WPS Office Exploitation via DLL Hijack

Identifies the load of a remote library by the WPS Office promecefpluginhost.exe executable. This may indicate the successful exploitation of CVE-2024-7262 or CVE-2024-7263 via DLL hijack abusing the ksoqing custom protocol handler.

Rule type: eql

Rule indices:

logs-endpoint.events.library-*
logs-windows.sysmon_operational-*

Severity: high

Risk score: 73

Runs every: 5m

Searches indices from: now-9m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

References:

Tags:

Domain: Endpoint
OS: Windows
Use Case: Threat Detection
Tactic: Initial Access
Tactic: Execution
Data Source: Elastic Defend
Data Source: Sysmon

Version: 1

Rule authors:

Elastic

Rule license: Elastic License v2

Rule query

edit

any where host.os.type == "windows" and process.name : "promecefpluginhost.exe" and
(
 (event.category == "library" and
  ?dll.path :
     ("?:\\Users\\*\\AppData\\Local\\Temp\\wps\\INetCache\\*",
      "\\Device\\Mup\\**", "\\\\*")) or

  ((event.category == "process" and event.action : "Image loaded*") and
  ?file.path :
     ("?:\\Users\\*\\AppData\\Local\\Temp\\wps\\INetCache\\*",
      "\\Device\\Mup\\**", "\\\\*"))
)

Framework: MITRE ATT&CK^TM

Tactic:
- Name: Execution
- ID: TA0002
- Reference URL: https://attack.mitre.org/tactics/TA0002/
Technique:
- Name: Exploitation for Client Execution
- ID: T1203
- Reference URL: https://attack.mitre.org/techniques/T1203/
Tactic:
- Name: Initial Access
- ID: TA0001
- Reference URL: https://attack.mitre.org/tactics/TA0001/
Technique:
- Name: Drive-by Compromise
- ID: T1189
- Reference URL: https://attack.mitre.org/techniques/T1189/

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