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General

  • Target

    c7f380436083b43aae0be3855e9c1b69775d0a1cd3ba1d737f8ad4e3ed38d41dN

  • Size

    2.2MB

  • Sample

    241005-xsjyrszcjq

  • MD5

    44f2795e1bda2608db6b626bcf462040

  • SHA1

    e78ec0a54adc87d7333eeb602ad8caaf9647b071

  • SHA256

    c7f380436083b43aae0be3855e9c1b69775d0a1cd3ba1d737f8ad4e3ed38d41d

  • SHA512

    cf3dd9c1b0e1dfee5cb0c4cb58c89130c899d27f44bac8b254d267e96712ddf0afa406c271381e3062633707b8d1829a1aa33ba55f5d7ceb4f729b6cc6aec9ea

  • SSDEEP

    24576:HD39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPjYF4avnXJJPwxH38:Hp7E+QrFUBgq2Snq38

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

      c7f380436083b43aae0be3855e9c1b69775d0a1cd3ba1d737f8ad4e3ed38d41dN

    • Size

      2.2MB

    • MD5

      44f2795e1bda2608db6b626bcf462040

    • SHA1

      e78ec0a54adc87d7333eeb602ad8caaf9647b071

    • SHA256

      c7f380436083b43aae0be3855e9c1b69775d0a1cd3ba1d737f8ad4e3ed38d41d

    • SHA512

      cf3dd9c1b0e1dfee5cb0c4cb58c89130c899d27f44bac8b254d267e96712ddf0afa406c271381e3062633707b8d1829a1aa33ba55f5d7ceb4f729b6cc6aec9ea

    • SSDEEP

      24576:HD39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPjYF4avnXJJPwxH38:Hp7E+QrFUBgq2Snq38

    • 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