Malicious EdgeStepper iptables DNS Redirection for Adversary-in-the-Middle

ATT&CK techniques

Cred Access → Collection

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
- T1557Adversary-in-the-Middle
Discovery
Lateral Movement
Collection
- T1557Adversary-in-the-Middle
C2
Exfiltration
Impact

What it detects

This rule detects iptables NAT PREROUTING rules that redirect outbound DNS traffic on destination port 53, a technique used by the PlushDaemon EdgeStepper implant on compromised network devices. Hijacking DNS at the gateway lets the actor perform adversary-in-the-middle interception and reroute update lookups to attacker infrastructure.

Reporting behind it

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Malicious EdgeStepper iptables DNS Redirection for Adversary-in-the-Middle

Pivot detection · T1557 · 9 related

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