shashank-elastic
108 lines
3.1 KiB
TOML
108 lines
3.1 KiB
TOML
[metadata]
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bypass_bbr_timing = true
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creation_date = "2023/07/13"
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integration = ["endpoint"]
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maturity = "production"
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updated_date = "2024/05/21"
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[rule]
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author = ["Elastic"]
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building_block_type = "default"
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description = """
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This rule identifies the execution of commands that enumerates account or group information. Adversaries may use
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built-in applications to get a listing of local system or domain accounts and groups.
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"""
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from = "now-9m"
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index = ["logs-endpoint.events.process-*"]
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language = "eql"
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license = "Elastic License v2"
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name = "Windows Account or Group Discovery"
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risk_score = 21
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rule_id = "089db1af-740d-4d84-9a5b-babd6de143b0"
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severity = "low"
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tags = [
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"Domain: Endpoint",
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"OS: Windows",
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"Use Case: Threat Detection",
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"Tactic: Discovery",
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"Rule Type: BBR",
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"Data Source: Elastic Defend",
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]
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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 host.os.type == "windows" and event.type == "start" and
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(
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(
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(
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(process.name : "net.exe" or process.pe.original_file_name == "net.exe") or
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(
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(process.name : "net1.exe" or process.pe.original_file_name == "net1.exe") and
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not process.parent.name : "net.exe"
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)
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) and process.args : ("accounts", "group", "user", "localgroup") and not process.args : "/add"
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) or
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(process.name:("dsquery.exe", "dsget.exe") and process.args:("*members*", "user")) or
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(process.name:"dsquery.exe" and process.args:"*filter*") or
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process.name:("quser.exe", "qwinsta.exe", "PsGetSID.exe", "PsLoggedOn.exe", "LogonSessions.exe", "whoami.exe") or
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(
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process.name: "cmd.exe" and
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(
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process.args : "echo" and process.args : (
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"%username%", "%userdomain%", "%userdnsdomain%",
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"%userdomain_roamingprofile%", "%userprofile%",
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"%homepath%", "%localappdata%", "%appdata%"
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) or
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process.args : "set"
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)
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)
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) and not process.parent.args: "C:\\Program Files (x86)\\Microsoft Intune Management Extension\\Content\\DetectionScripts\\*.ps1"
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and not process.parent.name : "LTSVC.exe" and not user.id : "S-1-5-18"
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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 = "T1069"
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name = "Permission Groups Discovery"
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reference = "https://attack.mitre.org/techniques/T1069/"
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[[rule.threat.technique.subtechnique]]
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id = "T1069.001"
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name = "Local Groups"
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reference = "https://attack.mitre.org/techniques/T1069/001/"
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[[rule.threat.technique.subtechnique]]
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id = "T1069.002"
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name = "Domain Groups"
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reference = "https://attack.mitre.org/techniques/T1069/002/"
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[[rule.threat.technique]]
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id = "T1087"
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name = "Account Discovery"
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reference = "https://attack.mitre.org/techniques/T1087/"
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[[rule.threat.technique.subtechnique]]
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id = "T1087.001"
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name = "Local Account"
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reference = "https://attack.mitre.org/techniques/T1087/001/"
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[[rule.threat.technique.subtechnique]]
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id = "T1087.002"
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name = "Domain Account"
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reference = "https://attack.mitre.org/techniques/T1087/002/"
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[[rule.threat.technique]]
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id = "T1201"
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name = "Password Policy Discovery"
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reference = "https://attack.mitre.org/techniques/T1201/"
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[rule.threat.tactic]
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id = "TA0007"
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name = "Discovery"
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reference = "https://attack.mitre.org/tactics/TA0007/"
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