Malicious WPS Office ksoqing Protocol Handler Exploitation via Process Creation

ATT&CK techniques

Execution

Recon
Resource Dev
Initial Access
Execution
- T1203Exploitation for Client Execution
- T1204.002Malicious File
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects promecefpluginhost.exe launched with a ksoqing:// argument, the custom URI handler that APT-C-60 abuses to achieve arbitrary code execution through WPS Office vulnerabilities. A weaponized document triggers this handler to load attacker code without user interaction beyond opening the file. This indicates active exploitation and downloader delivery.

Reporting behind it

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Malicious WPS Office ksoqing Protocol Handler Exploitation via Process Creation

Pivot detection · T1204.002 · 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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