol that is part of the detection okay um time initial access so let us figure this out um this is whe... | 6,647.159 | 0 | {
"video_id": "IL0cI_GkJxU",
"title": "IR Employee Fell for a Call Center - HTB Sherlocks - Tick Tock",
"url": "https://www.youtube.com/watch?v=IL0cI_GkJxU"
} |
work no uh I lost my page so let's do that so I can see this 2023 month day 2023 04 I think May five I think um no what is it month day I hate timestamp things I'm actually going to pause the video and find a way to convert this on the date command line um maybe I don't have to pause it can I just do this real quick wi... | 6,790.36 | 0 | {
"video_id": "IL0cI_GkJxU",
"title": "IR Employee Fell for a Call Center - HTB Sherlocks - Tick Tock",
"url": "https://www.youtube.com/watch?v=IL0cI_GkJxU"
} |
let's see um Team Viewer participation we a session that's a participant try this because that's his desktop connecting to us right wrong answer was I the Right format believe so month day yeah 5504 let's just go back into this log let's see find dot- name star. log Less on Team Viewer actually got a copy it okay let's... | 6,924.96 | 0 | {
"video_id": "IL0cI_GkJxU",
"title": "IR Employee Fell for a Call Center - HTB Sherlocks - Tick Tock",
"url": "https://www.youtube.com/watch?v=IL0cI_GkJxU"
} |
but um I guess maybe it's beneficial maybe I'll do more preparation in the future because that was more painful than I expected um always the simple things that are heard right and I don't say more painful than I expected in a bad way I mean I learned a lot about the logs I thought this would be something I would just ... | 7,122.599 | 0 | {
"video_id": "IL0cI_GkJxU",
"title": "IR Employee Fell for a Call Center - HTB Sherlocks - Tick Tock",
"url": "https://www.youtube.com/watch?v=IL0cI_GkJxU"
} |
what's going on YouTube this is ipsec and we're going to be doing another Str loock today from hack the box which are just defensive challenges this time it is going to be Crown Jewel 2 which is a sequel to Crown Jewel one and if you haven't watched that first video I would highly recommend doing so because I'm not goi... | 0.12 | 0 | {
"video_id": "PXWrCK7bgB0",
"title": "Log Analysis and Chainsaw Rule Creation - HTB Sherlocks - CrownJewel2",
"url": "https://www.youtube.com/watch?v=PXWrCK7bgB0"
} |
do these Sherlocks because as I do the Sherlocks I create the rule files and then when I go on engagements do forensics I replay those rule files against the uh data from the engagement and I discover how good my actual rule was if there were a lot of false positives or not and if there weren't false positives then the... | 41.079 | 0 | {
"video_id": "PXWrCK7bgB0",
"title": "Log Analysis and Chainsaw Rule Creation - HTB Sherlocks - CrownJewel2",
"url": "https://www.youtube.com/watch?v=PXWrCK7bgB0"
} |
attackers in the last one and they have managed to dump ntds.dit yet again if we look at the Sherlock info page it does tell us they used ntds util to dump it um it also um says it here as well I recommend reading both the scenario in the info before you begin and you could also start reading the questions but I like l... | 82.64 | 0 | {
"video_id": "PXWrCK7bgB0",
"title": "Log Analysis and Chainsaw Rule Creation - HTB Sherlocks - CrownJewel2",
"url": "https://www.youtube.com/watch?v=PXWrCK7bgB0"
} |
mapping flag to put it in opt chainsaw mappings and then what is it like Sigma event logs all. yl and then we got to give it the sigma directory which is just a lot of just default rules so do op chainsaw Sigma and then custom chainsaw rules is-- rule opt chainsaw rules so if we run this command it should output a tabl... | 135.2 | 0 | {
"video_id": "PXWrCK7bgB0",
"title": "Log Analysis and Chainsaw Rule Creation - HTB Sherlocks - CrownJewel2",
"url": "https://www.youtube.com/watch?v=PXWrCK7bgB0"
} |
a volume Shadow copy Mount and we can see device hard disk Shadow uh copy one um was initiated and this is suspicious to me um sometimes environments do use Shadow copies and you see a lot of these it may not be suspicious but it indicating it's the first copy this is definitely suspicious cuz it looks like the domain ... | 190.159 | 0 | {
"video_id": "PXWrCK7bgB0",
"title": "Log Analysis and Chainsaw Rule Creation - HTB Sherlocks - CrownJewel2",
"url": "https://www.youtube.com/watch?v=PXWrCK7bgB0"
} |
like accessing overshadow copies is like the Sam which is part of the registry the system like all those files right I think it's like C and windows uh probably system 32 config or maybe it's just C and windows config and then the file would be called Sam right so the registry Highs are important and also ntds.dit um b... | 236.239 | 0 | {
"video_id": "PXWrCK7bgB0",
"title": "Log Analysis and Chainsaw Rule Creation - HTB Sherlocks - CrownJewel2",
"url": "https://www.youtube.com/watch?v=PXWrCK7bgB0"
} |
when I wasn't in the high abusa directory it would create a directory called rules and put them there so that's why I always like cing to this directory before I run the tool just so everything stays organized so the next one we want to run let's see it's probably going to be a CSV timeline let's just go with that so I... | 292.6 | 0 | {
"video_id": "PXWrCK7bgB0",
"title": "Log Analysis and Chainsaw Rule Creation - HTB Sherlocks - CrownJewel2",
"url": "https://www.youtube.com/watch?v=PXWrCK7bgB0"
} |
and we got some detections so looking at this we have 12 medium detections and and going up it is all ntds util abuse so we have dump to a suspicious location and if we look here we have C colon Windows temp dump temp active directory ntds.dit so that is white flagged right um we also have it just being ran I guess her... | 354.28 | 0 | {
"video_id": "PXWrCK7bgB0",
"title": "Log Analysis and Chainsaw Rule Creation - HTB Sherlocks - CrownJewel2",
"url": "https://www.youtube.com/watch?v=PXWrCK7bgB0"
} |
creation um ntds util abuse um no critical or high alerts but this is a pretty cool tool if you don't want to like um go deep diving into your logs right away I like running this just to see what it points out right so a lot of group enumeration stuff and things like that um when you do the everything option obviously ... | 416.039 | 0 | {
"video_id": "PXWrCK7bgB0",
"title": "Log Analysis and Chainsaw Rule Creation - HTB Sherlocks - CrownJewel2",
"url": "https://www.youtube.com/watch?v=PXWrCK7bgB0"
} |
last Crown rule that was in the um I think system log and I'm just going to cat a file out of the last video um it's going to be system. text and this is where we did all the event IDs um what they mean and then how much they occurred and I want to look at a service change State and that's going to be event ID 7036 so ... | 472.12 | 0 | {
"video_id": "PXWrCK7bgB0",
"title": "Log Analysis and Chainsaw Rule Creation - HTB Sherlocks - CrownJewel2",
"url": "https://www.youtube.com/watch?v=PXWrCK7bgB0"
} |
L it puts it in this list and then um yeah it just puts it kind of in a list and does like in the Json L format doesn't doting nesting in the last video I used this to get rid of the nesting um if we look at the logs it's not there but what I'm going to do here is change it to do dump Json L because I like this format ... | 530.64 | 0 | {
"video_id": "PXWrCK7bgB0",
"title": "Log Analysis and Chainsaw Rule Creation - HTB Sherlocks - CrownJewel2",
"url": "https://www.youtube.com/watch?v=PXWrCK7bgB0"
} |
grab the system log so we're going to do event system Channel system so we're going to do a JQ Dot and then a select um I'm going to specify event here so I don't have to keep typing event every single time um system. channel is equal to system right I think I did that right looking at that yes the first um event is no... | 603.32 | 0 | {
"video_id": "PXWrCK7bgB0",
"title": "Log Analysis and Chainsaw Rule Creation - HTB Sherlocks - CrownJewel2",
"url": "https://www.youtube.com/watch?v=PXWrCK7bgB0"
} |
and. system oh no this is going to be event data. pram 2 is equal to running because that's what the question asks right um most recent time stamp wish the service yep it did so now that we have running I'm only going to look at pram one and we're going to get a list of all the services and Let's see we can GP this for... | 692.959 | 0 | {
"video_id": "PXWrCK7bgB0",
"title": "Log Analysis and Chainsaw Rule Creation - HTB Sherlocks - CrownJewel2",
"url": "https://www.youtube.com/watch?v=PXWrCK7bgB0"
} |
forgot to copy that too so this is the most recent time volume Shadow copy went into a running state yeah okay it does not like the T it wants a space here and we'll see if this is works it does awesome so identify the full path of the dumped ntds file so that's something the hunt command already told us we want to loo... | 770.72 | 0 | {
"video_id": "PXWrCK7bgB0",
"title": "Log Analysis and Chainsaw Rule Creation - HTB Sherlocks - CrownJewel2",
"url": "https://www.youtube.com/watch?v=PXWrCK7bgB0"
} |
I normally like researching the commands um before I do a lot of like analysis we don't see them actually specifying a file name in this they just specify the directory for the dump to go to I think so because they're not specifying a file name we can just make hunt rules targeted towards files thems and we want to loo... | 843.8 | 0 | {
"video_id": "PXWrCK7bgB0",
"title": "Log Analysis and Chainsaw Rule Creation - HTB Sherlocks - CrownJewel2",
"url": "https://www.youtube.com/watch?v=PXWrCK7bgB0"
} |
let's see this one has a recovery cache that is bizarre I could swear one of those is like ntds util has finished uh let's do 326 Different Page uh this is the same exact information all right so I'm going to go with 326 is it started and 327 is it finished um I'm not positive though so okay let us look at those events... | 929.44 | 0 | {
"video_id": "PXWrCK7bgB0",
"title": "Log Analysis and Chainsaw Rule Creation - HTB Sherlocks - CrownJewel2",
"url": "https://www.youtube.com/watch?v=PXWrCK7bgB0"
} |
hausa and it told us where that dumped uh let's see I'm going to look at 327 or 326 since that was 327 logs attached let's see 1 2 3 4 five dfsr so it look look like this event is slightly different DS token don't exactly know what that file is um I the FSR does this one have an ntds even let's see what I'm going to do... | 1,029.36 | 0 | {
"video_id": "PXWrCK7bgB0",
"title": "Log Analysis and Chainsaw Rule Creation - HTB Sherlocks - CrownJewel2",
"url": "https://www.youtube.com/watch?v=PXWrCK7bgB0"
} |
with um 327 JQ let's create a rule F to extract this because it got a double these double slashes and I think it would be just a pain to extract that with JQ it' be quicker just to erase them but what we could do is create the hunt file and then not have that to begin with so when I was looking at chainsaw hunt files I... | 1,123.64 | 0 | {
"video_id": "PXWrCK7bgB0",
"title": "Log Analysis and Chainsaw Rule Creation - HTB Sherlocks - CrownJewel2",
"url": "https://www.youtube.com/watch?v=PXWrCK7bgB0"
} |
it's much more user friendly and then we give it a condition so we have condition failed logins and not empty so we got two things fail logins here which is going to be a 4625 and empty is going to be um username is null right and this means it wants more than five of these so we got an aggregate as well so you can do ... | 1,185.28 | 0 | {
"video_id": "PXWrCK7bgB0",
"title": "Log Analysis and Chainsaw Rule Creation - HTB Sherlocks - CrownJewel2",
"url": "https://www.youtube.com/watch?v=PXWrCK7bgB0"
} |
Brute Force if we do a F-Type F there's not really a strict naming convention I like the event ID and then a description so that's the one I'm going to use so I'm going to CP um let's just do the login one again and then we'll call this uh what do we want to call it um Eid 327 ntds util dump ntds that seems fine um yl ... | 1,250.919 | 0 | {
"video_id": "PXWrCK7bgB0",
"title": "Log Analysis and Chainsaw Rule Creation - HTB Sherlocks - CrownJewel2",
"url": "https://www.youtube.com/watch?v=PXWrCK7bgB0"
} |
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