Fsutil Drive Enumeration

Severity: low
Author: Christopher Peacock '@securepeacock', SCYTHE '@scythe_io'
Source: upstream

Attackers may leverage fsutil to enumerated connected drives.

MITRE ATT&CK coverage

Tactic	Techniques
Discovery	`T1120` Peripheral Device Discovery

Event coverage

Provider	Event ID	Title
Sysmon	1	Process creation

Stages and Predicates

Stage 1: `all of selection_img`

or:
Image|endswith: '\fsutil.exe'
OriginalFileName: fsutil.exe

Stage 2: `all of selection_cli`

CommandLine|contains: drives

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	`drives`
`Image`	ends_with	`\fsutil.exe` corpus 4 (sigma 4)
`OriginalFileName`	eq	`fsutil.exe` corpus 2 (sigma 2)