General

  • Target
    DRIavHGrez
  • Size 258B
  • Sample260703-aewdbadt7l
  • SHA256 1df120427de50e03f5f21b4f7184bde4ca91ca38d06915967b23e3820dad926c
  • MD5 SHA1 SHA512 TLSH

Malware Config

Extracted

Family
  • darkcomet

Botnet
  • Guest16

C2
  • sussysdfffdfff343.duckdns.org:1604

Mutex
  • DC_MUTEX-QH9A6P4

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    YBnxcFaotAui

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    JavaUpdater

rc4.plain

Targets

    • Target
      DRIavHGrez
    • Size 258B
    • SHA256 1df120427de50e03f5f21b4f7184bde4ca91ca38d06915967b23e3820dad926c
    • MD5 SHA1 SHA512 TLSH
    • Family: Darkcomet

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

    • Modifies WinLogon for persistence

    • Modifies firewall policy service

    • Modifies security service

    • Windows security bypass

    • Disables RegEdit via registry modification

    • Drops file in Drivers directory

    • Modifies Windows Firewall

    • Sets file to hidden

      Modifies file attributes to stop it showing in Explorer etc.

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Creates new service(s)

    • Drops startup file

    • Event Triggered Execution: Component Object Model Hijacking

      Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Windows security modification

    • Adds Run key to start application

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Checks whether UAC is enabled

    • Drops desktop.ini file(s)

    • Enumerates connected drives

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

    • Modifies WinLogon

    • Network Share Discovery

      Attempt to gather information on host network.

    • Drops autorun.inf file

      Malware can abuse Windows Autorun to spread further via attached volumes.

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v16

Tasks