General
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Target
c830d62f6f45993891816dee47dee340N.exe
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Size
1.7MB
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Sample
240721-qa36csteqp
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MD5
c830d62f6f45993891816dee47dee340
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SHA1
4284963ed30b687ccd47a2d69e6809e4290f0c78
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SHA256
2338d4f0154b4295202b61eafb9c5e457112de784325f6fc38a587be668024e3
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SHA512
d7870eca65c6b6b25b3f7dd788414afd64c075db9bdd1d8b099e932ab571449fe20126d5bde0bd3aaebd2c10ac4160c6ffee1899d8b2b37874f0a996af886fdc
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SSDEEP
24576:mwtlgjpoyMl1W9Rl/3XF9R95g9f53Lv+6gJUHGHhuf9QkGuW+4HcWb1JB4nS:BtyotW9RN+f53i1JUHG4xGuDkcY1JB
Behavioral task
behavioral1
Sample
c830d62f6f45993891816dee47dee340N.exe
Resource
win7-20240708-en
Behavioral task
behavioral2
Sample
c830d62f6f45993891816dee47dee340N.exe
Resource
win10v2004-20240709-en
Malware Config
Targets
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Target
c830d62f6f45993891816dee47dee340N.exe
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Size
1.7MB
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MD5
c830d62f6f45993891816dee47dee340
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SHA1
4284963ed30b687ccd47a2d69e6809e4290f0c78
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SHA256
2338d4f0154b4295202b61eafb9c5e457112de784325f6fc38a587be668024e3
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SHA512
d7870eca65c6b6b25b3f7dd788414afd64c075db9bdd1d8b099e932ab571449fe20126d5bde0bd3aaebd2c10ac4160c6ffee1899d8b2b37874f0a996af886fdc
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SSDEEP
24576:mwtlgjpoyMl1W9Rl/3XF9R95g9f53Lv+6gJUHGHhuf9QkGuW+4HcWb1JB4nS:BtyotW9RN+f53i1JUHG4xGuDkcY1JB
Score10/10-
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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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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Drops file in Drivers directory
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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
Execution
Command and Scripting Interpreter
1PowerShell
1Scheduled Task/Job
1Scheduled Task
1Persistence
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Scheduled Task/Job
1Scheduled Task
1