credential_access_remote_sam_secretsdump.toml

[metadata]
creation_date = "2022/03/01"
maturity = "production"
min_stack_comments = "The field `file.Ext.header_bytes` was not introduced until 7.15"
min_stack_version = "7.15.0"
updated_date = "2022/03/01"

[rule]
author = ["Elastic"]
description = """
Identifies remote access to the registry to potentially dump credential data from the SAM registry hive in preparation
for credential access and privileges elevation.
"""
from = "now-9m"
index = ["winlogbeat-*", "logs-system.*", "logs-endpoint.events.*"]
language = "eql"
license = "Elastic License v2"
name = "Potential Remote Credential Access via Registry"
note = """## Config

This rule uses Elastic Endpoint file creation and System Integration events for correlation. Both data should be
collected from the host for this detection to work.
"""
references = ["https://github.com/SecureAuthCorp/impacket/blob/master/examples/secretsdump.py"]
risk_score = 73
rule_id = "850d901a-2a3c-46c6-8b22-55398a01aad8"
severity = "high"
tags = ["Elastic", "Host", "Windows", "Threat Detection", "Lateral Movement", "Credential Access"]
timestamp_override = "event.ingested"
type = "eql"

query = '''
sequence by host.id, user.id with maxspan=1m
 [authentication where
   event.outcome == "success" and
   winlog.logon.type == "Network" and not user.name == "ANONYMOUS LOGON" and
   not user.domain == "NT AUTHORITY" and source.ip != "127.0.0.1" and source.ip !="::1"]
 [file where event.action == "creation" and process.name : "svchost.exe" and
  file.Ext.header_bytes : "72656766*" and user.id : "S-1-5-21-*" and file.size >= 30000]
'''


[[rule.threat]]
framework = "MITRE ATT&CK"
[[rule.threat.technique]]
name = "OS Credential Dumping"
id = "T1003"
reference = "https://attack.mitre.org/techniques/T1003/"
[[rule.threat.technique.subtechnique]]
name = "Security Account Manager"
id = "T1003.002"
reference = "https://attack.mitre.org/techniques/T1003/002/"



[rule.threat.tactic]
name = "Credential Access"
id = "TA0006"
reference = "https://attack.mitre.org/tactics/TA0006/"
[[rule.threat]]
framework = "MITRE ATT&CK"
[[rule.threat.technique]]
name = "Remote Services"
id = "T1021"
reference = "https://attack.mitre.org/techniques/T1021/"


[rule.threat.tactic]
name = "Lateral Movement"
id = "TA0008"
reference = "https://attack.mitre.org/tactics/TA0008/"