General
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Target
b7a7803345ff48799486bb3d6e45598c956d5217f6d5571ee684f5421198e0cf
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Size
2.7MB
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Sample
240516-c18xmsge8z
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MD5
9508912e063cac5e940efba1f85ce86f
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SHA1
e6d15f29a811c4470f4b7a245207e9f2d1051e62
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SHA256
b7a7803345ff48799486bb3d6e45598c956d5217f6d5571ee684f5421198e0cf
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SHA512
2581361c9c99904ff11beb75208e3689ef310cdb98fd8a0d71a3f0a3d5480f696fc14a5b8e42075d3df79b89bb2623114763ff75820fa454e053f5f72b875f27
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SSDEEP
49152:iH64y2XDuLlIY14o9/yDzr1xJ8XbRrC9mWvR08Yv7yP3GcY:iHfE5Ad8Xd295UmGc
Behavioral task
behavioral1
Sample
b7a7803345ff48799486bb3d6e45598c956d5217f6d5571ee684f5421198e0cf.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
b7a7803345ff48799486bb3d6e45598c956d5217f6d5571ee684f5421198e0cf.exe
Resource
win10v2004-20240426-en
Malware Config
Targets
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Target
b7a7803345ff48799486bb3d6e45598c956d5217f6d5571ee684f5421198e0cf
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Size
2.7MB
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MD5
9508912e063cac5e940efba1f85ce86f
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SHA1
e6d15f29a811c4470f4b7a245207e9f2d1051e62
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SHA256
b7a7803345ff48799486bb3d6e45598c956d5217f6d5571ee684f5421198e0cf
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SHA512
2581361c9c99904ff11beb75208e3689ef310cdb98fd8a0d71a3f0a3d5480f696fc14a5b8e42075d3df79b89bb2623114763ff75820fa454e053f5f72b875f27
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SSDEEP
49152:iH64y2XDuLlIY14o9/yDzr1xJ8XbRrC9mWvR08Yv7yP3GcY:iHfE5Ad8Xd295UmGc
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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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Process spawned unexpected child process
This typically indicates the parent process was compromised via an exploit or macro.
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Detects executables packed with SmartAssembly
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Command and Scripting Interpreter: PowerShell
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Executes dropped EXE
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Adds Run key to start application
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MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Scheduled Task/Job
1Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Scheduled Task/Job
1