General
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Target
https://learn.microsoft.com/en-us/sysinternals/downloads/process-explorer
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Sample
250328-jhpjlstshv
Static task
static1
URLScan task
urlscan1
Behavioral task
behavioral1
Sample
https://learn.microsoft.com/en-us/sysinternals/downloads/process-explorer
Resource
win10ltsc2021-20250314-en
Malware Config
Extracted
darkcomet
Guest1111
193.242.166.48:1605
DC_MUTEX-2QRLPN3
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InstallPath
Windupdt\winupdate.exe
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gencode
Rb5l52XcV9no
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install
true
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offline_keylogger
false
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password
313131
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persistence
true
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reg_key
winupdater
Targets
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Target
https://learn.microsoft.com/en-us/sysinternals/downloads/process-explorer
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Darkcomet family
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Modifies WinLogon for persistence
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Downloads MZ/PE file
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Drops file in Drivers directory
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Sets service image path in registry
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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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Enumerates connected drives
Attempts to read the root path of hard drives other than the default C: drive.
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Legitimate hosting services abused for malware hosting/C2
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Drops file in System32 directory
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Suspicious use of NtCreateThreadExHideFromDebugger
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MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
3Registry Run Keys / Startup Folder
2Winlogon Helper DLL
1Privilege Escalation
Boot or Logon Autostart Execution
3Registry Run Keys / Startup Folder
2Winlogon Helper DLL
1Defense Evasion
Hide Artifacts
2Hidden Files and Directories
2Modify Registry
4Subvert Trust Controls
1Install Root Certificate
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1