General

  • Target

    84625d91e89bac26466c40fae7df1a9376d6ee116c4bc05f932b551b89c5ed7a

  • Size

    1.9MB

  • Sample

    250330-y1m6tsykw3

  • MD5

    8b60316e58248c988cf1580b1a5952ff

  • SHA1

    3f98815828e12b0d814cc897f86fdc468a34cec9

  • SHA256

    84625d91e89bac26466c40fae7df1a9376d6ee116c4bc05f932b551b89c5ed7a

  • SHA512

    475578e8b5ac0a41dbb7aec8adbde636925cb4bc136fcfa36c5301dcfde7982d0b782b6a49cb97ef7f26dd56ace3ccecf9f13d904faefc7c3b2336cca4a159e6

  • SSDEEP

    24576:9D39dlfGQrFUspugRNJI2DJnUw9W/j+BeKJWqwH6jy:9F+QrFUBgq25eKu6jy

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

Host

C2

213.183.58.19:4000

Attributes
  • audio_folder

    audio

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    5

  • copy_file

    remcos.exe

  • copy_folder

    remcos

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    true

  • install_flag

    false

  • install_path

    %AppData%

  • keylog_crypt

    true

  • keylog_file

    read.dat

  • keylog_flag

    false

  • keylog_folder

    CastC

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    remcos_sccafsoidz

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screens

  • screenshot_path

    %AppData%

  • screenshot_time

    1

  • startup_value

    remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target

      84625d91e89bac26466c40fae7df1a9376d6ee116c4bc05f932b551b89c5ed7a

    • Size

      1.9MB

    • MD5

      8b60316e58248c988cf1580b1a5952ff

    • SHA1

      3f98815828e12b0d814cc897f86fdc468a34cec9

    • SHA256

      84625d91e89bac26466c40fae7df1a9376d6ee116c4bc05f932b551b89c5ed7a

    • SHA512

      475578e8b5ac0a41dbb7aec8adbde636925cb4bc136fcfa36c5301dcfde7982d0b782b6a49cb97ef7f26dd56ace3ccecf9f13d904faefc7c3b2336cca4a159e6

    • SSDEEP

      24576:9D39dlfGQrFUspugRNJI2DJnUw9W/j+BeKJWqwH6jy:9F+QrFUBgq25eKu6jy

    • Remcos

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

    • Remcos family

    • Boot or Logon Autostart Execution: Active Setup

      Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    • Checks computer location settings

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

    • 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.

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks