General

  • Target

    0d29f5c648cbd373d3b46738e2a00917b156053e4eafb1e47481a122cedf0a1e

  • Size

    1002KB

  • Sample

    241127-wjxmtsznfr

  • MD5

    1e3d5cf8e89402325bca1e6a1329f7c7

  • SHA1

    bc31f499894600db104ca347f9e9bbcb6a66c539

  • SHA256

    0d29f5c648cbd373d3b46738e2a00917b156053e4eafb1e47481a122cedf0a1e

  • SHA512

    8a6297f965cd6228e6b63fb3c4c2cd88db6488d8459a94e6f20706454c4af4fab793abe850fe16d1b18149bef0d54240fcd4e1c25c6a42fb8ba36494a598cdbc

  • SSDEEP

    24576:XwMpzxWUtVGnc3iMD6od9f9SbVJQshT3bJhcAZ+ViKqd2:3WU7b3Rt9YpJfrJhl+gKU2

Malware Config

Extracted

Family

remcos

Botnet

Document

C2

45.138.48.25:3333

Attributes
  • audio_folder

    MicRecords

  • audio_path

    ApplicationPath

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    WinUpdate.exe

  • copy_folder

    WinUpdate

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    true

  • install_path

    %Temp%

  • keylog_crypt

    false

  • keylog_file

    WinUpdat.dat

  • keylog_flag

    false

  • keylog_folder

    WinUpdat

  • mouse_option

    false

  • mutex

    Rmc-E10MWO

  • 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

      0d29f5c648cbd373d3b46738e2a00917b156053e4eafb1e47481a122cedf0a1e

    • Size

      1002KB

    • MD5

      1e3d5cf8e89402325bca1e6a1329f7c7

    • SHA1

      bc31f499894600db104ca347f9e9bbcb6a66c539

    • SHA256

      0d29f5c648cbd373d3b46738e2a00917b156053e4eafb1e47481a122cedf0a1e

    • SHA512

      8a6297f965cd6228e6b63fb3c4c2cd88db6488d8459a94e6f20706454c4af4fab793abe850fe16d1b18149bef0d54240fcd4e1c25c6a42fb8ba36494a598cdbc

    • SSDEEP

      24576:XwMpzxWUtVGnc3iMD6od9f9SbVJQshT3bJhcAZ+ViKqd2:3WU7b3Rt9YpJfrJhl+gKU2

    • HawkEye

      HawkEye is a malware kit that has seen continuous development since at least 2013.

    • Hawkeye family

    • Remcos

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

    • Remcos family

    • 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.

    • Uses browser remote debugging

      Can be used control the browser and steal sensitive information such as credentials and session cookies.

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • Accesses Microsoft Outlook accounts

    • Adds Run key to start application

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks