Samirbous
b15f0de9a4
* [Rules Tuning] 7 diverse Windows rules Excluding FP patterns while avoiding breaking compat with winlogbeat and 4688 events lack of codesign metadata. * Update initial_access_suspicious_ms_exchange_process.toml * Update privilege_escalation_persistence_phantom_dll.toml * Update execution_psexec_lateral_movement_command.toml * Update persistence_remote_password_reset.toml * Update non-ecs-schema.json * Update persistence_remote_password_reset.toml * Update non-ecs-schema.json * Update discovery_privileged_localgroup_membership.toml
91 lines
3.5 KiB
TOML
91 lines
3.5 KiB
TOML
[metadata]
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creation_date = "2020/01/07"
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maturity = "production"
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updated_date = "2022/08/02"
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[rule]
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author = ["Elastic"]
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description = """
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Identifies the loading of a non Microsoft signed DLL that is missing on a default Windows install (phantom DLL) or one
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that can be loaded from a different location by a native Windows process. This may be abused to persist or elevate
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privileges via privileged file write vulnerabilities.
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"""
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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 DLL Loaded for Persistence or Privilege Escalation"
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note = """## Setup
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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://itm4n.github.io/windows-dll-hijacking-clarified/",
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"http://remoteawesomethoughts.blogspot.com/2019/05/windows-10-task-schedulerservice.html",
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"https://googleprojectzero.blogspot.com/2018/04/windows-exploitation-tricks-exploiting.html",
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"https://shellz.club/2020/10/16/edgegdi-dll-for-persistence-and-lateral-movement.html",
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"https://windows-internals.com/faxing-your-way-to-system/",
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"http://waleedassar.blogspot.com/2013/01/wow64logdll.html",
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]
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risk_score = 73
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rule_id = "bfeaf89b-a2a7-48a3-817f-e41829dc61ee"
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severity = "high"
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tags = ["Elastic", "Host", "Windows", "Threat Detection", "Persistence", "Privilege Escalation"]
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timestamp_override = "event.ingested"
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type = "eql"
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query = '''
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any where
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(event.category == "library" or (event.category == "process" and event.action : "Image loaded*")) and
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(
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/* compatible with Elastic Endpoint Library Events */
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(dll.name : ("wlbsctrl.dll", "wbemcomn.dll", "WptsExtensions.dll", "Tsmsisrv.dll", "TSVIPSrv.dll", "Msfte.dll",
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"wow64log.dll", "WindowsCoreDeviceInfo.dll", "Ualapi.dll", "wlanhlp.dll", "phoneinfo.dll", "EdgeGdi.dll",
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"cdpsgshims.dll", "windowsperformancerecordercontrol.dll", "diagtrack_win.dll")
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and (dll.code_signature.trusted == false or dll.code_signature.exists == false)) or
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/* compatible with Sysmon EventID 7 - Image Load */
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(file.name : ("wlbsctrl.dll", "wbemcomn.dll", "WptsExtensions.dll", "Tsmsisrv.dll", "TSVIPSrv.dll", "Msfte.dll",
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"wow64log.dll", "WindowsCoreDeviceInfo.dll", "Ualapi.dll", "wlanhlp.dll", "phoneinfo.dll", "EdgeGdi.dll",
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"cdpsgshims.dll", "windowsperformancerecordercontrol.dll", "diagtrack_win.dll")
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and not file.code_signature.status == "Valid")
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)
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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 = "T1574"
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name = "Hijack Execution Flow"
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reference = "https://attack.mitre.org/techniques/T1574/"
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[[rule.threat.technique.subtechnique]]
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id = "T1574.002"
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name = "DLL Side-Loading"
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reference = "https://attack.mitre.org/techniques/T1574/002/"
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[rule.threat.tactic]
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id = "TA0004"
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name = "Privilege Escalation"
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reference = "https://attack.mitre.org/tactics/TA0004/"
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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 = "T1574"
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name = "Hijack Execution Flow"
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reference = "https://attack.mitre.org/techniques/T1574/"
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[[rule.threat.technique.subtechnique]]
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id = "T1574.001"
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name = "DLL Search Order Hijacking"
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reference = "https://attack.mitre.org/techniques/T1574/001/"
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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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