General

  • Target

    c8dc3da743828ede92e47375261bb9e9c192e307e779e56af8c63e0e9cb919d7.vbs

  • Size

    15KB

  • Sample

    241105-evzswsvajc

  • MD5

    32166cc1965b1dfa389671abcdbf90f3

  • SHA1

    897a0567851433b4c116a7703ba16cd262dafdc5

  • SHA256

    c8dc3da743828ede92e47375261bb9e9c192e307e779e56af8c63e0e9cb919d7

  • SHA512

    4957257bc4724bce2a516d39a576bbc397553fbcb0a80a951c9fb3e1a5294159e53000dc42db7279bef1274c426fb1a21b38f4715a320612481bc443c77a6522

  • SSDEEP

    192:dNbwZ3XUlJPdrDdCR/vXZUr56NxE9yrVvla5Loea+1v+tkqxIXJM8+lbuzCv/K:bb+XyJPdHE61fwVvlaj1v+zI5glblv/K

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

      c8dc3da743828ede92e47375261bb9e9c192e307e779e56af8c63e0e9cb919d7.vbs

    • Size

      15KB

    • MD5

      32166cc1965b1dfa389671abcdbf90f3

    • SHA1

      897a0567851433b4c116a7703ba16cd262dafdc5

    • SHA256

      c8dc3da743828ede92e47375261bb9e9c192e307e779e56af8c63e0e9cb919d7

    • SHA512

      4957257bc4724bce2a516d39a576bbc397553fbcb0a80a951c9fb3e1a5294159e53000dc42db7279bef1274c426fb1a21b38f4715a320612481bc443c77a6522

    • SSDEEP

      192:dNbwZ3XUlJPdrDdCR/vXZUr56NxE9yrVvla5Loea+1v+tkqxIXJM8+lbuzCv/K:bb+XyJPdHE61fwVvlaj1v+zI5glblv/K

    • 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

    • 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