General

  • Target

    downloader.exe

  • Size

    30.1MB

  • Sample

    241102-aawhhsvpct

  • MD5

    f492b89f4f36a71d994c7ce83f558579

  • SHA1

    c8cdf059e7568e4430cebc265dba1d63938c2814

  • SHA256

    a6a9fafb69e4b1e6c029d3662b1b2f4df6602971adf7b117829ad14eecfc88dc

  • SHA512

    8b3dd729a99de147908e3091d736607f19d29bf1da2a1dd304db8bb561e5c2fd8df277737f52e61e238acc5a9c12de3626c459e5a8f3ad87161cc0bfa784b618

  • SSDEEP

    393216:R8oimu7izBxR3QRzhzvQ99Sq8lu0q5tDJKoWSxJGBL7aQmo+AJCcLKAs:R9w9wD5xUeQbJCc0

Malware Config

Extracted

Family

xworm

Version

3.1

C2

83.38.24.1:1603

Attributes
  • Install_directory

    %Userprofile%

  • install_file

    USB.exe

Targets

    • Target

      downloader.exe

    • Size

      30.1MB

    • MD5

      f492b89f4f36a71d994c7ce83f558579

    • SHA1

      c8cdf059e7568e4430cebc265dba1d63938c2814

    • SHA256

      a6a9fafb69e4b1e6c029d3662b1b2f4df6602971adf7b117829ad14eecfc88dc

    • SHA512

      8b3dd729a99de147908e3091d736607f19d29bf1da2a1dd304db8bb561e5c2fd8df277737f52e61e238acc5a9c12de3626c459e5a8f3ad87161cc0bfa784b618

    • SSDEEP

      393216:R8oimu7izBxR3QRzhzvQ99Sq8lu0q5tDJKoWSxJGBL7aQmo+AJCcLKAs:R9w9wD5xUeQbJCc0

    • Detect Xworm Payload

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Xworm family

    • 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.

    • Drops startup file

    • Executes dropped EXE

    • Adds Run key to start application

    • Legitimate hosting services abused for malware hosting/C2

MITRE ATT&CK Enterprise v15

Tasks