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General

  • Target

    JaffaCakes118_71c5c3921891aa17a545b12b9081b3ff

  • Size

    504KB

  • Sample

    250313-xlq4hazwez

  • MD5

    71c5c3921891aa17a545b12b9081b3ff

  • SHA1

    1a059895434dc4a8e40d19d8411b1432dbdb2060

  • SHA256

    a0765d2800c0ad0ee6dff1f252f63e26ccf759739c48d2c008c67b1be106a8b3

  • SHA512

    cb53f8644fbfa8d6dc5b587c87a21c2b4de9fcfe798e7bc95c862247da39087a1c8cdc60795dbada03762963ed922790a4140128ae949c1b168bb9180d12f12a

  • SSDEEP

    12288:G0Qr0Mk7z+4KMVzDfrTRYQ3+WltCiHE4vTB3cw7m:GBkxFDf/RkWjJvTOB

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

77.120.29.157:1604

Mutex

DC_MUTEX-87KSHV4

Attributes
  • InstallPath

    Windupdt\winupdate.exe

  • gencode

    Esk4h+sMz6Qm

  • install

    true

  • offline_keylogger

    false

  • persistence

    false

  • reg_key

    winupdater

rc4.plain

Targets

    • Target

      JaffaCakes118_71c5c3921891aa17a545b12b9081b3ff

    • Size

      504KB

    • MD5

      71c5c3921891aa17a545b12b9081b3ff

    • SHA1

      1a059895434dc4a8e40d19d8411b1432dbdb2060

    • SHA256

      a0765d2800c0ad0ee6dff1f252f63e26ccf759739c48d2c008c67b1be106a8b3

    • SHA512

      cb53f8644fbfa8d6dc5b587c87a21c2b4de9fcfe798e7bc95c862247da39087a1c8cdc60795dbada03762963ed922790a4140128ae949c1b168bb9180d12f12a

    • SSDEEP

      12288:G0Qr0Mk7z+4KMVzDfrTRYQ3+WltCiHE4vTB3cw7m:GBkxFDf/RkWjJvTOB

    • Darkcomet

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

    • Darkcomet family

    • Modifies WinLogon for persistence

    • 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

    • Loads dropped DLL

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

MITRE ATT&CK Enterprise v15

Tasks