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will O
create O
a O
file O
called O
upload.bat B-SamFile
which O
contains O
commands O
to O
be O
executed O
on O
the O
compromised O
computer O
. O
We O
observed O
the O
admin@338 B-HackOrg
upload O
a O
second O
stage O
malware O
, O
known O
as O
BUBBLEWRAP B-Tool
( O
also O
known O
as O
Backdoor.APT.FakeWinHTTPHelper B-Tool
) O
to O
their O
Dropbox O
account O
along O
with O
the O
following O
command O
. O
We O
have O
previously O
observed O
the O
admin@338 B-HackOrg
group I-HackOrg
use O
BUBBLEWRAP B-Tool
. O
The O
LOWBALL B-Tool
first O
stage O
malware O
allows O
the O
group B-HackOrg
to O
collect B-Features
information I-Features
from O
victims O
and O
then O
deliver O
the O
BUBBLEWRAP B-Tool
second O
stage O
malware O
to O
their O
victims O
after O
verifying O
that O
they O
are O
indeed O
interesting O
targets O
. O
The O
admin@338 B-HackOrg
linked O
to O
China B-Area
and O
alleged O