General

  • Target

    JaffaCakes118_c21799fc876c054de396b11942c735fa

  • Size

    828KB

  • Sample

    250419-kszm1atnt2

  • MD5

    c21799fc876c054de396b11942c735fa

  • SHA1

    f01e99934fe4ca461a5b695517e7c59490025687

  • SHA256

    3df37e035317c8001ce5355b62af3e3351e479ca9ebefe6be9c18470c7b085f6

  • SHA512

    ef1d217a4c84e131af5ac6144668012a2eeba93a012ae258ab2a9bba6a628a5945d20a259221a86ddf2874f9e7928e6a95a9104217678d819cf94abbaef3d926

  • SSDEEP

    12288:4ibLWFh09ebdkr7d8cZud+BR0/g12NxZtw9mUCcm8Qv6tw61kE4w9yoF8X/J:HbLUB5kr7Ju4RGE2Nx1txv6SE4ayo+PJ

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

windowsmicro.serveirc.com:1604

Mutex

DC_MUTEX-M3ERYBD

Attributes
  • InstallPath

    Windupdt\winupdate.exe

  • gencode

    +PqBauwtUyWv

  • install

    true

  • offline_keylogger

    true

  • password

    versager

  • persistence

    true

  • reg_key

    winupdater

rc4.plain

Targets

    • Target

      JaffaCakes118_c21799fc876c054de396b11942c735fa

    • Size

      828KB

    • MD5

      c21799fc876c054de396b11942c735fa

    • SHA1

      f01e99934fe4ca461a5b695517e7c59490025687

    • SHA256

      3df37e035317c8001ce5355b62af3e3351e479ca9ebefe6be9c18470c7b085f6

    • SHA512

      ef1d217a4c84e131af5ac6144668012a2eeba93a012ae258ab2a9bba6a628a5945d20a259221a86ddf2874f9e7928e6a95a9104217678d819cf94abbaef3d926

    • SSDEEP

      12288:4ibLWFh09ebdkr7d8cZud+BR0/g12NxZtw9mUCcm8Qv6tw61kE4w9yoF8X/J:HbLUB5kr7Ju4RGE2Nx1txv6SE4ayo+PJ

    • Darkcomet

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

    • Darkcomet family

    • Modifies WinLogon for persistence

    • Modifies firewall policy service

    • Modifies security service

    • Windows security bypass

    • 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.

    • Executes dropped EXE

    • Windows security modification

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v16

Tasks