General
- Target 18a6abdb4cbcda4ac8cd3dcfeed13ff1506b6355912f6a7f479fdcd4a3f2c919.exe
- Size 1.8MB
- Sample250123-cl26jsxjev
- SHA256 18a6abdb4cbcda4ac8cd3dcfeed13ff1506b6355912f6a7f479fdcd4a3f2c919
Malware Config
Targets
-
- Target 18a6abdb4cbcda4ac8cd3dcfeed13ff1506b6355912f6a7f479fdcd4a3f2c919.exe
- Size 1.8MB
- SHA256 18a6abdb4cbcda4ac8cd3dcfeed13ff1506b6355912f6a7f479fdcd4a3f2c919
Score10/10DcRat
DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.
Dcrat family
Modifies WinLogon for persistence
Process spawned unexpected child process
This typically indicates the parent process was compromised via an exploit or macro.
Command and Scripting Interpreter: PowerShell
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
Checks computer location settings
Looks up country code configured in the registry, likely geofence.
Executes dropped EXE
Reads user/profile data of web browsers
Infostealers often target stored browser data, which can include saved credentials etc.
Adds Run key to start application
Drops file in System32 directory
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
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1