Process Memory Dump via RdrLeakDiag.EXE

Severity: high
Author: Cedric MAURUGEON, Florian Roth (Nextron Systems), Swachchhanda Shrawan Poudel, Nasreddine Bencherchali (Nextron Systems)
Source: upstream

Detects the use of the Microsoft Windows Resource Leak Diagnostic tool "rdrleakdiag.exe" to dump process memory

MITRE ATT&CK coverage

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

Event coverage

Provider	Event ID	Title
Sysmon	1	Process creation

Stages and Predicates

Stage 1: `all of selection_img`

or:
Image|endswith: '\rdrleakdiag.exe'
OriginalFileName: RdrLeakDiag.exe

Stage 2: `all of selection_cli_dump`

or:
CommandLine|contains: '/memdmp'
CommandLine|contains: fullmemdmp

Stage 3: `all of selection_cli_output_process`

or:
CommandLine|contains: ' /o '
CommandLine|contains: ' /p '

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.

Field	Kind	Values
`CommandLine`	match	`/o` corpus 2 (sigma 2) `/p` `/memdmp` `fullmemdmp`
`Image`	ends_with	`\rdrleakdiag.exe`
`OriginalFileName`	eq	`RdrLeakDiag.exe`