Suspicious OAST Callback DNS Query From Next.js Workload

ATT&CK techniques

Initial Access → C2

Recon
Resource Dev
Initial Access
- T1190Exploit Public-Facing Application
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
- T1071.004DNS
Exfiltration
Impact

What it detects

This rule detects DNS queries to out-of-band application security testing callback domains which in-the-wild exploitation of the React2Shell CVE-2025-55182 remote code execution used to confirm code execution from compromised Next.js containers. Anomalous OAST domain lookups originating from an application server strongly indicate active exploitation or interaction-based vulnerability probing.

Reporting behind it

Related detections9 linkedT1190 — drag to rearrange

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Suspicious OAST Callback DNS Query From Next.js Workload

Pivot detection · T1190 · 9 related

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