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Explore published rules with transparent provenance, licensing, and ATT&CK mappings.

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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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MediumElastic detection rules

Rare SMB Connection to the Internet

This rule detects rare internet network connections via the SMB protocol. SMB is commonly used to leak NTLM credentials via rogue UNC path injection.

ATT&CK coverage

Credential Access

T1187Forced Authentication 23 detections cover this technique

T1048Exfiltration Over Alternative Protocol 40 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.

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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

See also

2,066 from Elastic detection rules 3,618 rated medium