Overview

overview

9

Static

static

3

ST_Interna...er.exe

windows11-21h2-x64

9

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General

  • Target
    ST_Internal_Loader.exe
  • Size 17.9MB
  • Sample260808-fm311styct
  • SHA256 bfd4c2690b113c10b2c7a800c68927f7f81383f0697e2578b8545fecd16ebe92
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
bootkitdefense_evasionexecutionpersistencetrojan

Malware Config

Targets

    • Target
      ST_Internal_Loader.exe
    • Size 17.9MB
    • SHA256 bfd4c2690b113c10b2c7a800c68927f7f81383f0697e2578b8545fecd16ebe92
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    9/10
    bootkitdefense_evasionexecutionpersistencetrojan

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

      defense_evasion

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Checks whether UAC is enabled

      defense_evasiontrojan

    • Writes to the Master Boot Record (MBR)

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

      bootkitpersistence

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    behavioral1

MITRE ATT&CK Enterprise v16

Tasks