Medium Severity

Link: Numeric IP obfuscation in URL

Labels

Credential Phishing
Malware/Ransomware
Evasion
URL analysis

Description

Detects inbound messages containing links where the host is a numeric-only IP representation, commonly used to bypass domain-based URL filtering.

References

No references.

Sublime Security
Created May 28th, 2026 • Last updated May 28th, 2026
Feed Source
Sublime Core Feed
Source
GitHub
type.inbound
and any(body.links, regex.icontains(.href_url.url, 'https?://[0-9]{7,12}/.+'))
MQL Rule Console
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Playground

Test against your own EMLs or sample data.

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