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General
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Target
https://github.com/MalwareStudio/CLUTT6.6.6---BY-CYBER-SOLDIER
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Sample
250327-vmmflaxmx4
Static task
static1
URLScan task
urlscan1
Behavioral task
behavioral1
Sample
https://github.com/MalwareStudio/CLUTT6.6.6---BY-CYBER-SOLDIER
Resource
win10ltsc2021-20250314-en
33 signatures
900 seconds
Malware Config
Targets
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Target
https://github.com/MalwareStudio/CLUTT6.6.6---BY-CYBER-SOLDIER
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Modifies WinLogon for persistence
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Disables RegEdit via registry modification
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Disables Task Manager via registry modification
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Possible privilege escalation attempt
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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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Modifies file permissions
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Writes to the Master Boot Record (MBR)
Bootkits write to the MBR to gain persistence at a level below the operating system.
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Drops file in System32 directory
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MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Winlogon Helper DLL
1Pre-OS Boot
1Bootkit
1Defense Evasion
File and Directory Permissions Modification
1Modify Registry
1Pre-OS Boot
1Bootkit
1