OS Credential Dumping: LSA Secrets T1003.004

Events covered

19 catalog events are tagged with this technique by at least one rule.

Authoring guide

Patterns shared across the 23 rules above: which fields they filter on, what specific values they look for, and what they exclude. The catalog normalizes field names across vendors so Sigma's Image, Elastic's process.name, and Splunk's process_name collapse into one row. Each rule contributes at most once per row.

Fields filtered most (39 distinct)

The fields most rules look at when detecting this technique. The How column shows the operators authors use (eq, wildcard, regex_match, match) and how often each appears. Sample values are concrete examples to start from, not an exhaustive list.

Top indicator values (179 distinct)

Specific (field, operator, value) combinations the rules check for, ranked by how many rules under this technique use each one. The Corpus reach column counts how many rules across the entire catalog (any technique) check the same combination. High numbers point to widely-used indicators that are likely noisy on their own; combine them with another condition for useful signal. Blank means the combination is specific to rules under this technique. Click a value to expand the rules under this technique that use it.

Exclusions (18 distinct)

Field/operator/value combinations excluded by rules under this technique (top-level not() clauses), sorted by how many rules exclude each. These are the false-positive paths the community has learned to filter out. A new rule that ignores the high-count entries here will likely fire on the same noisy paths. Click a value to expand the rules under this technique that exclude it.

Rules under this technique

Every rule in the catalog tagged with this technique, grouped by vendor. Click a rule title for its full predicates, exclusions, and indicators.

Sigma 13 rules

• Backdoor introduction via registry permission change through WMI (DAMP)
• Cred Dump Tools Dropped Files
• Credential Dumping Tools Service Execution - Security
• Credential Dumping Tools Service Execution - System
• DPAPI Domain Backup Key Extraction
• DPAPI Domain Master Key Backup Attempt
• Dumping of Sensitive Hives Via Reg.EXE
• HackTool - Credential Dumping Tools Named Pipe Created
• HackTool - Mimikatz Execution
• Mimikatz Use
• Possible Impacket SecretDump Remote Activity
• Possible Impacket SecretDump Remote Activity - Zeek
• PUA - Memory Dump Mount Via MemProcFS

Elastic 5 rules

• Credential Acquisition via Registry Hive Dumping
• Potential Invoke-Mimikatz PowerShell Script
• PowerShell Invoke-NinjaCopy script
• Sensitive Registry Hive Access via RegBack
• Suspicious Remote Registry Access via SeBackupPrivilege

Splunk 3 rules

• Mimikatz (Sysmon)
• Mimikatz (Windows Event Log)
• Windows LSA Secrets NoLMhash Registry

Kusto 2 rules

• DumpGuard NTLM challenge detected
• Suspicious SPN logon from workstation (DumpGuard)