Jonhnathan
b4c84e8a40
* Update Tags * Bump updated date separately to be easy to revert if needed * Update resource_development_ml_linux_anomalous_compiler_activity.toml * Apply changes from the discussion * Update persistence_init_d_file_creation.toml * Update defense_evasion_timestomp_sysmon.toml * Update defense_evasion_application_removed_from_blocklist_in_google_workspace.toml * Update missing Tactic tags * Update unit tests to match new tags * Add missing IG tags * Delete okta_threat_detected_by_okta_threatinsight.toml * Update command_and_control_google_drive_malicious_file_download.toml * Update persistence_rc_script_creation.toml * Mass bump * Update persistence_shell_activity_by_web_server.toml * . --------- Co-authored-by: Mika Ayenson <Mika.ayenson@elastic.co> Co-authored-by: Mika Ayenson <Mikaayenson@users.noreply.github.com>
56 lines
1.7 KiB
TOML
56 lines
1.7 KiB
TOML
[metadata]
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creation_date = "2020/08/21"
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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 = "2023/06/22"
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[rule]
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author = ["Elastic"]
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description = """
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Identifies a suspicious managed code hosting process which could indicate code injection or other form of suspicious
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code execution.
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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 Managed Code Hosting Process"
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references = ["https://blog.menasec.net/2019/07/interesting-difr-traces-of-net-clr.html"]
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risk_score = 73
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rule_id = "acf738b5-b5b2-4acc-bad9-1e18ee234f40"
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severity = "high"
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tags = ["Domain: Endpoint", "OS: Windows", "Use Case: Threat Detection", "Tactic: Defense Evasion"]
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type = "eql"
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query = '''
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sequence by process.entity_id with maxspan=5m
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[process where host.os.type == "windows" and event.type == "start" and
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process.name : ("wscript.exe", "cscript.exe", "mshta.exe", "wmic.exe", "regsvr32.exe", "svchost.exe", "dllhost.exe", "cmstp.exe")]
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[file where host.os.type == "windows" and event.type != "deletion" and
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file.name : ("wscript.exe.log",
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"cscript.exe",
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"mshta.exe.log",
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"wmic.exe.log",
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"svchost.exe.log",
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"dllhost.exe.log",
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"cmstp.exe.log",
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"regsvr32.exe.log")]
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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 = "T1055"
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name = "Process Injection"
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reference = "https://attack.mitre.org/techniques/T1055/"
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[rule.threat.tactic]
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id = "TA0005"
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name = "Defense Evasion"
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reference = "https://attack.mitre.org/tactics/TA0005/"
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