General

  • Target

    99b6692bedd84a5e92e3d7a9f24c826d913c31dfd55ca89bf6eee67f20ee221f.7z

  • Size

    1KB

  • Sample

    240908-d58m4stejm

  • MD5

    759e89e62626686dc6e75bf9527dd9bb

  • SHA1

    a665babc70dffd107445ba2c95769facf900f7f9

  • SHA256

    99b6692bedd84a5e92e3d7a9f24c826d913c31dfd55ca89bf6eee67f20ee221f

  • SHA512

    a96578e1de11b2af1266f98bd35195dd3349db73f50b909c415bc833ae441d7dca38a0a4622ef619f6c388447953b8cafadad4c7f2460a65fa37fc98495c29d3

Malware Config

Extracted

Family

remcos

Botnet

ezeife

C2

closen.kozow.com:2404

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-CDP1EM

  • 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

      AMERICAN GROUP.js

    • Size

      5KB

    • MD5

      709df3d382b86fffeda0e0c534206ec1

    • SHA1

      570e38194e3d5e977af449ca2fe1ef9f05b9c7de

    • SHA256

      ca5a213e123d830ad88e6eb9da341326fa6ea6c5bb535069406f9454b5aecccc

    • SHA512

      8e6d6a7038ae9f3edcec8b2bdbb536f356fe565b11f6114fc06425a1e1efeaa84693e2750d3b4a843daccb799bfc37b8a6b0fd3d8296c43909174b5179ae2365

    • SSDEEP

      96:XHSZyZ020gtthyohPx1MMEqzHQH0TqfpkIiup77jIf:i/dyU4I370

    • 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

    • Blocklisted process makes network request

    • Checks computer location settings

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

    • Drops startup file

    • Reads user/profile data of web browsers

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

    • Accesses Microsoft Outlook accounts

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

    • Legitimate hosting services abused for malware hosting/C2

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks