General

  • Target

    c541ef92d5024981da22c4cd0a7884be_JaffaCakes118

  • Size

    776KB

  • Sample

    241205-bx3e1sxlan

  • MD5

    c541ef92d5024981da22c4cd0a7884be

  • SHA1

    554c2af624c1d1f36d522bbdad0860cc05e4fb31

  • SHA256

    0aef5fd40527e7ab78039802a026b1268a330c6580eb1b5bb11ae29137de3d2c

  • SHA512

    89059237ff2d332016b9ed49946b31042be61a349b53a4a415e18ab67976d3c12ecfdd9b6311162b56d6d82dd8807cdda4bf43e3fff263af60cb8cb4343eab8f

  • SSDEEP

    12288:8XV1Vt7syT8RJJ58bOZmZHGGPVo5yOnperQvBXtvldA93LYzxOd6:8nVtYyKp2zPPOpXvBXtvlg0Ad6

Malware Config

Extracted

Family

remcos

Version

3.1.4 Pro

Botnet

RemoteHost-5778

C2

5778.hopto.org:5778

Attributes
  • audio_folder

    MicRecords

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • copy_folder

    Remcos

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    false

  • install_path

    %AppData%

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    Remcos-8NVW4R

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    Remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

  • take_screenshot_title

    notepad;solitaire;

Targets

    • Target

      c541ef92d5024981da22c4cd0a7884be_JaffaCakes118

    • Size

      776KB

    • MD5

      c541ef92d5024981da22c4cd0a7884be

    • SHA1

      554c2af624c1d1f36d522bbdad0860cc05e4fb31

    • SHA256

      0aef5fd40527e7ab78039802a026b1268a330c6580eb1b5bb11ae29137de3d2c

    • SHA512

      89059237ff2d332016b9ed49946b31042be61a349b53a4a415e18ab67976d3c12ecfdd9b6311162b56d6d82dd8807cdda4bf43e3fff263af60cb8cb4343eab8f

    • SSDEEP

      12288:8XV1Vt7syT8RJJ58bOZmZHGGPVo5yOnperQvBXtvldA93LYzxOd6:8nVtYyKp2zPPOpXvBXtvlg0Ad6

    • Remcos

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

    • Remcos family

    • Windows security bypass

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Windows security modification

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks