Overview

overview

9

Static

static

3

knBhuL1P6vUL.exe

windows10-2004-x64

9

knBhuL1P6vUL.exe

windows11-ltsc_2024-x64

9

Sharing

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General

  • Target
    knBhuL1P6vUL.exe
  • Size 30.6MB
  • Sample260813-vrl1matwez
  • SHA256 e2271f53d54f66111afc8f2be52efa0ed20c72b1667689e7ac70246858d2cd37
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
bootkitdefense_evasionexecutionpersistenceprivilege_escalationtrojan

Malware Config

Targets

    • Target
      knBhuL1P6vUL.exe
    • Size 30.6MB
    • SHA256 e2271f53d54f66111afc8f2be52efa0ed20c72b1667689e7ac70246858d2cd37
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    9/10
    bootkitdefense_evasionexecutionpersistenceprivilege_escalationtrojan

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

      defense_evasion

    • Drops file in Drivers directory

    • Modifies Windows Firewall

      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

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1
T1059

Windows Command Shell

1
T1059.003

Persistence

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Privilege Escalation

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Defense Evasion

Impair Defenses

1
T1562

Disable or Modify System Firewall

1
T1562.004

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Virtualization/Sandbox Evasion

1
T1497

Credential Access

Discovery

Query Registry

3
T1012

System Information Discovery

3
T1082

Virtualization/Sandbox Evasion

1
T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks