General

  • Target

    05112024_0859_2024-11-05-5910184618-5910184618-fs�pdf.vbs.zip

  • Size

    8KB

  • Sample

    241105-kxqwnayglp

  • MD5

    91c5cd43d9a454641245dad9ce2147a8

  • SHA1

    cfbd9656991ed842de30e665668ccbbb02dfe5b6

  • SHA256

    b85e67bed677fa278dde9580629cf4680c9d135c2a6392302059d74db3acbf21

  • SHA512

    c4e3fd0ec3f3f7caeab79a507ece02e0f78facc60187bae0f591a9f8a5d8d60851678e04156480ae78a6141eb517878e9996c0b3b31687100ca86da49f31127f

  • SSDEEP

    192:hW1v+pLLqdWbxaaPQM5dqUGbYE7cRW9haM8VX4pynAutDath:qvwLIWb4aPQodqUtCaMSX4pas

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

a458386d9.duckdns.org:3256

Attributes
  • audio_folder

    MicRecords

  • audio_path

    ApplicationPath

  • 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

  • keylog_crypt

    true

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-4EN793

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target

      2024-11-05-5910184618-5910184618-fs·pdf.vbs

    • Size

      15KB

    • MD5

      5ad52d64a21f10ad755ec87891cb0ee4

    • SHA1

      1ddc7de7db46b2a959d2725a82303eeffe6caa16

    • SHA256

      88697793e59cba6174bc6fe0418855032b73c8aa8f37aa522f75b12b60294cb6

    • SHA512

      84eedc76b14fa268adc52cb751a15b673660af8378dd62bbe2b8ef9e1f96416e489b09420822423ab506034c86dd71bde664cfe1a61823f2b858ee58eb4081c8

    • SSDEEP

      384:tb396jHpB+hxGJwWJWkyRZxZJQvPkFtGSqUsvVNccDqa:tNgIAJ/8nvxLQXszaV9Dqa

    • Remcos

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

    • Remcos family

    • UAC bypass

    • Detected Nirsoft tools

      Free utilities often used by attackers which can steal passwords, product keys, etc.

    • NirSoft MailPassView

      Password recovery tool for various email clients

    • NirSoft WebBrowserPassView

      Password recovery tool for various web browsers

    • Blocklisted process makes network request

    • Uses browser remote debugging

      Can be used control the browser and steal sensitive information such as credentials and session cookies.

    • Checks computer location settings

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

    • Accesses Microsoft Outlook accounts

    • Adds Run key to start application

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

    • Legitimate hosting services abused for malware hosting/C2

    • Suspicious use of NtCreateThreadExHideFromDebugger

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks