Detection rules › Sigma

Suspicious Scheduled Task Write to System32 Tasks

Severity
high
Author
Florian Roth (Nextron Systems)
Source
upstream

Detects the creation of tasks from processes executed from suspicious locations

MITRE ATT&CK coverage

TacticTechniques
ExecutionT1053 Scheduled Task/Job
PersistenceT1053 Scheduled Task/Job
Privilege EscalationT1053 Scheduled Task/Job

Event coverage

ProviderEvent IDTitle
Sysmon11FileCreate

Stages and Predicates

Stage 1: selection

or:
Image|contains: 'C:\PerfLogs'
Image|contains: '\AppData\'
Image|contains: '\Windows\System32\config\systemprofile'
TargetFilename|contains: '\Windows\System32\Tasks'

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.

FieldKindValues
Imagematch
  • C:\PerfLogs
  • \AppData\ corpus 9 (sigma 9)
  • \Windows\System32\config\systemprofile
TargetFilenamematch
  • \Windows\System32\Tasks