Overview

overview

8

Static

static

1

avast_free...ne.exe

windows10-2004-x64

8

avast_free...ne.exe

windows11-ltsc_2024-x64

6

Resubmissions

11/07/2026, 21:28

260711-1bd8qsax3m8

11/07/2026, 21:24

260711-z83f6aaw9m6

Sharing

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General

  • Target
    avast_free_antivirus_setup_online.exe
  • Size 245KB
  • Sample260711-1bd8qsax3m
  • SHA256 4d664761266935c95a76f2b50757cd05e7ed0eab63ac3ac3078d093d6e70b4a9
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
8/10
bootkitdiscoverypersistence

Malware Config

Targets

    • Target
      avast_free_antivirus_setup_online.exe
    • Size 245KB
    • SHA256 4d664761266935c95a76f2b50757cd05e7ed0eab63ac3ac3078d093d6e70b4a9
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    8/10
    bootkitdiscoverypersistence

    • Uses Session Manager for persistence

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

      persistence

    • Checks for any installed AV software in registry

    • Downloads MZ/PE file

    • 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 v16

Tasks