Suspicious UAT-8302 DLL Side-Loading via Signed Application Launcher

ATT&CK techniques

Execution → Defense Evasion

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

What it detects

This rule detects the UAT-8302 side-load launchers Yandex.exe or VMtools.exe invoked with the campaign-specific -r and -p:ini arguments that trigger loading of a malicious DLL and its encrypted configuration. Abusing a benign signed application to load attacker code lets the CloudSorcerer implant execute under a trusted process. The paired argument pattern narrows this to malicious side-loading rather than normal use.

Reporting behind it

Related detections9 linkedT1574.001 — drag to rearrange

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Suspicious UAT-8302 DLL Side-Loading via Signed Application Launcher

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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