General

  • Target

    4ebb9daf94dffe8a78e21b6434b3f46dee4f7a1233eabcc13f1b48e9be305fb5

  • Size

    2.2MB

  • Sample

    240926-z2sy5sxhkr

  • MD5

    854c20bcb3515b3d18a1d01093688b3b

  • SHA1

    ae43f32f157b5809ae3ce40c90e5fd5448716e52

  • SHA256

    4ebb9daf94dffe8a78e21b6434b3f46dee4f7a1233eabcc13f1b48e9be305fb5

  • SHA512

    fdbad0291f20acab0853e121029d685d0ea627733bf086a97c81c059b8d6bf72363500d29f7de0aaaa6a83dfedf5b9a2ade69163e4427d3e96b7461756c11d5b

  • SSDEEP

    24576:GD39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPjYF4avnXJJJz5/t:Gp7E+QrFUBgq2Sn7/t

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

      4ebb9daf94dffe8a78e21b6434b3f46dee4f7a1233eabcc13f1b48e9be305fb5

    • Size

      2.2MB

    • MD5

      854c20bcb3515b3d18a1d01093688b3b

    • SHA1

      ae43f32f157b5809ae3ce40c90e5fd5448716e52

    • SHA256

      4ebb9daf94dffe8a78e21b6434b3f46dee4f7a1233eabcc13f1b48e9be305fb5

    • SHA512

      fdbad0291f20acab0853e121029d685d0ea627733bf086a97c81c059b8d6bf72363500d29f7de0aaaa6a83dfedf5b9a2ade69163e4427d3e96b7461756c11d5b

    • SSDEEP

      24576:GD39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPjYF4avnXJJJz5/t:Gp7E+QrFUBgq2Sn7/t

    • 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