General

  • Target

    MHsdclJwVvtwjza.exe

  • Size

    978KB

  • Sample

    240829-r26k8syflm

  • MD5

    871ca065a899e7ef61372f0ad57aba15

  • SHA1

    05431bb56378a51f20b32a58a347eca010e91895

  • SHA256

    75606480411880eeb9d14c377db8be1f2c73a8a4a88732b18a0119c9481ddacd

  • SHA512

    45e0a72e7d8193cb839c71de1f2f9357babe10f084697edc90d673cdbdab52e1e4d9afa8e52e154999cfde1e588c1f86164d0d6ea9e68d74362c536c072c94af

  • SSDEEP

    24576:/iFdlLzNJWGd3o2rg7otbun1iNMeT8Rmzaip7BMD8Qr:aFXuGdxrg7oti1iNMeT8kmD8Qr

Malware Config

Extracted

Family

remcos

Botnet

BCV

C2

tvq3101.sytes.net:1974

Attributes
  • audio_folder

    MicRecords

  • 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

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-9PFUGS

  • 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

      MHsdclJwVvtwjza.exe

    • Size

      978KB

    • MD5

      871ca065a899e7ef61372f0ad57aba15

    • SHA1

      05431bb56378a51f20b32a58a347eca010e91895

    • SHA256

      75606480411880eeb9d14c377db8be1f2c73a8a4a88732b18a0119c9481ddacd

    • SHA512

      45e0a72e7d8193cb839c71de1f2f9357babe10f084697edc90d673cdbdab52e1e4d9afa8e52e154999cfde1e588c1f86164d0d6ea9e68d74362c536c072c94af

    • SSDEEP

      24576:/iFdlLzNJWGd3o2rg7otbun1iNMeT8Rmzaip7BMD8Qr:aFXuGdxrg7oti1iNMeT8kmD8Qr

    • Remcos

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

    • Credentials from Password Stores: Credentials from Web Browsers

      Malicious Access or copy of Web Browser Credential store.

    • 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

    • 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.

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Accesses Microsoft Outlook accounts

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks