--- name: detecting-mimikatz-execution-patterns description: Detect Mimikatz execution through command-line patterns, LSASS access signatures, binary indicators, and in-memory detection of known modules. domain: cybersecurity subdomain: threat-hunting tags: - threat-hunting - mitre-attack - mimikatz - credential-dumping - edr - t1003 - proactive-detection version: '1.0' author: mahipal license: Apache-2.0 d3fend_techniques: - Execution Isolation - Process Termination - Hardware-based Process Isolation - Web Session Access Mediation - Process Suspension nist_csf: - DE.CM-01 - DE.AE-02 - DE.AE-07 - ID.RA-05 --- # Detecting Mimikatz Execution Patterns ## When to Use - When proactively hunting for indicators of detecting mimikatz execution patterns in the environment - After threat intelligence indicates active campaigns using these techniques - During incident response to scope compromise related to these techniques - When EDR or SIEM alerts trigger on related indicators - During periodic security assessments and purple team exercises ## Prerequisites - EDR platform with process and network telemetry (CrowdStrike, MDE, SentinelOne) - SIEM with relevant log data ingested (Splunk, Elastic, Sentinel) - Sysmon deployed with comprehensive configuration - Windows Security Event Log forwarding enabled - Threat intelligence feeds for IOC correlation ## Workflow 1. **Formulate Hypothesis**: Define a testable hypothesis based on threat intelligence or ATT&CK gap analysis. 2. **Identify Data Sources**: Determine which logs and telemetry are needed to validate or refute the hypothesis. 3. **Execute Queries**: Run detection queries against SIEM and EDR platforms to collect relevant events. 4. **Analyze Results**: Examine query results for anomalies, correlating across multiple data sources. 5. **Validate Findings**: Distinguish true positives from false positives through contextual analysis. 6. **Correlate Activity**: Link findings to broader attack chains and threat actor TTPs. 7. **Document and Report**: Record findings, update detection rules, and recommend response actions. ## Key Concepts | Concept | Description | |---------|-------------| | T1003.001 | LSASS Memory | | T1003.006 | DCSync | | T1558.003 | Kerberoasting | | T1558.001 | Golden Ticket | ## Tools & Systems | Tool | Purpose | |------|---------| | CrowdStrike Falcon | EDR telemetry and threat detection | | Microsoft Defender for Endpoint | Advanced hunting with KQL | | Splunk Enterprise | SIEM log analysis with SPL queries | | Elastic Security | Detection rules and investigation timeline | | Sysmon | Detailed Windows event monitoring | | Velociraptor | Endpoint artifact collection and hunting | | Sigma Rules | Cross-platform detection rule format | ## Common Scenarios 1. **Scenario 1**: Standard sekurlsa::logonpasswords credential dump 2. **Scenario 2**: PowerShell Invoke-Mimikatz reflective loading 3. **Scenario 3**: DCSync from non-DC host 4. **Scenario 4**: Golden ticket creation for persistence ## Output Format ``` Hunt ID: TH-DETECT-[DATE]-[SEQ] Technique: T1003.001 Host: [Hostname] User: [Account context] Evidence: [Log entries, process trees, network data] Risk Level: [Critical/High/Medium/Low] Confidence: [High/Medium/Low] Recommended Action: [Containment, investigation, monitoring] ```