Renamed Sysinternals Sdelete Execution

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

Detects the use of a renamed SysInternals Sdelete, which is something an administrator shouldn't do (the renaming)

MITRE ATT&CK coverage

Tactic	Techniques
Impact	`T1485` Data Destruction

Event coverage

Provider	Event ID	Title
Sysmon	1	Process creation

Stages and Predicates

Stage 1: `selection`

OriginalFileName: sdelete.exe

Stage 2: `not filter`

or:
Image|endswith: '\sdelete.exe'
Image|endswith: '\sdelete64.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
`Image`	ends_with	`\sdelete.exe` corpus 3 (sigma 3) `\sdelete64.exe` corpus 2 (sigma 2)
`OriginalFileName`	eq	`sdelete.exe` corpus 2 (sigma 2)