shashank-elastic
69 lines
2.5 KiB
TOML
69 lines
2.5 KiB
TOML
[metadata]
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creation_date = "2022/08/29"
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integration = ["system", "windows"]
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maturity = "production"
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updated_date = "2024/05/21"
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[rule]
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author = ["Elastic"]
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description = """
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Indicates the update of a scheduled task using Windows event logs. Adversaries can use these to establish persistence,
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by changing the configuration of a legit scheduled task. Some changes such as disabling or enabling a scheduled task are
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common and may may generate noise.
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"""
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false_positives = ["Legitimate scheduled tasks may be created during installation of new software."]
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from = "now-9m"
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index = ["winlogbeat-*", "logs-system.*", "logs-windows.*"]
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language = "eql"
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license = "Elastic License v2"
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name = "A scheduled task was updated"
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references = ["https://docs.microsoft.com/en-us/windows/security/threat-protection/auditing/event-4698"]
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risk_score = 47
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rule_id = "a02cb68e-7c93-48d1-93b2-2c39023308eb"
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severity = "medium"
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tags = ["Domain: Endpoint", "OS: Windows", "Use Case: Threat Detection", "Tactic: Persistence"]
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timestamp_override = "event.ingested"
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type = "eql"
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query = '''
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iam where event.action == "scheduled-task-updated" and
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/* excluding tasks created by the computer account */
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not user.name : "*$" and
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not winlog.event_data.TaskName : "*Microsoft*" and
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not winlog.event_data.TaskName :
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("\\User_Feed_Synchronization-*",
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"\\OneDrive Reporting Task-S-1-5-21*",
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"\\OneDrive Reporting Task-S-1-12-1-*",
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"\\Hewlett-Packard\\HP Web Products Detection",
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"\\Hewlett-Packard\\HPDeviceCheck",
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"\\Microsoft\\Windows\\UpdateOrchestrator\\UpdateAssistant",
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"\\IpamDnsProvisioning",
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"\\Microsoft\\Windows\\UpdateOrchestrator\\UpdateAssistantAllUsersRun",
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"\\Microsoft\\Windows\\UpdateOrchestrator\\UpdateAssistantCalendarRun",
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"\\Microsoft\\Windows\\UpdateOrchestrator\\UpdateAssistantWakeupRun",
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"\\Microsoft\\Windows\\.NET Framework\\.NET Framework NGEN v*",
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"\\Microsoft\\VisualStudio\\Updates\\BackgroundDownload") and
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not winlog.event_data.SubjectUserSid : ("S-1-5-18", "S-1-5-19", "S-1-5-20")
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'''
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[[rule.threat]]
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framework = "MITRE ATT&CK"
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[[rule.threat.technique]]
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id = "T1053"
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name = "Scheduled Task/Job"
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reference = "https://attack.mitre.org/techniques/T1053/"
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[[rule.threat.technique.subtechnique]]
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id = "T1053.005"
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name = "Scheduled Task"
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reference = "https://attack.mitre.org/techniques/T1053/005/"
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[rule.threat.tactic]
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id = "TA0003"
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name = "Persistence"
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reference = "https://attack.mitre.org/tactics/TA0003/"
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