Modify Authentication Process: Conditional Access Policies T1556.009
Tactics: Defense Impairment, Persistence, Credential Access
Adversaries may disable or modify conditional access policies to enable persistent access to compromised accounts. Conditional access policies are additional verifications used by identity providers and identity and access management systems to determine whether a user should be granted access to a resource.
Authoring guide
Patterns shared across the 13 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 (28 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 (51 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.
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.
Elastic 4 rules
- AWS RDS DB Instance Made Public
- Entra ID Conditional Access Policy (CAP) Modified
- Entra ID External Authentication Methods (EAM) Modified
- Modification or Removal of an Okta Application Sign-On Policy
Kusto 1 rule
Panther 8 rules
- Azure Authentication Methods Policy OIDC Discovery URL Changed
- Crowdstrike IP Allowlist Changed
- Crowdstrike Single IP Allowlisted
- GCP Org or Folder Policy Was Changed Manually
- MongoDB access allowed from anywhere
- MongoDB org membership restriction disabled
- Wiz Update IP Restrictions
- ZIA Insecure Password Settings