Delete Important Scheduled Task

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

Detects when adversaries stop services or processes by deleting their respective scheduled tasks in order to conduct data destructive activities

MITRE ATT&CK coverage

Tactic	Techniques
Impact	`T1489` Service Stop

Event coverage

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

Stages and Predicates

Stage 1: `selection`

or:
CommandLine|contains: '\Windows\BitLocker'
CommandLine|contains: '\Windows\ExploitGuard'
CommandLine|contains: '\Windows\SystemRestore\SR'
CommandLine|contains: '\Windows\UpdateOrchestrator\'
CommandLine|contains: '\Windows\Windows Defender\'
CommandLine|contains: '\Windows\WindowsBackup\'
CommandLine|contains: '\Windows\WindowsUpdate\'
CommandLine|contains: '/delete'
CommandLine|contains: '/tn'
Image|endswith: '\schtasks.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.