Use icacls to check if the service directory is writable. powershell icacls "C:\Path\To\NSSM\Directory" Use code with caution.
A service is created using NSSM to run under the LocalSystem account. nssm-2.24 privilege escalation
NSSM is a "dual-use" tool often leveraged by advanced threat groups for persistence and elevated access: Use icacls to check if the service directory is writable
or the binary it launches with a malicious executable. When the service restarts (or the system reboots), the malicious code runs with privileges. Notable Examples IBM Robotic Process Automation nssm-2.24 privilege escalation
: Upon service installation or startup, NSSM should scan its own binary path and the target application path. It would flag if high-risk groups (e.g., "Everyone," "Users," or "Authenticated Users") have Write or Full Control permissions.
