ATT&CK coverage › Technique
OS Credential Dumping: DCSync T1003.006
Adversaries may attempt to access credentials and other sensitive information by abusing a Windows Domain Controller's application programming interface (API) to simulate the replication process from a remote domain controller using a technique called DCSync.
Events covered
8 catalog events are tagged with this technique by at least one rule.
Authoring guide
Patterns shared across the 12 rules above: which fields they filter on, what specific values they look for, and what they exclude. Field names are normalized 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 (16 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 (74 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.
Common exclusions (7 distinct)
Field/operator/value combinations that rules under this technique routinely exclude (top-level not() clauses). 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.
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 6 rules
- Active Directory Replication from Non Machine Account
- Credential Dumping Tools Service Execution - Security
- Credential Dumping Tools Service Execution - System
- HackTool - Mimikatz Execution
- Mimikatz DC Sync
- Suspicious Get-ADReplAccount
Elastic 3 rules
- FirstTime Seen Account Performing DCSync
- Potential Active Directory Replication Account Backdoor
- Potential Credential Access via DCSync
Splunk 2 rules
- Windows AD Replication Request Initiated by User Account
- Windows AD Replication Request Initiated from Unsanctioned Location