shashank-elastic
110 lines
4.1 KiB
TOML
110 lines
4.1 KiB
TOML
[metadata]
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creation_date = "2020/11/19"
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integration = ["endpoint", "windows"]
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maturity = "production"
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min_stack_comments = "New fields added: required_fields, related_integrations, setup"
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min_stack_version = "8.3.0"
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updated_date = "2023/10/23"
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[rule]
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author = ["Elastic"]
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description = "Identifies execution of a suspicious program via scheduled tasks by looking at process lineage and command line usage."
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false_positives = ["Legitimate scheduled tasks running third party software."]
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from = "now-9m"
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index = ["winlogbeat-*", "logs-endpoint.events.*", "logs-windows.*"]
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language = "eql"
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license = "Elastic License v2"
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name = "Suspicious Execution via Scheduled Task"
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risk_score = 47
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rule_id = "5d1d6907-0747-4d5d-9b24-e4a18853dc0a"
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setup = """
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If enabling an EQL rule on a non-elastic-agent index (such as beats) for versions <8.2,
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events will not define `event.ingested` and default fallback for EQL rules was not added until version 8.2.
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Hence for this rule to work effectively, users will need to add a custom ingest pipeline to populate
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`event.ingested` to @timestamp.
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For more details on adding a custom ingest pipeline refer - https://www.elastic.co/guide/en/fleet/current/data-streams-pipeline-tutorial.html
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"""
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severity = "medium"
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tags = ["Domain: Endpoint", "OS: Windows", "Use Case: Threat Detection", "Tactic: Persistence", "Tactic: Execution", "Data Source: Elastic Defend"]
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timestamp_override = "event.ingested"
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type = "eql"
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query = '''
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process where host.os.type == "windows" and event.type == "start" and
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/* Schedule service cmdline on Win10+ */
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process.parent.name : "svchost.exe" and process.parent.args : "Schedule" and
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/* add suspicious programs here */
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process.pe.original_file_name in
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(
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"cscript.exe",
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"wscript.exe",
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"PowerShell.EXE",
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"Cmd.Exe",
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"MSHTA.EXE",
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"RUNDLL32.EXE",
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"REGSVR32.EXE",
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"MSBuild.exe",
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"InstallUtil.exe",
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"RegAsm.exe",
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"RegSvcs.exe",
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"msxsl.exe",
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"CONTROL.EXE",
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"EXPLORER.EXE",
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"Microsoft.Workflow.Compiler.exe",
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"msiexec.exe"
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) and
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/* add suspicious paths here */
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process.args : (
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"C:\\Users\\*",
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"C:\\ProgramData\\*",
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"C:\\Windows\\Temp\\*",
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"C:\\Windows\\Tasks\\*",
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"C:\\PerfLogs\\*",
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"C:\\Intel\\*",
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"C:\\Windows\\Debug\\*",
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"C:\\HP\\*") and
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not (process.name : "cmd.exe" and process.args : "?:\\*.bat" and process.working_directory : "?:\\Windows\\System32\\") and
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not (process.name : "cscript.exe" and process.args : "?:\\Windows\\system32\\calluxxprovider.vbs") and
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not (process.name : "powershell.exe" and process.args : ("-File", "-PSConsoleFile") and user.id : "S-1-5-18") and
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not (process.name : "msiexec.exe" and user.id : "S-1-5-18")
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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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[[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 = "TA0002"
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name = "Execution"
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reference = "https://attack.mitre.org/tactics/TA0002/"
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