General

  • Target

    eeb926f2febcc2bb70d39869f6cf89ec3ffa8c3bc8839a405d5cf116a3500cfe

  • Size

    1.4MB

  • Sample

    241228-ev3jsawmbk

  • MD5

    0aab0aa6b18cc7b75cac96ee3703f49b

  • SHA1

    2a156d69283e7e06cf4f8ca055cf59edbb71a71c

  • SHA256

    eeb926f2febcc2bb70d39869f6cf89ec3ffa8c3bc8839a405d5cf116a3500cfe

  • SHA512

    b885189333556394a34c11a9413950da324edbba342c5bc55c2d879df04c0ef44766da227af16e819ebc1645f41072df35baad918c8e8c0e0f0827d119a0f79d

  • SSDEEP

    24576:ID39dlfGQrFUspugRNJI2DJnUw9W/j+BeKJ3:IF+QrFUBgq25eKl

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

      eeb926f2febcc2bb70d39869f6cf89ec3ffa8c3bc8839a405d5cf116a3500cfe

    • Size

      1.4MB

    • MD5

      0aab0aa6b18cc7b75cac96ee3703f49b

    • SHA1

      2a156d69283e7e06cf4f8ca055cf59edbb71a71c

    • SHA256

      eeb926f2febcc2bb70d39869f6cf89ec3ffa8c3bc8839a405d5cf116a3500cfe

    • SHA512

      b885189333556394a34c11a9413950da324edbba342c5bc55c2d879df04c0ef44766da227af16e819ebc1645f41072df35baad918c8e8c0e0f0827d119a0f79d

    • SSDEEP

      24576:ID39dlfGQrFUspugRNJI2DJnUw9W/j+BeKJ3:IF+QrFUBgq25eKl

    • 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

    • 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