General

  • Target

    d12fc581fb473cb6b22b253f4a26f3780063970442a18cd27a299c750ad6e221N

  • Size

    2.0MB

  • Sample

    241017-cdarbswemd

  • MD5

    a3306a8ffe614d6c05c81226e66bd7e0

  • SHA1

    8c9d52d17df3b2556d4b4f15a191851a15afe188

  • SHA256

    d12fc581fb473cb6b22b253f4a26f3780063970442a18cd27a299c750ad6e221

  • SHA512

    80cbbfd7b1eb0ff09da0250a93576df301064eedad21e95074b3eb1ec0a6b968277bf93c300183844df1c873cd308e93090683261b6b443e8f0c2eb5e63cd128

  • SSDEEP

    24576:gD39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPj8/j7otSm/EVjlM:gp7E+QrFUBgq2pqM

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

      d12fc581fb473cb6b22b253f4a26f3780063970442a18cd27a299c750ad6e221N

    • Size

      2.0MB

    • MD5

      a3306a8ffe614d6c05c81226e66bd7e0

    • SHA1

      8c9d52d17df3b2556d4b4f15a191851a15afe188

    • SHA256

      d12fc581fb473cb6b22b253f4a26f3780063970442a18cd27a299c750ad6e221

    • SHA512

      80cbbfd7b1eb0ff09da0250a93576df301064eedad21e95074b3eb1ec0a6b968277bf93c300183844df1c873cd308e93090683261b6b443e8f0c2eb5e63cd128

    • SSDEEP

      24576:gD39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPj8/j7otSm/EVjlM:gp7E+QrFUBgq2pqM

    • 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