Use Alternate Authentication Material T1550
Adversaries may use alternate authentication material, such as password hashes, Kerberos tickets, and application access tokens, in order to move laterally within an environment and bypass normal system access controls.
Events covered
21 catalog events are tagged with this technique by at least one rule.
Authoring guide
Patterns shared across the 29 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 (50 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 (177 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 (63 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 11 rules
- HackTool - KrbRelayUp Execution
- HackTool - Rubeus Execution
- HackTool - Rubeus Execution - ScriptBlock
- Hacktool Ruler
- Mimikatz Pass-the-hash login
- NTLM Logon
- NTLMv1 Logon Between Client and Server
- Outgoing Logon with New Credentials
- Pass the Hash Activity 2
- Successful Overpass the Hash Attempt
- Uncommon Outbound Kerberos Connection
Elastic 4 rules
- Kerberos Traffic from Unusual Process
- Local Account TokenFilter Policy Disabled
- Potential Kerberos Relay Attack against a Computer Account
- Potential Pass-the-Hash (PtH) Attempt
Splunk 12 rules
- Kerberos TGT Request Using RC4 Encryption
- LocalAccountTokenFilterPolicy Registry Value Modified (PowerShell)
- LocalAccountTokenFilterPolicy Registry Value Modified (Sysmon)
- LocalAccountTokenFilterPolicy Registry Value Modified (Windows Event Log)
- Mimikatz PassTheTicket CommandLine Parameters
- Pass-the-Hash (Windows Event Log)
- Rubeus Command Line Parameters
- Rubeus Kerberos Ticket Exports Through Winlogon Access
- Unknown Process Using The Kerberos Protocol
- Windows AD Suspicious Attribute Modification
- Windows Process With NetExec Command Line Parameters
- Windows Steal Authentication Certificates - ESC1 Authentication