General

  • Target

    49f04d381800566903c6ae06e20482e4ef7e0b127c112389af5a3717325e7cd7

  • Size

    1.9MB

  • Sample

    250330-ywf7qawscx

  • MD5

    24ccfe6f230a958a95303e9192616fd8

  • SHA1

    17268748c689d54969ee4d1b643c84fc1f5efd50

  • SHA256

    49f04d381800566903c6ae06e20482e4ef7e0b127c112389af5a3717325e7cd7

  • SHA512

    c8d3b4cc7cac9b20d2cd998542c4a69c83ccfea989db4f2c0cec9e503c8d2cfb5ba79b6116a26044e07817769d5d1be03a593d9fb9d85f48271ca67851710171

  • SSDEEP

    24576:7D39dlfGQrFUspugRNJI2DJnUw9W/j+BeKJWqwH6jI:7F+QrFUBgq25eKu6jI

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

      49f04d381800566903c6ae06e20482e4ef7e0b127c112389af5a3717325e7cd7

    • Size

      1.9MB

    • MD5

      24ccfe6f230a958a95303e9192616fd8

    • SHA1

      17268748c689d54969ee4d1b643c84fc1f5efd50

    • SHA256

      49f04d381800566903c6ae06e20482e4ef7e0b127c112389af5a3717325e7cd7

    • SHA512

      c8d3b4cc7cac9b20d2cd998542c4a69c83ccfea989db4f2c0cec9e503c8d2cfb5ba79b6116a26044e07817769d5d1be03a593d9fb9d85f48271ca67851710171

    • SSDEEP

      24576:7D39dlfGQrFUspugRNJI2DJnUw9W/j+BeKJWqwH6jI:7F+QrFUBgq25eKu6jI

    • 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