General
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Target
http://135.181.168.27
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Sample
221027-y7pcgadch3
Static task
static1
URLScan task
urlscan1
Behavioral task
behavioral1
Sample
http://135.181.168.27
Resource
win10v2004-20220901-en
windows10-2004-x64
33 signatures
1800 seconds
Malware Config
Targets
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Target
http://135.181.168.27
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DcRat
DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.
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Modifies WinLogon for persistence
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Modifies security service
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Process spawned unexpected child process
This typically indicates the parent process was compromised via an exploit or macro.
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Downloads MZ/PE file
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Executes dropped EXE
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Possible privilege escalation attempt
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Stops running service(s)
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Loads dropped DLL
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Modifies file permissions
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Adds Run key to start application
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Suspicious use of SetThreadContext
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