Justin Ibarra
6bdfddac8e
* Expand timestamp_override tests * removed timestamp_override from eql sequence rules * add config entry for eql rules with beats index and t_o * add timestamp_override to missing fields
54 lines
1.9 KiB
TOML
54 lines
1.9 KiB
TOML
[metadata]
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creation_date = "2020/09/03"
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maturity = "production"
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updated_date = "2022/03/31"
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[rule]
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author = ["Elastic"]
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description = "Identifies the Windows Defender configuration utility (MpCmdRun.exe) being used to download a remote file."
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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 = "Remote File Download via MpCmdRun"
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note = """## Triage and analysis
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### Investigating Remote File Download via MpCmdRun
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Verify details such as the parent process, URL reputation, and downloaded file details. Additionally, `MpCmdRun` logs this information in the Appdata Temp folder in `MpCmdRun.log`.
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## Config
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If enabling an EQL rule on a non-elastic-agent index (such as beats) for versions <8.2, events will not define `event.ingested` and default fallback for EQL rules was not added until 8.2, so you will need to add a custom pipeline to populate `event.ingested` to @timestamp for this rule to work.
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"""
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references = [
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"https://twitter.com/mohammadaskar2/status/1301263551638761477",
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"https://www.bleepingcomputer.com/news/microsoft/microsoft-defender-can-ironically-be-used-to-download-malware/",
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]
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risk_score = 47
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rule_id = "c6453e73-90eb-4fe7-a98c-cde7bbfc504a"
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severity = "medium"
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tags = ["Elastic", "Host", "Windows", "Threat Detection", "Command and Control"]
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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 event.type == "start" and
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(process.name : "MpCmdRun.exe" or process.pe.original_file_name == "MpCmdRun.exe") and
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process.args : "-DownloadFile" and process.args : "-url" and process.args : "-path"
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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 = "T1105"
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name = "Ingress Tool Transfer"
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reference = "https://attack.mitre.org/techniques/T1105/"
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[rule.threat.tactic]
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id = "TA0011"
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name = "Command and Control"
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reference = "https://attack.mitre.org/tactics/TA0011/"
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