Service StartupType Change Via Sc.EXE

Severity: medium
Author: Nasreddine Bencherchali (Nextron Systems)
Source: upstream

Detect the use of "sc.exe" to change the startup type of a service to "disabled" or "demand"

MITRE ATT&CK coverage

Tactic	Techniques
Defense Evasion	`T1562.001` Impair Defenses: Disable or Modify Tools

Event coverage

Provider	Event ID	Title
Sysmon	1	Process creation

Stages and Predicates

Stage 1: `all of selection_img`

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

Stage 2: `all of selection_cli`

or:
CommandLine|contains: demand
CommandLine|contains: disabled
CommandLine|contains: ' config '
CommandLine|contains: start

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	`config` `demand` `disabled` `start` corpus 6 (sigma 6)
`Image`	ends_with	`\sc.exe` corpus 17 (sigma 17)
`OriginalFileName`	eq	`sc.exe` corpus 10 (sigma 10)