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Security-TTP-Mapping

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AppleJeus has XOR-encrypted collected system information prior to sending to a C2. AppleJeus has also used the open source ADVObfuscation library for its components.
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AppleSeed has the ability to Base64 encode its payload and custom encrypt API calls.
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Aria-body has used an encrypted configuration file for its loader.
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Astaroth obfuscates its JScript code, and has used an XOR-based algorithm to encrypt payloads twice with different keys.
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AuditCred encrypts the configuration.
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Avaddon has used encrypted strings.
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Avenger has the ability to XOR encrypt files to be sent to C2.
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BLINDINGCAN has obfuscated code using Base64 encoding.
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BLUELIGHT has a XOR-encoded payload.
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BOOSTWRITE has encoded its payloads using a ChaCha stream cipher with a 256-bit key and 64-bit Initialization vector (IV) to evade detection.
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BackdoorDiplomacy has obfuscated tools and malware it uses with VMProtect.
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Bazar has used XOR, RSA2, and RC4 encrypted files.
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BendyBear has encrypted payloads using RC4 and XOR.
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BitPaymer has used RC4-encrypted strings and string hashes to avoid identifiable strings within the binary.
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BlackOasis's first stage shellcode contains a NOP sled with alternative instructions that was likely designed to bypass antivirus tools.
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Blue Mockingbird has obfuscated the wallet address in the payload binary.
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BoomBox can encrypt data using AES prior to exfiltration.
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Bumblebee has been delivered as password-protected zipped ISO files and used control-flow-flattening to obfuscate the flow of functions.
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CARROTBAT has the ability to download a base64 encoded payload and execute obfuscated commands on the infected host.
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Carbanak encrypts strings to make analysis more difficult.
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Carberp has used XOR-based encryption to mask C2 server locations within the trojan.
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Chimera has encoded PowerShell commands.
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Chinoxy has encrypted its configuration file.
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Cobalt Group obfuscated several scriptlets and code used on the victim’s machine, including through use of XOR and RC4.
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Cobalt Strike can hash functions to obfuscate calls to the Windows API and use a public/private key pair to encrypt Beacon session metadata.
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CoinTicker initially downloads a hidden encoded file.
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ComRAT has used encryption and base64 to obfuscate its orchestrator code in the Registry. ComRAT has encrypted its virtual file system using AES-256 in XTS mode and has encoded PowerShell scripts.
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Comnie uses RC4 and Base64 to obfuscate strings.
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Conficker has obfuscated its code to prevent its removal from host machines.
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Conti can use compiler-based obfuscation for its code, encrypt DLLs, and hide Windows API calls.
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CookieMiner has used base64 encoding to obfuscate scripts on the system.
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Cuba has used multiple layers of obfuscation to avoid analysis, including its Base64 encoded payload.
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DCSrv's configuration is encrypted.
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DRATzarus can be partly encrypted with XOR.
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Dacls can encrypt its configuration file with AES CBC.
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DanBot can Base64 encode its payload.
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Dark Caracal has obfuscated strings in Bandook by base64 encoding, and then encrypting them.
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DarkWatchman has used Base64 to encode PowerShell commands. DarkWatchman has been delivered as compressed RAR payloads in ZIP files to victims.
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Denis obfuscates its code and encrypts the API names. Denis also encodes its payload in Base64.
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Diavol has Base64 encoded the RSA public key used for encrypting files.
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Donut can generate encrypted, compressed/encoded, or otherwise obfuscated code modules.
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Dridex's strings are obfuscated using RC4.
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Droppers used by Putter Panda use RC4 or a 16-byte XOR key consisting of the bytes 0xA0 – 0xAF to obfuscate payloads.
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Drovorub has used XOR encrypted payloads in WebSocket client to server messages.
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Dtrack has used a dropper that embeds an encrypted payload as extra data.
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During C0015, the threat actors used Base64-encoded strings.
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During Frankenstein, the threat actors ran encoded commands from the command line.
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During Night Dragon, threat actors used a DLL that included an XOR-encoded section.
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During Operation CuckooBees, the threat actors executed an encoded VBScript file.
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During Operation Dust Storm, the threat actors encoded some payloads with a single-byte XOR, both skipping the key itself and zeroing in an attempt to avoid exposing the key; other payloads were Base64-encoded.
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During Operation Honeybee, the threat actors used Base64 to encode files with a custom key.
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EKANS uses encoded strings in its process kill list.
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Earth Lusca used Base64 to encode strings.
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Ebury has obfuscated its strings with a simple XOR encryption with a static key.
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Elderwood has encrypted documents and malicious executables.
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Elise encrypts several of its files, including configuration files.
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Ember Bear has obfuscated malware and malicious scripts to help avoid detection.
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Emotet has obfuscated macros within malicious documents to hide the URLs hosting the malware, CMD.exe arguments, and PowerShell scripts.
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EnvyScout can Base64 encode payloads.
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Exaramel for Linux uses RC4 for encrypting the configuration.
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Exaramel uses RC4 for encrypting the configuration.
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FELIXROOT encrypts strings in the backdoor using a custom XOR algorithm.
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FIN6 has used encoded PowerShell commands.
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FIN7 has used fragmented strings, environment variables, standard input (stdin), and native character-replacement functionalities to obfuscate commands.
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FIN8 has used environment variables and standard input (stdin) to obfuscate command-line arguments. FIN8 also obfuscates malicious macros delivered as payloads.
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FatDuke can use base64 encoding, string stacking, and opaque predicates for obfuscation.
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Flagpro has been delivered within ZIP or RAR password-protected archived files.
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FlawedGrace encrypts its C2 configuration files with AES in CBC mode.
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FoggyWeb has been XOR-encoded.
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For Operation Spalax, the threat actors used XOR-encrypted payloads.
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Frankenstein has run encoded commands from the command line.
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FruitFly executes and stores obfuscated Perl scripts.
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GALLIUM used a modified version of HTRAN in which they obfuscated strings such as debug messages in an apparent attempt to evade detection.
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GOLD SOUTHFIELD has executed base64 encoded PowerShell scripts on compromised hosts.
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Gallmaker obfuscated shellcode used during execution.
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Gamaredon Group has delivered self-extracting 7z archive files within malicious document attachments, and used obfuscated or encrypted scripts.
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Gazer logs its actions into files that are encrypted with 3DES. It also uses RSA to encrypt resources.
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Gelsemium has the ability to compress its components.
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GoldMax has written AES-encrypted and Base64-encoded configuration files to disk.
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GoldenSpy's uninstaller has base64-encoded its variables.
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Goopy's decrypter have been inflated with junk code in between legitimate API functions, and also included infinite loops to avoid analysis.
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GravityRAT supports file encryption (AES with the key "lolomycin2017").
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Green Lambert has encrypted strings.
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GreyEnergy encrypts its configuration files with AES-256 and also encrypts its strings.
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GrimAgent has used Rotate on Right (RoR) and Rotate on Left (RoL) functionality to encrypt strings.
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Group5 disguised its malicious binaries with several layers of obfuscation, including encrypting the files.
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H1N1 uses multiple techniques to obfuscate strings, including XOR.
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HAWKBALL has encrypted the payload with an XOR-based algorithm.
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HTTPBrowser's code may be obfuscated through structured exception handling and return-oriented programming.
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HermeticWiper can compress 32-bit and 64-bit driver files with the Lempel-Ziv algorithm.
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HermeticWizard has the ability to encrypt PE files with a reverse XOR loop.
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Hi-Zor uses various XOR techniques to obfuscate its components.
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HiddenWasp encrypts its configuration and payload.
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Higaisa used Base64 encoded compressed payloads.
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Hildegard has encrypted an ELF file.
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HotCroissant has encrypted strings with single-byte XOR and base64 encoded RC4.
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ISMInjector is obfuscated with the off-the-shelf SmartAssembly .NET obfuscator created by red-gate.com.
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IceApple can use Base64 and "junk" JavaScript code to obfuscate information.
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If the victim is using PowerShell 3.0 or later, POWERSOURCE writes its decoded payload to an Alternate Data Stream (ADS) named kernel32.dll that is saved in "%PROGRAMDATA%\Windows\".
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Imminent Monitor has encrypted the spearphish attachments to avoid detection from email gateways; the debugger also encrypts information before sending to the C2.
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