General

  • Target

    991d1e29a1575cacedd43b0cc6254e4e8b905302238b354758933343bfac70da.exe

  • Size

    3.3MB

  • Sample

    240913-by9wgsxelc

  • MD5

    b3bd87511cd987ba5747e942aad1ddc3

  • SHA1

    56393b3565d8584d8f2a296facd1bf23db3cb60b

  • SHA256

    991d1e29a1575cacedd43b0cc6254e4e8b905302238b354758933343bfac70da

  • SHA512

    bf5c6dc986464cad124d0cf1c5a38323527ef144487c2759bfa1df24f125ed6c02da3e14f696cc9a29caf5f4e7d05741927064e27856170ea0fec78e7b8c2cea

  • SSDEEP

    12288:dRtQiMYE1YZboRaX4UaAevPHrukqyqeFS6IoAI0X2b2IZePV65tCuQxZNCmhydeW:ORYEKt3o3AOPHLXFS6bSLo50uEZzyMW

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

127.0.0.1:45588

zuesremmy.duckdns.org:45588

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-5FB45N

  • 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

      991d1e29a1575cacedd43b0cc6254e4e8b905302238b354758933343bfac70da.exe

    • Size

      3.3MB

    • MD5

      b3bd87511cd987ba5747e942aad1ddc3

    • SHA1

      56393b3565d8584d8f2a296facd1bf23db3cb60b

    • SHA256

      991d1e29a1575cacedd43b0cc6254e4e8b905302238b354758933343bfac70da

    • SHA512

      bf5c6dc986464cad124d0cf1c5a38323527ef144487c2759bfa1df24f125ed6c02da3e14f696cc9a29caf5f4e7d05741927064e27856170ea0fec78e7b8c2cea

    • SSDEEP

      12288:dRtQiMYE1YZboRaX4UaAevPHrukqyqeFS6IoAI0X2b2IZePV65tCuQxZNCmhydeW:ORYEKt3o3AOPHLXFS6bSLo50uEZzyMW

    • Remcos

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

    • UAC bypass

    • Windows security bypass

    • 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.

    • Windows security modification

    • Accesses Microsoft Outlook accounts

    • Checks whether UAC is enabled

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks