General

  • Target

    Request for Quotation.pdf.exe

  • Size

    1.6MB

  • Sample

    241031-rskmeayje1

  • MD5

    e431cc534657e37b3e84065eba53105e

  • SHA1

    fc88bf55a27ca270c2c2dc721c64da6966a0a5c1

  • SHA256

    0e4aa3896358b32016c903f837a762052757ebeeb525b4077062864710de329a

  • SHA512

    4894c6dc19987f1b2e902cfa7314de8c179c85135fcd48ee103def925316e9f15fe65bd990c9c61d61a70672b7c1cff30c6c1ff751654f63327b9a2ce1016c03

  • SSDEEP

    12288:C27f6PD2zYzh+FoVIx+AEA4KLvSt6xjplsi:Vf8xzwFdx+Y4kvF5si

Malware Config

Extracted

Family

xworm

Version

3.1

C2

kanrplest.duckdns.org:4068

Mutex

TdUxMCK2FUdy51AH

Attributes
  • Install_directory

    %AppData%

  • install_file

    USB.exe

aes.plain

Targets

    • Target

      Request for Quotation.pdf.exe

    • Size

      1.6MB

    • MD5

      e431cc534657e37b3e84065eba53105e

    • SHA1

      fc88bf55a27ca270c2c2dc721c64da6966a0a5c1

    • SHA256

      0e4aa3896358b32016c903f837a762052757ebeeb525b4077062864710de329a

    • SHA512

      4894c6dc19987f1b2e902cfa7314de8c179c85135fcd48ee103def925316e9f15fe65bd990c9c61d61a70672b7c1cff30c6c1ff751654f63327b9a2ce1016c03

    • SSDEEP

      12288:C27f6PD2zYzh+FoVIx+AEA4KLvSt6xjplsi:Vf8xzwFdx+Y4kvF5si

    • 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.

    • Drops startup file

    • Loads dropped DLL

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks