General
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Target
6a639fdba14515cf938af997b4c0bd2093b1e099bed8eb4d7950ea5d18e13e58.exe
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Size
2.0MB
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Sample
241114-f43rksvfqq
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MD5
43a09f586ae8fe86191c47743b5cf744
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SHA1
a8bc2177c871d0d29e93737a7ebcaa3da8f182de
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SHA256
6a639fdba14515cf938af997b4c0bd2093b1e099bed8eb4d7950ea5d18e13e58
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SHA512
ff8acde081b435a1bb0f204359bd7227b380a66e61472546016db41c53c7708c91215af8fbc3fdc8a99d1e15f6139c3e278b04dc483ecc3d952a2d1240efa104
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SSDEEP
49152:+bv4/KHiciethGCUA1TJeUCMkiOT3eY1CKzuJtGvAAzB:+bv4/BUVb5JLChiAu1evAoB
Static task
static1
Behavioral task
behavioral1
Sample
6a639fdba14515cf938af997b4c0bd2093b1e099bed8eb4d7950ea5d18e13e58.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
6a639fdba14515cf938af997b4c0bd2093b1e099bed8eb4d7950ea5d18e13e58.exe
Resource
win10v2004-20241007-en
Malware Config
Targets
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Target
6a639fdba14515cf938af997b4c0bd2093b1e099bed8eb4d7950ea5d18e13e58.exe
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Size
2.0MB
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MD5
43a09f586ae8fe86191c47743b5cf744
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SHA1
a8bc2177c871d0d29e93737a7ebcaa3da8f182de
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SHA256
6a639fdba14515cf938af997b4c0bd2093b1e099bed8eb4d7950ea5d18e13e58
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SHA512
ff8acde081b435a1bb0f204359bd7227b380a66e61472546016db41c53c7708c91215af8fbc3fdc8a99d1e15f6139c3e278b04dc483ecc3d952a2d1240efa104
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SSDEEP
49152:+bv4/KHiciethGCUA1TJeUCMkiOT3eY1CKzuJtGvAAzB:+bv4/BUVb5JLChiAu1evAoB
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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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Dcrat family
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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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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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Looks up external IP address via web service
Uses a legitimate IP lookup service to find the infected system's external IP.
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Drops file in System32 directory
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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
1Privilege Escalation
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Scheduled Task/Job
1Scheduled Task
1Defense Evasion
Modify Registry
3Subvert Trust Controls
1Install Root Certificate
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1