Samirbous
0eacf484a0
* [New Rule] Scheduled Task Created via Windows Scripts * added powershell * Update persistence_local_scheduled_task_scripting.toml * Update rules/windows/persistence_local_scheduled_task_scripting.toml Co-authored-by: dstepanic17 <57736958+dstepanic17@users.noreply.github.com> * increased maxspan as per Dan sugg * eql syntax * eql syntax * ecs_version * Update rules/windows/persistence_local_scheduled_task_scripting.toml Co-authored-by: Brent Murphy <56412096+bm11100@users.noreply.github.com> Co-authored-by: dstepanic17 <57736958+dstepanic17@users.noreply.github.com> Co-authored-by: Brent Murphy <56412096+bm11100@users.noreply.github.com>
41 lines
1.4 KiB
TOML
41 lines
1.4 KiB
TOML
[metadata]
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creation_date = "2020/11/29"
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maturity = "production"
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updated_date = "2020/11/29"
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[rule]
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author = ["Elastic"]
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description = "A scheduled task was created by a Windows script via cscript.exe, wscript.exe or powershell.exe. This can be abused by an adversary to establish persistence."
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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-endpoint.events.*"]
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language = "eql"
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license = "Elastic License"
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name = "Scheduled Task Created by a Windows Script"
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note = "Decode the base64 encoded Tasks Actions registry value to investigate the task's configured action."
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risk_score = 43
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rule_id = "689b9d57-e4d5-4357-ad17-9c334609d79a"
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severity = "medium"
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tags = ["Elastic", "Host", "Windows", "Threat Detection", "Persistence"]
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type = "eql"
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query = '''
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sequence by host.id with maxspan = 30s
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[library where file.name : "taskschd.dll" and process.name : ("cscript.exe", "wscript.exe", "powershell.exe")]
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[registry where registry.path : "HKLM\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Schedule\\TaskCache\\Tasks\\*\\Actions"]
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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.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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