COMMON ATTACK PATTERN ENUMERATION AND CLASSIFICATIONLive MITRE record

CAPEC-579

Replace Winlogon Helper DLL

Winlogon is a part of Windows that performs logon actions. In Windows systems prior to Windows Vista, a registry key can be modified that causes Winlogon to load a DLL on startup. Adversaries may take advantage of this feature to load adversarial code at startup.

Abstraction

Detailed

Typical severity

High

Likelihood of attack

Medium

Understand the attack

What is this attack pattern?

Winlogon is a part of Windows that performs logon actions. In Windows systems prior to Windows Vista, a registry key can be modified that causes Winlogon to load a DLL on startup. Adversaries may take advantage of this feature to load adversarial code at startup.

Requirements

What does the attack require?

Prerequisites

  • Target application or infrastructure exposes an exploitable vulnerability surface.

Skills required

Not stated in the MITRE record.

Resources required

Not stated in the MITRE record.

Defence

How is it prevented and mitigated?

1
Changes to registry entries in "HKLM\Software\Microsoft\Windows NT\Winlogon\Notify" that do not correlate with known software, patch cycles, etc are suspicious. New DLLs written to System32 which do not correlate with known good software or patching may be suspicious.
CAPEC-579: Replace Winlogon Helper DLL — DayBreach Saldırı Sözlüğü · DayBreach