Malicious ServiceDll Hijack with QSC Loader DLL
- Product
- windows
- Category
- registry_set
- Author
- HuntRule
- Published
- 2026-05-16
- Updated
- 2026-08-28
ATT&CK techniques
Execution → Defense EvasionRecon
Resource Dev
Initial Access
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact
What it detects
This rule detects a service Parameters ServiceDll value being set to the QSC loader DLLs swprr.dll or rasautosvc.dll. The CloudComputating group hijacked a Windows service to load these DLLs from System32 and execute the QSC multi-plugin framework with service persistence.
Reporting behind it
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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