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General

  • Target

    NursultanLoader.exe

  • Size

    337KB

  • Sample

    240529-v75snscb41

  • MD5

    824b28b6af4316c96e9a181e341fe6ad

  • SHA1

    49ad85fa5ca6dffa4dec4871bd0cd44abc8c0b5d

  • SHA256

    6005eaef1b00bdfeef8c87db8ff80bce2f23f3c8b392dfbec9f5a4f27b0c7ec9

  • SHA512

    1b3ff6f2a90157e45f4a9404a76de8d460b7705d1c34999e4b87d89d0d00961618e8a69c77f21edf1a9bc253cc432ba8a01377535484fc739370bf3314a5d2cc

  • SSDEEP

    6144:GfcWgBhbib+GIIIIIIIhIIIIIIIIIIIIIIIU:scWH8

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:7000

123.0.0.1:7000

Attributes
  • Install_directory

    %AppData%

  • install_file

    Steam.exe

Targets

    • Target

      NursultanLoader.exe

    • Size

      337KB

    • MD5

      824b28b6af4316c96e9a181e341fe6ad

    • SHA1

      49ad85fa5ca6dffa4dec4871bd0cd44abc8c0b5d

    • SHA256

      6005eaef1b00bdfeef8c87db8ff80bce2f23f3c8b392dfbec9f5a4f27b0c7ec9

    • SHA512

      1b3ff6f2a90157e45f4a9404a76de8d460b7705d1c34999e4b87d89d0d00961618e8a69c77f21edf1a9bc253cc432ba8a01377535484fc739370bf3314a5d2cc

    • SSDEEP

      6144:GfcWgBhbib+GIIIIIIIhIIIIIIIIIIIIIIIU:scWH8

    • Detect Xworm Payload

    • Xworm

      Xworm is a remote access trojan written in C#.

    • 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