Overview

overview

10

Static

static

URLScan

urlscan

https://www.avast.co...

windows7-x64

8

https://www.avast.co...

windows10-2004-x64

10

Sharing

Copy URL
Twitter E-mail

General

  • Target

    https://www.avast.com/c-malware-removal-tool

  • Sample

    220925-daqh2seccm

Score
10/10
bootkitdiscoverypersistence

Malware Config

Targets

    • Target

      https://www.avast.com/c-malware-removal-tool

    Score
    10/10
    bootkitdiscoverypersistence

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Executes dropped EXE

    • Registers COM server for autorun

      persistence

    • Sets service image path in registry

      persistence

    • Uses Session Manager for persistence

      Creates Session Manager registry key to run executable early in system boot.

      persistence

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Checks for any installed AV software in registry

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

      discovery

    • 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

    behavioral1behavioral2

MITRE ATT&CK Enterprise v6

Tasks