Suspicious DNS Query to Interactsh OAST Callback Domains

ATT&CK techniques

Recon → C2

Recon
- T1595.002Vulnerability Scanning
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
- T1071.004DNS
Exfiltration
Impact

What it detects

This rule detects DNS resolutions for Interactsh out-of-band application security testing domains such as oast.pro, oast.site, oast.me, oast.online, oast.fun and oast.live. These domains receive automated Nuclei and Interactsh scanning callbacks used to confirm blind vulnerabilities, so queries from production hosts indicate the host is being probed or has been compromised in a mass-exploitation campaign.

Reporting behind it

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Possible DNS Tunneling via Excessively Long Query Name

Suspicious Nmap Scanner Probe URIs in HTTP Requests (via webserver)

Suspicious DNS Query to Interactsh OAST Callback Domains

Pivot detection · T1071.004 · 9 related

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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