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ThreatFox: SSHDoor IOCs

ioc-hunt HIGH ThreatFox
UrlClickEvents
elf-sshdooriocthreatfox
This rule was pulled from an open-source repository and enriched with AI. Validate in a test environment before deploying to production.
View original rule at ThreatFox →
Retrieved: 2026-09-22T11:00:00Z · Confidence: high

Hunt Hypothesis

This hunt targets the presence of SSHDoor, a backdoor tool that adversaries use to establish persistent remote access and execute commands on compromised Linux hosts. Proactively hunting for these IOCs in Azure Sentinel allows the SOC to identify stealthy footholds that may have been established through initial access vectors, enabling rapid containment before the adversary leverages the backdoor for lateral movement or data exfiltration.

IOC Summary

Malware Family: SSHDoor Total IOCs: 2 IOC Types: url

TypeValueThreat TypeFirst SeenConfidence
urlhxxp://174[.]71[.]237[.]86:1101/sshdpayload_delivery2026-09-22100%
urlhxxp://165[.]73[.]108[.]6:8025//sshdpayload_delivery2026-09-22100%

KQL: Url Hunt

// Hunt for access to known malicious URLs
// Source: ThreatFox - SSHDoor
let malicious_urls = dynamic(["http://174.71.237.86:1101/sshd", "http://165.73.108.6:8025//sshd"]);
UrlClickEvents
| where Url has_any (malicious_urls)
| project Timestamp, AccountUpn, Url, ActionType, IsClickedThrough
| order by Timestamp desc

Required Data Sources

Sentinel TableNotes
UrlClickEventsEnsure this data connector is enabled

References

False Positive Guidance

Original source: https://threatfox.abuse.ch/browse/malware/elf.sshdoor/