Insomniac Security External C2 Framework for Cobalt Strike is a free offensive security tool. AzureC2Relay is a free offensive security tool. Compare features, ratings, integrations, and community reviews side by side to find the best offensive security fit for your security stack.
CST VerdictBased on our analysis of available product data, here is our conclusion:
Red team operators and penetration testers who need to test detection of out-of-band command channels will find value in Insomniac Security External C2 Framework for Cobalt Strike because it lets you inject arbitrary data channels into Cobalt Strike without recompiling the agent. The alpha release supports multiple transport protocols, giving you flexibility to stress-test a target's monitoring for uncommon egress patterns that standard C2 callbacks won't trigger. Skip this if your engagements don't involve testing detection maturity for custom exfiltration routes, or if you need production-hardened stability over experimental capability.
Red teamers and penetration testers running Cobalt Strike campaigns through Azure need AzureC2Relay to hide C2 traffic behind legitimate cloud infrastructure without burning blue team detections on obviously malicious beacon patterns. The tool validates traffic against your Malleable C2 profile before relaying through an Azure Function, meaning only properly authenticated beacons get through; attackers often skip this layer and get caught on the first anomalous request. Skip this if you're not already deeply comfortable with Azure Functions, Malleable C2 profiles, and infrastructure-as-code deployments; the 236 GitHub stars reflect a small, skilled audience rather than a tool that abstracts away operator complexity.
Alpha release of External C2 framework for Cobalt Strike with enhanced data channels.
An Azure Function that validates and relays Cobalt Strike beacon traffic based on Malleable C2 profile authentication.
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Common questions about comparing Insomniac Security External C2 Framework for Cobalt Strike vs AzureC2Relay for your offensive security needs.
Insomniac Security External C2 Framework for Cobalt Strike: Alpha release of External C2 framework for Cobalt Strike with enhanced data channels..
AzureC2Relay: An Azure Function that validates and relays Cobalt Strike beacon traffic based on Malleable C2 profile authentication..
Both serve the Offensive Security market but differ in approach, feature depth, and target audience.
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