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The public catalogue of detection rules. Every entry carries its source, the identifier it had there, its licence and its ATT&CK mapping.

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LowElastic detection rules

Successful SSH Authentication from Unusual IP Address

This rule leverages the new_terms rule type to detect successful SSH authentications by an IP- address that has not been authenticated in the last 5 days. This behavior may indicate an attacker attempting to gain access to the system using a valid account.

ATT&CK coverage

Initial Access

T1078Valid AccountsAlso under Persistence, Privilege Escalation, and Stealth.291 detections cover this technique

Lateral Movement

T1021Remote Services108 detections cover this technique
- T1021.004SSH 38 detections cover this technique

Detection requirements

Log source category: event_index

Detection logic

Published to signed-in readers

The query as its source wrote it, its canonical form, and the content hash that pins this exact revision.

Provenance

Where this detection came from, and what you may do with it.

At source: Open at source
Written by: Elastic
Licence: Elastic License 2.0Read the licence
Published: Aug 27, 2026
Version: 1