Resubmissions

28/03/2025, 07:47

250328-jm2pqsvp15 10

28/03/2025, 07:40

250328-jhpjlstshv 10

28/03/2025, 07:33

250328-jdsqgatscz 10

General

  • Target

    https://learn.microsoft.com/en-us/sysinternals/downloads/process-explorer

  • Sample

    250328-jhpjlstshv

Malware Config

Extracted

Family

darkcomet

Botnet

Guest1111

C2

193.242.166.48:1605

Mutex

DC_MUTEX-2QRLPN3

Attributes
  • InstallPath

    Windupdt\winupdate.exe

  • gencode

    Rb5l52XcV9no

  • install

    true

  • offline_keylogger

    false

  • password

    313131

  • persistence

    true

  • reg_key

    winupdater

rc4.plain

Targets

    • Target

      https://learn.microsoft.com/en-us/sysinternals/downloads/process-explorer

    • Darkcomet

      DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.

    • Darkcomet family

    • Modifies WinLogon for persistence

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Sets file to hidden

      Modifies file attributes to stop it showing in Explorer etc.

    • Sets service image path in registry

    • 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

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Legitimate hosting services abused for malware hosting/C2

    • Drops file in System32 directory

    • Suspicious use of NtCreateThreadExHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks