HackTool - Default PowerSploit/Empire Scheduled Task Creation

Severity: high
Author: Markus Neis, @Karneades
Source: upstream

Detects the creation of a schtask via PowerSploit or Empire Default Configuration.

MITRE ATT&CK coverage

Tactic	Techniques
Execution	`T1053.005` Scheduled Task/Job: Scheduled Task, `T1059.001` Command and Scripting Interpreter: PowerShell
Persistence	`T1053.005` Scheduled Task/Job: Scheduled Task
Privilege Escalation	`T1053.005` Scheduled Task/Job: Scheduled Task

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: '/SC DAILY /ST'
CommandLine|contains: '/SC HOURLY'
CommandLine|contains: '/SC ONIDLE'
CommandLine|contains: '/SC ONLOGON'
or:
ParentImage|endswith: '\powershell.exe'
ParentImage|endswith: '\pwsh.exe'
CommandLine|contains: '/Create'
CommandLine|contains: '/TN Updater /TR'
CommandLine|contains: 'powershell.exe -NonI'
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.