[New Rule] Potential Secret Scanning via Gitleaks

Author: Aegrah

rules/cross-platform/credential_access_gitleaks_execution.toml

@@ -0,0 +1,87 @@
+[metadata]
+creation_date = "2025/11/28"
+integration = ["endpoint", "windows", "system", "m365_defender", "sentinel_one_cloud_funnel", "crowdstrike", "auditd_manager"]
+maturity = "production"
+updated_date = "2025/11/28"
+
+[rule]
+author = ["Elastic"]
+description = """
+This rule detects the execution of Gitleaks, a tool used to search for high-entropy strings and secrets in code
+repositories, which may indicate an attempt to access credentials.
+"""
+false_positives = [
+    """
+    Gitleaks is a legitimate open-source tool used by security professionals and developers to search for sensitive
+    information, such as passwords, API keys, and other secrets, within code repositories. It is commonly employed
+    during security assessments and code reviews to identify potential vulnerabilities.
+    """,
+]
+from = "now-9m"
+index = [
+    "endgame-*",
+    "logs-crowdstrike.fdr*",
+    "logs-endpoint.events.process-*",
+    "logs-m365_defender.event-*",
+    "logs-sentinel_one_cloud_funnel.*",
+    "logs-system.security*",
+    "logs-windows.forwarded*",
+    "logs-windows.sysmon_operational-*",
+    "winlogbeat-*",
+    "auditbeat-*",
+    "logs-auditd_manager.auditd-*"
+]
+language = "eql"
+license = "Elastic License v2"
+name = "Potential Secret Scanning via Gitleaks"
+note = """
+
+"""
+references = [
+    "https://www.elastic.co/blog/shai-hulud-worm-npm-supply-chain-compromise",
+    "https://socket.dev/blog/shai-hulud-strikes-again-v2",
+]
+risk_score = 47
+rule_id = "f92171ed-a4d3-4baa-98f9-4df1652cb11b"
+severity = "medium"
+tags = [
+    "Domain: Endpoint",
+    "OS: Linux",
+    "OS: Windows",
+    "OS: macOS",
+    "Use Case: Threat Detection",
+    "Tactic: Credential Access",
+    "Data Source: Elastic Endgame",
+    "Data Source: Elastic Defend",
+    "Data Source: Windows Security Event Logs",
+    "Data Source: Microsoft Defender for Endpoint",
+    "Data Source: Sysmon",
+    "Data Source: SentinelOne",
+    "Data Source: Crowdstrike",
+    "Data Source: Auditd Manager",
+    "Resources: Investigation Guide",
+]
+timestamp_override = "event.ingested"
+type = "eql"
+query = '''
+process where event.type == "start" and event.action in  ("exec", "exec_event", "start", "ProcessRollup2", "executed", "process_started") and
+process.name : ("gitleaks.exe", "gitleaks")
+'''
+
+[[rule.threat]]
+framework = "MITRE ATT&CK"
+
+[[rule.threat.technique]]
+id = "T1003"
+name = "OS Credential Dumping"
+reference = "https://attack.mitre.org/techniques/T1003/"
+
+[[rule.threat.technique]]
+id = "T1555"
+name = "Credentials from Password Stores"
+reference = "https://attack.mitre.org/techniques/T1555/"
+
+[rule.threat.tactic]
+id = "TA0006"
+name = "Credential Access"
+reference = "https://attack.mitre.org/tactics/TA0006/"