Extracted

Extracted

• • Target

    BootstrapperNew.exe

  • Size

    2.9MB

  • MD5

    31052a03930f6c98a18d6f2454f153cc

  • SHA1

    349a9571c3e531a00d44b298cf144983e07e4e97

  • SHA256

    285e4e396d7884c830c47d82fff67ae10250698862dd8a1dccd2d3e6f96908a6

  • SHA512

    0f86ddb2b2eae5d2d2c78ba4700f411650b83b7590477b25954aa829afdb85d03e6d7915630e1817601ef70493ed1d6024ef95bdd95ed8b501f3102120c5e925

  • SSDEEP

    49152:HVnCHjmzFQhpY8YbpmCgk65CS+wZ8i0aDsvjZGNGEB/C6pFah5vH3NiMSVHIQGW:HVCDoq3sQNkgCSL0a47Z0/Ck+v9BS6QV

  Score

  10^/10

  xwormbootkitdefense_evasiondiscoveryexecutionpersistencerattrojan

  • Detect Xworm Payload

  • Suspicious use of NtCreateUserProcessOtherParentProcess

  • Xworm

    Xworm is a remote access trojan written in C#.

    trojanratxworm

  • Xworm family

    xworm

  • Blocklisted process makes network request

  • Command and Scripting Interpreter: PowerShell

    Run Powershell and hide display window.

    execution

  • Downloads MZ/PE file

  • 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

  • Adds Run key to start application

    persistence

  • Legitimate hosting services abused for malware hosting/C2

  • Obfuscated Files or Information: Command Obfuscation

    Adversaries may obfuscate content during command execution to impede detection.

    defense_evasion

  • 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

  behavioral1