General

  • Target

    5d5c3406df63fbbede8649a9aa852a478f50a053f8bac3ef77a3b22005eab252

  • Size

    2.1MB

  • Sample

    241021-2bpj5szfmf

  • MD5

    d5deb4430657cb1eed927207e4207893

  • SHA1

    09038352b2ab05aee60a23b688fe7d4142a665f3

  • SHA256

    5d5c3406df63fbbede8649a9aa852a478f50a053f8bac3ef77a3b22005eab252

  • SHA512

    b26153e47d96d44325292d8890429100871bc9f57d03a19b4a78244caedf4112ef9a830bacd2e0cbda87ed060a86244b81bd2dd00beeaef0613ccc006bd43dcd

  • SSDEEP

    24576:DD39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPj8/j73AneL73Yv7:Dp7E+QrFUBgq2g3E7

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

      5d5c3406df63fbbede8649a9aa852a478f50a053f8bac3ef77a3b22005eab252

    • Size

      2.1MB

    • MD5

      d5deb4430657cb1eed927207e4207893

    • SHA1

      09038352b2ab05aee60a23b688fe7d4142a665f3

    • SHA256

      5d5c3406df63fbbede8649a9aa852a478f50a053f8bac3ef77a3b22005eab252

    • SHA512

      b26153e47d96d44325292d8890429100871bc9f57d03a19b4a78244caedf4112ef9a830bacd2e0cbda87ed060a86244b81bd2dd00beeaef0613ccc006bd43dcd

    • SSDEEP

      24576:DD39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPj8/j73AneL73Yv7:Dp7E+QrFUBgq2g3E7

    • 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