General

  • Target

    1e41a2abb16c585715bd566a2746b1b25c0b8305619c4c11ce00fdfc3c1d0d6eN

  • Size

    1.2MB

  • Sample

    241022-rbnyhazhpq

  • MD5

    e97fcc0daa8d53e67427a23588e55360

  • SHA1

    4b8c28d9e4445ca6938918c97b57a383afa55b86

  • SHA256

    1e41a2abb16c585715bd566a2746b1b25c0b8305619c4c11ce00fdfc3c1d0d6e

  • SHA512

    83e76f8483ce4681a1d2b7bea5b62604dc3f14f81066d4e520c5ee1a0764e834cd80c73d7a72db8c8717d4180b3eb8d7743c39a3b3989e8de705492912674cdf

  • SSDEEP

    24576:SD39dlfGQrFUspugRNJI2DJnUw9W/j+Be1AM:SF+QrFUBgq25e1AM

Malware Config

Extracted

Family

remcos

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

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

      1e41a2abb16c585715bd566a2746b1b25c0b8305619c4c11ce00fdfc3c1d0d6eN

    • Size

      1.2MB

    • MD5

      e97fcc0daa8d53e67427a23588e55360

    • SHA1

      4b8c28d9e4445ca6938918c97b57a383afa55b86

    • SHA256

      1e41a2abb16c585715bd566a2746b1b25c0b8305619c4c11ce00fdfc3c1d0d6e

    • SHA512

      83e76f8483ce4681a1d2b7bea5b62604dc3f14f81066d4e520c5ee1a0764e834cd80c73d7a72db8c8717d4180b3eb8d7743c39a3b3989e8de705492912674cdf

    • SSDEEP

      24576:SD39dlfGQrFUspugRNJI2DJnUw9W/j+Be1AM:SF+QrFUBgq25e1AM

    • Remcos

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

    • 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