WerFault LSASS Process Memory Dump

Severity: high
Author: Florian Roth (Nextron Systems)
Source: upstream

Detects WerFault creating a dump file with a name that indicates that the dump file could be an LSASS process memory, which contains user credentials

MITRE ATT&CK coverage

Tactic	Techniques
Credential Access	`T1003.001` OS Credential Dumping: LSASS Memory

Event coverage

Provider	Event ID	Title
Sysmon	11	FileCreate

Stages and Predicates

Stage 1: `selection`

or:
TargetFilename|contains: '\lsass'
TargetFilename|contains: lsass.exe
Image: 'C:\WINDOWS\system32\WerFault.exe'

Indicators

Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.