General

  • Target

    b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe

  • Size

    991KB

  • Sample

    240904-r9ywcssdrr

  • MD5

    4839930b3f7915602fd40251b76bb9c5

  • SHA1

    fe3a9de406d44c6a9aa5a6ad1fede58f6a0e413f

  • SHA256

    b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e

  • SHA512

    54b4b3ba92406fb1417eda6366cc4806f10dfae1233cb009c697a8b95f990bd497a7e50140f48406566e16dedf0a62a0f71f25d862d1113a92d6277cacf5016f

  • SSDEEP

    12288:vdZshZWHXnhEE8tpUEx1I94L+R49xIUBZjlP4JH0Y6QC4zmEs0mwF0WOs5HvrWZO:vzshZEXw7jIS6RuXGUDQFDMEKW4THM00

Malware Config

Extracted

Family

remcos

Botnet

Aug 23C

C2

method8888.ddns.net:6902

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-RCNGU6

  • 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

      b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe

    • Size

      991KB

    • MD5

      4839930b3f7915602fd40251b76bb9c5

    • SHA1

      fe3a9de406d44c6a9aa5a6ad1fede58f6a0e413f

    • SHA256

      b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e

    • SHA512

      54b4b3ba92406fb1417eda6366cc4806f10dfae1233cb009c697a8b95f990bd497a7e50140f48406566e16dedf0a62a0f71f25d862d1113a92d6277cacf5016f

    • SSDEEP

      12288:vdZshZWHXnhEE8tpUEx1I94L+R49xIUBZjlP4JH0Y6QC4zmEs0mwF0WOs5HvrWZO:vzshZEXw7jIS6RuXGUDQFDMEKW4THM00

    • 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