Extracted

Extracted

• • Target

    BootstrapperNew.exe

  • Size

    2.9MB

  • MD5

    252177d06315973a76fdaaca7caa5143

  • SHA1

    8af1e7c8eee8e0f89dacffffea3725a51f4804e9

  • SHA256

    4ec13f5a477ff33e2c1ef8b67496c4dd074461649b97f559182e6d706b72e7ee

  • SHA512

    bda36550ea73ec17f6fc24461ce117edaf1e112fcbead63f61fd8a15076c1178fa33fea485304b6d03b0f19243663bc68cda89d4a2001a0f475ec780c83f804e

  • SSDEEP

    49152:x9FDefja16jgYFYYl+YKJIPFPAa8+gXhclErIG5s1+O4jGSuZV/dcz/ThhHmlUO5:lef+16jh9nuQAncl+Iic+36/dc3XGuOd

  Score

  10^/10

  xwormbootkitdefense_evasiondiscoveryexecutionpersistencerattrojan

  • 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

  • Modifies Windows Defender Real-time Protection settings

    defense_evasiontrojan

  • 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

  • Drops file in Drivers directory

  • 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

  • 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

  • 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