Extracted

• • Target

    loader.exe

  • Size

    363KB

  • MD5

    1b0b97cb1346c496b8368b3e9622d8fd

  • SHA1

    ebe3c3f59f26d341933317dec9ed00b041c90d04

  • SHA256

    32ea7d3ceea4b73b2a98ef55aebc41581fdfad995fe9d9cc2411dedc1806f28a

  • SHA512

    05a4933ed5c5f965058c03ff00828e7bafc71966804955d7962bc6cb8ebab96a1c8f435b9157da3c2a8aa8549b0807d902820831a7ca1108f6491fa6919fe22e

  • SSDEEP

    6144:a5kgvH9LLVEbIALguKV5BwUnZqazMhD9RLJt88sndcP8pPyDvUGOksWb:s9Lh9qKLBwiZlzMB9xgndcP88DvvP

  Score

  10^/10

  xwormdefense_evasiondiscoveryexecutionpersistencerattrojanbootkit

  • Detect Xworm Payload

  • Modifies security service

    defense_evasion

  • Suspicious use of NtCreateUserProcessOtherParentProcess

  • Xworm

    Xworm is a remote access trojan written in C#.

    trojanratxworm

  • Xworm family

    xworm

  • Boot or Logon Autostart Execution: Active Setup

    Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    persistence

  • Sets service image path in registry

    persistence

  • Checks BIOS information in registry

    BIOS information is often read in order to detect sandboxing environments.

  • Checks computer location settings

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE

  • Indicator Removal: Clear Windows Event Logs

    Clear Windows Event Logs to hide the activity of an intrusion.

    defense_evasion

  • Loads dropped DLL

  • Adds Run key to start application

    persistence

  • Command and Scripting Interpreter: PowerShell

    Run Powershell to get system information.

    execution

  • Enumerates connected drives

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

  • 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

  • Drops file in System32 directory

  • Suspicious use of SetThreadContext

  behavioral1behavioral2