Overview

overview

10

Static

static

3

Nursultan.exe

windows10-2004-x64

10

Nursultan.exe

windows10-ltsc_2021-x64

10

Nursultan.exe

windows11-21h2-x64

10

Sharing

Copy URL Twitter E-mail

General

  • Target
    Nursultan.exe (123).7z
  • Size 15.9MB
  • Sample251208-e4rhwa1jfl
  • SHA256 a722691bd9c2651e1a735f99c85e2b9df02c376eb34ebceddba41c195c28b68b
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
xwormexecutionpersistencerattrojan

Malware Config

Extracted

Family

  • xworm

C2

  • Aytac7771-43366.portmap.host:43366

Mutex

  • wYZdq9bCrXQvbuJG

Attributes
  • Install_directory

    %LocalAppData%

  • install_file

    Runtime Broker.exe

aes.plain

Targets

    • Target
      Nursultan.exe
    • Size 16.0MB
    • SHA256 de01f59d93f3999ef9ece06a45cbd7607a54843c9c9bf015d20191d1a638dc22
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    executionxwormpersistencerattrojan

    • Detect Xworm Payload

    • Xworm

      Xworm is a remote access trojan written in C#.

      trojanratxworm

    • Xworm family

      xworm

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

      execution

    • 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

      persistence

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    behavioral1behavioral2behavioral3

MITRE ATT&CK Enterprise v16

Tasks