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Windows Binary Proxy Execution Mavinject DLL Injection

Splunk Security Content

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Summary
The analytic rule "Windows Binary Proxy Execution Mavinject DLL Injection" is designed to detect malicious use of the mavinject.exe tool for injecting Dynamic Link Libraries (DLLs) into currently running processes. This detection is primarily based on monitoring specific command-line parameters associated with mavinject.exe, such as /INJECTRUNNING and /HMODULE. By leveraging data sourced from Endpoint Detection and Response (EDR) agents, the rule focuses on key events identified by Sysmon and Windows Event Logs, particularly the creation of new processes (EventID 4688). The significance of this detection lies in its ability to identify potential arbitrary code execution, often employed by attackers for deploying malware or maintaining persistence within a compromised environment. The rule employs an advanced search query to match mallwares’ known command-line usage patterns, enhancing the visibility of suspicious activities that may indicate exploitation attempts. If confirmed, such activities may allow unauthorized code execution, privilege escalation, and prolonged access to sensitive systems, representing a critical security threat that organizations must address effectively.
Categories
  • Endpoint
Data Sources
  • Process
  • Windows Registry
  • Application Log
ATT&CK Techniques
  • T1218
  • T1218.013
Created: 2024-11-13