Sigma rule: Suspicious Scheduled Task Name As GUID

Rule

Title

Suspicious Scheduled Task Name As GUID

Status

test

Level

medium

Author

Nasreddine Bencherchali (Nextron Systems)

Date

2022-10-31

File

rules/windows/process_creation/proc_creation_win_schtasks_guid_task_name.yml

Commit

ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects creation of a scheduled task with a GUID like name

Log source

product

windows

category

process_creation

Detection

selection_img:
    Image|endswith: '\schtasks.exe'
    CommandLine|contains: '/Create '
selection_tn:
    CommandLine|contains:
        # Can start with single or double quote
        - '/TN "{'
        - "/TN '{"
        - "/TN {"
selection_end:
    CommandLine|contains:
        # Ending of the name to avoid possible FP in the rest of the commandline
        - '}"'
        - "}'"
        - '} '
condition: all of selection_*

False positives (as the rule lists them)

• Legitimate software naming their tasks as GUIDs

Tags

• attack.privilege-escalation
• attack.persistence
• attack.execution
• attack.t1053.005

MITRE ATT&CK ids this rule names

• T1053.005

References

• https://thedfirreport.com/2022/10/31/follina-exploit-leads-to-domain-compromise/
• https://thedfirreport.com/2022/02/21/qbot-and-zerologon-lead-to-full-domain-compromise/

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/process_creation/proc_creation_win_schtasks_guid_task_name.yml