Suspicious DLL Hijack via BugSplatRc64 Sideloading (via image_load)

ATT&CK techniques

Execution → Defense Evasion

Recon
Resource Dev
Initial Access
Execution
- T1574.001DLL
Persistence
- T1574.001DLL
Priv Esc
- T1055Process Injection
- T1574.001DLL
Defense Evasion
- T1055Process Injection
- T1574.001DLL
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects loading of BugSplatRc64.dll from a signed loader named nau.exe used to sideload a Cobalt Strike beacon in the GitHub and social-media delivery campaign. The attacker abuses the search-order of a legitimate application to run their DLL under a trusted process name. Pairing the loader name with the hijacked module distinguishes this from benign crash-reporting usage.

Reporting behind it

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Suspicious DLL Hijack via BugSplatRc64 Sideloading (via image_load)

Pivot detection · T1574.001 · 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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