General
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Target
DCrat.exe
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Size
3.7MB
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Sample
240719-nh4qrasald
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MD5
22cc90f49c151e2b37d98947d4fc7390
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SHA1
2838b3e4d3d67bd9af50535130c017f3f0e03e61
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SHA256
1177a24b2539e173f4f9d25c0f3e43a22d23ec64b562a86b4b7ef65741734067
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SHA512
12eae0f34661ed05742cd183dc4225949004a60d59487d9771b6789482a71821560b3ffd1c81cdb4d5cd2e289f3843b91bfdb65379810b4200c03778c9e44b22
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SSDEEP
98304:Ubtsvkrdch4OslTJ64XIQB3MjkbFw6kzGYn:UJs8rCrsp44XIq3qztn
Behavioral task
behavioral1
Sample
DCrat.exe
Resource
win7-20240704-en
Behavioral task
behavioral2
Sample
DCrat.exe
Resource
win10v2004-20240709-en
Malware Config
Targets
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Target
DCrat.exe
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Size
3.7MB
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MD5
22cc90f49c151e2b37d98947d4fc7390
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SHA1
2838b3e4d3d67bd9af50535130c017f3f0e03e61
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SHA256
1177a24b2539e173f4f9d25c0f3e43a22d23ec64b562a86b4b7ef65741734067
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SHA512
12eae0f34661ed05742cd183dc4225949004a60d59487d9771b6789482a71821560b3ffd1c81cdb4d5cd2e289f3843b91bfdb65379810b4200c03778c9e44b22
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SSDEEP
98304:Ubtsvkrdch4OslTJ64XIQB3MjkbFw6kzGYn:UJs8rCrsp44XIq3qztn
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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Disables Task Manager via registry modification
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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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Loads dropped DLL
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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
1Scheduled Task
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
1Scheduled Task
1