Potential SysInternals ProcDump Evasion

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

Detects uses of the SysInternals ProcDump utility in which ProcDump or its output get renamed, or a dump file is moved or copied to a different name

MITRE ATT&CK coverage

Tactic	Techniques
Defense Evasion	`T1036` Masquerading
Credential Access	`T1003.001` OS Credential Dumping: LSASS Memory

Event coverage

Provider	Event ID	Title
Sysmon	1	Process creation
Security-Auditing	4688	A new process has been created.

Stages and Predicates

Stage 1: `1 of selection_1`

or:
CommandLine|contains: 'copy procdump'
CommandLine|contains: 'move procdump'

Stage 2: `1 of selection_2`

or:
CommandLine|contains: 2.dmp
CommandLine|contains: lsass
CommandLine|contains: out.dmp
CommandLine|contains: '.dmp '
CommandLine|contains: 'copy '

Stage 3: `1 of selection_3`

or:
CommandLine|contains: 'copy lsass.exe_'
CommandLine|contains: 'move lsass.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.

Field	Kind	Values
`CommandLine`	match	`.dmp` corpus 2 (sigma 2) `2.dmp` `copy` corpus 11 (sigma 11) `copy lsass.exe_` `copy procdump` `lsass` corpus 4 (sigma 4) `move lsass.exe_` `move procdump` `out.dmp`