Ross Wolf
5fcece8416
Co-Authored-By: Brent Murphy <56412096+bm11100@users.noreply.github.com> Co-Authored-By: Craig Chamberlain <randomuserid@users.noreply.github.com> Co-Authored-By: David French <56409778+threat-punter@users.noreply.github.com> Co-Authored-By: Derek Ditch <dcode@users.noreply.github.com> Co-Authored-By: Justin Ibarra <brokensound77@users.noreply.github.com>
56 lines
1.5 KiB
TOML
56 lines
1.5 KiB
TOML
[metadata]
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creation_date = "2020/04/23"
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ecs_version = ["1.4.0"]
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maturity = "production"
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updated_date = "2020/04/23"
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[rule]
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author = ["Elastic"]
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description = """
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An adversary may add the setuid bit to a file or directory in order to run a file with the privileges of the owning
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user. An adversary can take advantage of this to either do a shell escape or exploit a vulnerability in an application
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with the setuid bit to get code running in a different user’s context. Additionally, adversaries can use this mechanism
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on their own malware to make sure they're able to execute in elevated contexts in the future.
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"""
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index = ["auditbeat-*"]
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language = "lucene"
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license = "Elastic License"
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max_signals = 33
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name = "Setuid Bit Set via chmod"
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risk_score = 21
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rule_id = "8a1b0278-0f9a-487d-96bd-d4833298e87a"
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severity = "low"
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tags = ["Elastic", "Linux"]
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type = "query"
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query = '''
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event.action:(executed OR process_started) AND process.name:chmod AND process.args:(u+s OR /4[0-9]{3}/) AND NOT user.name:root
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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 = "T1166"
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name = "Setuid and Setgid"
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reference = "https://attack.mitre.org/techniques/T1166/"
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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 = "T1166"
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name = "Setuid and Setgid"
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reference = "https://attack.mitre.org/techniques/T1166/"
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[rule.threat.tactic]
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id = "TA0004"
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name = "Persistence"
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reference = "https://attack.mitre.org/tactics/TA0004/"
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