General

  • Target

    mrpersonisabigfatskid.exe

  • Size

    41KB

  • Sample

    241120-x3cx7s1erb

  • MD5

    83325ba20e90b7f81fb69a030fe99b79

  • SHA1

    d4142e85b70bd70e97bfb6258cf84427ce79eea6

  • SHA256

    91456e4547509c9ddc330deb70e5dd27b5832e00a7e851591c702737327c16fa

  • SHA512

    52441bec8495436e92281081e3dc8ddfb55f73c7aedb52564f6bb92a36380f286f4379da106f93178f58925690e537ba11d05a4b8cf3847bd4bc1786d13c8629

  • SSDEEP

    768:treDweeLOoHdSgDdeLhXvgggCLJF5PG9pmS6vOwh/3Emzf:YDweQldSgDItXvvgcFI9AS6vOwp9D

Malware Config

Extracted

Family

xworm

Version

5.0

C2

10.9.248.138:29647

Mutex

uB9wPEusM22Q2JdW

Attributes
  • Install_directory

    %AppData%

  • install_file

    $77MicrosoftDefender.exe

aes.plain

Targets

    • Target

      mrpersonisabigfatskid.exe

    • Size

      41KB

    • MD5

      83325ba20e90b7f81fb69a030fe99b79

    • SHA1

      d4142e85b70bd70e97bfb6258cf84427ce79eea6

    • SHA256

      91456e4547509c9ddc330deb70e5dd27b5832e00a7e851591c702737327c16fa

    • SHA512

      52441bec8495436e92281081e3dc8ddfb55f73c7aedb52564f6bb92a36380f286f4379da106f93178f58925690e537ba11d05a4b8cf3847bd4bc1786d13c8629

    • SSDEEP

      768:treDweeLOoHdSgDdeLhXvgggCLJF5PG9pmS6vOwh/3Emzf:YDweQldSgDItXvvgcFI9AS6vOwp9D

    • 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

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

MITRE ATT&CK Enterprise v15

Tasks