Samirbous
9460618129
* [New Rule ] Remote Execution via DCOM - MSHTA * corrected tactic * removed timeline_id * added host.id and tightened the netcon clause * changed rule description and name * removed parent process names as condition its optional since process.args is explicit. * Update rules/windows/lateral_movement_dcom_hta.toml Co-authored-by: David French <56409778+threat-punter@users.noreply.github.com> * Update rules/windows/lateral_movement_dcom_hta.toml Co-authored-by: Justin Ibarra <brokensound77@users.noreply.github.com> * ecs_version * localhost filtering * Update rules/windows/lateral_movement_dcom_hta.toml Co-authored-by: Brent Murphy <56412096+bm11100@users.noreply.github.com> Co-authored-by: David French <56409778+threat-punter@users.noreply.github.com> Co-authored-by: Justin Ibarra <brokensound77@users.noreply.github.com> Co-authored-by: Brent Murphy <56412096+bm11100@users.noreply.github.com>
49 lines
1.6 KiB
TOML
49 lines
1.6 KiB
TOML
[metadata]
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creation_date = "2020/11/03"
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maturity = "production"
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updated_date = "2020/11/03"
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[rule]
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author = ["Elastic"]
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description = """
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Identifies the use of Distributed Component Object Model (DCOM) to execute commands from a remote host, which are
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launched via the HTA Application COM Object. This behavior may indicate an attacker abusing a DCOM application to move
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laterally while attempting to evading detection.
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"""
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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 = "Incoming DCOM Lateral Movement via MSHTA"
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references = ["https://codewhitesec.blogspot.com/2018/07/lethalhta.html"]
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risk_score = 73
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rule_id = "622ecb68-fa81-4601-90b5-f8cd661e4520"
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severity = "high"
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tags = ["Elastic", "Host", "Windows", "Threat Detection", "Lateral Movement"]
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type = "eql"
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query = '''
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sequence with maxspan=1m
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[process where event.type in ("start", "process_started") and
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process.name : "mshta.exe" and process.args : "-Embedding"
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] by host.id, process.entity_id
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[network where event.type == "start" and process.name : "mshta.exe" and
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network.direction == "incoming" and network.transport == "tcp" and
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source.port > 49151 and destination.port > 49151 and not source.address in ("127.0.0.1", "::1")
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] by host.id, process.entity_id
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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 = "T1021"
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name = "Remote Services"
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reference = "https://attack.mitre.org/techniques/T1021/"
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[rule.threat.tactic]
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id = "TA0008"
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name = "Lateral Movement"
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reference = "https://attack.mitre.org/tactics/TA0008/"
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