Extracted

• • Target

    XClient.exe

  • Size

    41KB

  • MD5

    5c62d9be667e8d03c0ef82fb4b74c965

  • SHA1

    25836658f7421e5c7ad842e8a01bfaeeee1ced33

  • SHA256

    fed171984a55cc4e3a005fe373e2c28f62d81324674bbeeaba1f95db97a2c8e9

  • SHA512

    a25ddef859675a66a6452421bec9a8593dc77bfa06ac0c704fe1907ecdc903458c4f2383a29d3e3d56158a22248c3d34fe92d20ee346f42e6949cfc9d4120553

  • SSDEEP

    768:w0mrJDweBDuOkScrbsN/x6WECAr43MxfJF5Pa9p+e6iOwha3/ibR:n0DwewicrbsN/YDRrNRF49Ie6iOw0a1

  Score

  10^/10

  stormkittyxwormbootkitdefense_evasiondiscoveryevasionexecutionpersistenceratstealertrojan

  • Contains code to disable Windows Defender

    A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

  • Detect Xworm Payload

  • StormKitty

    StormKitty is an open source info stealer written in C#.

    stealerstormkitty

  • StormKitty payload

  • Xworm

    Xworm is a remote access trojan written in C#.

    trojanratxworm

  • Command and Scripting Interpreter: PowerShell

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

    execution

  • Downloads MZ/PE file

  • Modifies Windows Firewall

    evasion

  • Drops startup file

  • Executes dropped EXE

  • Adds Run key to start application

    persistence

  • Enumerates connected drives

    Attempts to read the root path of hard drives other than the default C: drive.

  • Legitimate hosting services abused for malware hosting/C2

  • Looks up external IP address via web service

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

  • Writes to the Master Boot Record (MBR)

    Bootkits write to the MBR to gain persistence at a level below the operating system.

    bootkitpersistence
  behavioral1