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General

  • Target

    b40deefc4ca51f2995419de278a49f77ff9979b51088bc393ae1fcebc5abfef5

  • Size

    1.9MB

  • Sample

    250324-ywa1psylv6

  • MD5

    0da0e77164c09ad3dba1c49ee7440154

  • SHA1

    61f2f7c5eaf0959c51622ebf89ea5e07e5d12f90

  • SHA256

    b40deefc4ca51f2995419de278a49f77ff9979b51088bc393ae1fcebc5abfef5

  • SHA512

    98e275667d9184cbeeb556df709bcda97f484d278ba8a6421c87a0b71b079a282e67b9c3fca01a339cf261d4d26996863581e6dc537b61a6711e923812623ff3

  • SSDEEP

    24576:vD39dlfGQrFUspugRNJI2DJnUw9W/j+BeKJWqwH6z:vF+QrFUBgq25eKu6z

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

      b40deefc4ca51f2995419de278a49f77ff9979b51088bc393ae1fcebc5abfef5

    • Size

      1.9MB

    • MD5

      0da0e77164c09ad3dba1c49ee7440154

    • SHA1

      61f2f7c5eaf0959c51622ebf89ea5e07e5d12f90

    • SHA256

      b40deefc4ca51f2995419de278a49f77ff9979b51088bc393ae1fcebc5abfef5

    • SHA512

      98e275667d9184cbeeb556df709bcda97f484d278ba8a6421c87a0b71b079a282e67b9c3fca01a339cf261d4d26996863581e6dc537b61a6711e923812623ff3

    • SSDEEP

      24576:vD39dlfGQrFUspugRNJI2DJnUw9W/j+BeKJWqwH6z:vF+QrFUBgq25eKu6z

    • Remcos

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

    • Remcos family

    • 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