This detection rule aims to identify suspicious DNS queries that attempt to contact external service interaction domains. These domains are typically exploited for out-of-band communications that can occur after successful Remote Code Execution (RCE) attacks. By monitoring DNS queries for known malicious domains, this rule facilitates the detection of potential unauthorized activities that thread the security of networks. The selected domains include several that are frequently used by attackers for callback mechanisms, data exfiltration, and other interactions following an initial compromise.