Suspicious SSH Service on Non Standard Port 57722
- Product
- linux
- Category
- network_connection
- Author
- HuntRule
- Published
- 2026-09-10
- Updated
- 2026-09-10
ATT&CK techniques
C2Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
Exfiltration
Impact
What it detects
This rule detects network connections on TCP port 57722 which Salt Typhoon operators used to run a custom SSH daemon for covert remote access to compromised network infrastructure. SSH activity on this uncommon high port is anomalous and can indicate a backdoored SSH service or persistent operator access.
Reporting behind it
Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.
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