General
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Target
31970365cad3425aa523a7815d695f3c.exe
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Size
1.2MB
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Sample
241103-ns76xstalg
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MD5
31970365cad3425aa523a7815d695f3c
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SHA1
1c6196284ec2666000bda7c091cda224fad77473
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SHA256
0c0b4ee3d14fa4db0bc8268ed908480dd3b977fa3c98bcb930a52fc2839d35b4
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SHA512
7e95cf8c6ac59ab53c8cdaca6fab41ff7c968afa692f88b2bb90966db9eb1682ac969043d1fea6db876b7df3665dfc522b736257db798e574b2344626c0bde49
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SSDEEP
24576:LJlmUJyTmqFOGfeRIvZ6+adOSMZgrWoIaWrcX:evU+a/rSro
Behavioral task
behavioral1
Sample
31970365cad3425aa523a7815d695f3c.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
31970365cad3425aa523a7815d695f3c.exe
Resource
win10v2004-20241007-en
Malware Config
Targets
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Target
31970365cad3425aa523a7815d695f3c.exe
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Size
1.2MB
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MD5
31970365cad3425aa523a7815d695f3c
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SHA1
1c6196284ec2666000bda7c091cda224fad77473
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SHA256
0c0b4ee3d14fa4db0bc8268ed908480dd3b977fa3c98bcb930a52fc2839d35b4
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SHA512
7e95cf8c6ac59ab53c8cdaca6fab41ff7c968afa692f88b2bb90966db9eb1682ac969043d1fea6db876b7df3665dfc522b736257db798e574b2344626c0bde49
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SSDEEP
24576:LJlmUJyTmqFOGfeRIvZ6+adOSMZgrWoIaWrcX:evU+a/rSro
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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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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
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