Overview

overview

7

Static

static

3

yhy.exe

windows10-2004-x64

yhy.exe

windows11-ltsc_2024-x64

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General

  • Target
    yhy.exe
  • Size 4.9MB
  • Sample261012-v2fllayvdx
  • SHA256 b68ddd764e106845d08af6d1e13ef271e54e049c9e00d4171d5fded4e7338979
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
7/10
bootkitexecutionpersistence

Malware Config

Targets

    • Target
      yhy.exe
    • Size 4.9MB
    • SHA256 b68ddd764e106845d08af6d1e13ef271e54e049c9e00d4171d5fded4e7338979
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    7/10
    bootkitexecutionpersistence

    • Executes dropped EXE

    • Enumerates connected drives

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

    • Power Settings

      powercfg controls all configurable power system settings on a Windows system and can be abused to prevent an infected host from locking or shutting down.

      persistence

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

      bootkitpersistence
    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Tasks