General

  • Target

    81f513aa3c6e025bede4da320fd6b62a439b0842f1a3a1d431c5eb8dae6dab0eN

  • Size

    2.1MB

  • Sample

    241031-caynzsxarp

  • MD5

    a09c63aeaef0ae03625de194dcd24580

  • SHA1

    eb35af7b226368b5aa94fd0cef7108b4a4f9cf4f

  • SHA256

    81f513aa3c6e025bede4da320fd6b62a439b0842f1a3a1d431c5eb8dae6dab0e

  • SHA512

    e9a909fae732e802fd7e1b7f9a3f54ea703234093752ad09cc77368170555807e9fb7da669be8cd8ecc5bb6682053e76e396a4141e6d7b2fddc81334a84fc004

  • SSDEEP

    24576:hD39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPj8/j7otSm/EVjlw3v:hp7E+QrFUBgq2pqw3v

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

Targets

    • Target

      81f513aa3c6e025bede4da320fd6b62a439b0842f1a3a1d431c5eb8dae6dab0eN

    • Size

      2.1MB

    • MD5

      a09c63aeaef0ae03625de194dcd24580

    • SHA1

      eb35af7b226368b5aa94fd0cef7108b4a4f9cf4f

    • SHA256

      81f513aa3c6e025bede4da320fd6b62a439b0842f1a3a1d431c5eb8dae6dab0e

    • SHA512

      e9a909fae732e802fd7e1b7f9a3f54ea703234093752ad09cc77368170555807e9fb7da669be8cd8ecc5bb6682053e76e396a4141e6d7b2fddc81334a84fc004

    • SSDEEP

      24576:hD39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPj8/j7otSm/EVjlw3v:hp7E+QrFUBgq2pqw3v

    • 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

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks