General

  • Target

    9cebebd09de5e986f253731610e8f3cf7a49460e1026fa3f2d6fc82326313ebf.gz

  • Size

    485KB

  • Sample

    240729-brcmeazeqg

  • MD5

    db6e686573a2830a04c7f455f77251f0

  • SHA1

    abfd5ad4fedaa859f90360af65db6848ee70a977

  • SHA256

    9cebebd09de5e986f253731610e8f3cf7a49460e1026fa3f2d6fc82326313ebf

  • SHA512

    aafd1b78af76c86d863634d66a1d9825a70c733077f3deb72166c2c7a03631e17c103094286a0565b4c5d3b1a8a6f9d0c0cafe4025ec6cd1b598d91d32227792

  • SSDEEP

    12288:puFEn5mtm/Nq1yS8T3sfEtJXDRho0zKDRr2V5+ViPytgdLCctA1vFo:LbSFfWD3zKDE5+VqOULCtNFo

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

127.0.0.1:52121

officerem.duckdns.org:52121

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-UNX1LL

  • 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

      Payment advice.exe

    • Size

      984KB

    • MD5

      6a1d43b00df8bb716f6214e22100fcbc

    • SHA1

      9def240c9c782c14e7ff1cc30f16865625e76a22

    • SHA256

      e52b1a84025c87020660956c94fe9678b2fda617c9acc4464a88274a206f0fb4

    • SHA512

      d63ae04922d509ff519a55ff0472629a2db45d463fcfb3e0996a992e5f0d8d120195cf2737549274cce0985b72c5647daed767dc9e21858239bcca70f4bf63ec

    • SSDEEP

      24576:QoDIHCBqqUZk2LWE4avXEIugZncPCi4LAP0i03W7Cw:Q2Qf4avEIugZQp4LAP0i03W7N

    • 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

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Accesses Microsoft Outlook accounts

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks