General

  • Target

    9668a095c38407db1c77847027ae577e_JaffaCakes118

  • Size

    131KB

  • Sample

    241124-wyk8caymcn

  • MD5

    9668a095c38407db1c77847027ae577e

  • SHA1

    6aae64387909a4d50bf06a92ef50b2b40c79ccae

  • SHA256

    8576cd1fa9a4fb395d946793d90eb941f86faddf5332db0cb932d2ffacb36562

  • SHA512

    4d6a5bf9d17f9fb07f6a17c8a1e4b69a8bbf2b030bd4990ebb0efdf7788a7885f8662910555aee19c13275b17c457eaff25debdfaf83c858cfdaaf82f606fd92

  • SSDEEP

    1536:ITHiPBX4nDzMyRXGHrc9YRHqbTypgpmb5Q+ZReSdhk/J+YLgD3mrxb53cSuYQjKD:xPd4n/M+WLcilrpgGH/GwY87mVmIXz

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

Host

C2

systemcontrol.ddns.net:45000

systemcontrol2.ddns.net:45000

Attributes
  • audio_folder

    audio

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    5

  • copy_file

    OfficeUpgrade.exe

  • copy_folder

    OfficeUpgrade

  • delete_file

    false

  • hide_file

    true

  • hide_keylog_file

    true

  • install_flag

    false

  • install_path

    %AppData%

  • keylog_crypt

    true

  • keylog_file

    Upgrader.dat

  • keylog_flag

    false

  • keylog_folder

    Upgrader

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    req_khauflaoyr

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screens

  • screenshot_path

    %AppData%

  • screenshot_time

    1

  • startup_value

    OfficeUpgrade

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target

      9668a095c38407db1c77847027ae577e_JaffaCakes118

    • Size

      131KB

    • MD5

      9668a095c38407db1c77847027ae577e

    • SHA1

      6aae64387909a4d50bf06a92ef50b2b40c79ccae

    • SHA256

      8576cd1fa9a4fb395d946793d90eb941f86faddf5332db0cb932d2ffacb36562

    • SHA512

      4d6a5bf9d17f9fb07f6a17c8a1e4b69a8bbf2b030bd4990ebb0efdf7788a7885f8662910555aee19c13275b17c457eaff25debdfaf83c858cfdaaf82f606fd92

    • SSDEEP

      1536:ITHiPBX4nDzMyRXGHrc9YRHqbTypgpmb5Q+ZReSdhk/J+YLgD3mrxb53cSuYQjKD:xPd4n/M+WLcilrpgGH/GwY87mVmIXz

    • Remcos

      Remcos is a closed-source remote control and surveillance software.

    • Remcos family

    • 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

MITRE ATT&CK Enterprise v15

Tasks