General

  • Target

    77a85c6ea9e0e2ddc1a7fbd25174fde67e8a9e14262c998f3c06f069411d8580N

  • Size

    2.1MB

  • Sample

    241012-tyxv2azcnf

  • MD5

    b0a24b34468b90ebcf455b54126c1930

  • SHA1

    6a156c198e91ec526bf78136c2c2b8e9cb095516

  • SHA256

    77a85c6ea9e0e2ddc1a7fbd25174fde67e8a9e14262c998f3c06f069411d8580

  • SHA512

    10f556b905252dcf694e35fc0396940fb847492dfd2d0ba16f5f7fd3ec8e7c0b41d1e520083b28045d949a871a8fd04193e6b9205a319ecca244dc447c839c67

  • SSDEEP

    24576:KD39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPj8/j73Anet9/wi:Kp7E+QrFUBgq26

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

      77a85c6ea9e0e2ddc1a7fbd25174fde67e8a9e14262c998f3c06f069411d8580N

    • Size

      2.1MB

    • MD5

      b0a24b34468b90ebcf455b54126c1930

    • SHA1

      6a156c198e91ec526bf78136c2c2b8e9cb095516

    • SHA256

      77a85c6ea9e0e2ddc1a7fbd25174fde67e8a9e14262c998f3c06f069411d8580

    • SHA512

      10f556b905252dcf694e35fc0396940fb847492dfd2d0ba16f5f7fd3ec8e7c0b41d1e520083b28045d949a871a8fd04193e6b9205a319ecca244dc447c839c67

    • SSDEEP

      24576:KD39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPj8/j73Anet9/wi:Kp7E+QrFUBgq26

    • 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