Valid Accounts: Domain Accounts T1078.002

Events covered

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

Authoring guide

Patterns shared across the 28 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 (37 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 (116 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 (17 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 6 rules

• Account renamed to admin (or likely) account to evade defense
• Admin User Remote Logon
• DMSA Link Attributes Modified
• DMSA Service Account Created in Specific OUs - PowerShell
• Malicious Usage Of IMDS Credentials Outside Of AWS Infrastructure
• New DMSA Service Account Created in Specific OUs

Elastic 15 rules

• Access to a Sensitive LDAP Attribute
• AdminSDHolder Backdoor
• AdminSDHolder SDProp Exclusion Added
• Delegated Managed Service Account Modification by an Unusual User
• dMSA Account Creation by an Unusual User
• First Time Seen Account Performing DCSync
• Kerberos Pre-authentication Disabled for User
• Potential Credential Access via DCSync
• Potential Privileged Escalation via SamAccountName Spoofing
• Rare User Logon
• Remote Computer Account DnsHostName Update
• Spike in Special Logon Events
• Spike in Successful Logon Events from a Source IP
• Unusual Windows User Privilege Elevation Activity
• Unusual Windows Username

Splunk 6 rules

• Detect Excessive Account Lockouts From Endpoint
• Suspicious Computer Account Name Change
• Suspicious Kerberos Service Ticket Request
• Suspicious Ticket Granting Ticket Request
• Windows Group Policy Object Created
• Windows PowerView AD Access Control List Enumeration

Kusto 1 rule

• High-Risk Cross-Cloud User Impersonation