What is Inetinfo.exe

Internet Information Services - Internet Information Services - Microsoft Corporation

File description

Inetinfo.exe with description Internet Information Services is a process file from company Microsoft Corporation belonging to product Internet Information Services.
The file is digitally signed from Microsoft Windows Component Publisher - Microsoft Timestamping Service
We do not recommend removing digitally signed files from Microsoft Windows Component Publisher

What is inetinfo.exe?
Inetinfo.exe, or the IIS Admin Service Helper, is a part of Microsoft Internet Information Services (IIS) that is used for debugging purposes. IIS is Microsoft's server software; however, components such as this have been known to have been installed with other third-party server software.

This executable is not essential to the proper operation of the system. If you are knowingly running IIS, however, do not disable this process, as it will bring your server down. If you are not running IIS or a server that depends on this executable, you can and should disable and uninstall IIS and with it this process.

Dangers of inetinfo
As this is a relatively common legitimate process, it is common for virus writers and spyware vendors to disguise their malware as the genuine one.

Some malicious files may have the same name but be stored somewhere other than in %SystemRoot%\System32. Other malware may use a name that appears similar to it but with slight differences in spelling or with appended digits. The following malware is known to disguise itself as the genuine inetinfo.exe:
  • Trojan.W32.RONTOKBRO (%ApplicationData%)
    • This is a Trojan that includes an SMTP engine such that it can easily spread itself.
There should not be more than one instance this process running at any given time. The presence of multiple instances may be an indicator of a malware infection. If this process is running without any servers running on your machine, your system may be infected.

Common problems
  • Inetinfo prevents any other applications from using common server ports
    • If you are not using IIS, disable the IIS Admin Service Helper service and uninstall any IIS-related software.
    • If you are using IIS, this is by design.
  • This process is using 100% CPU time
    • If you are knowingly running IIS, make sure your SMTP server is not open (go into the IIS Console and check SMTP Virtual Server). If it is, it is possible that your machine is being used as a spam relay.
    • If you are not knowingly running IIS, inetinfo.exe may be continuously trying to connect to localhost. Disable the IIS Admin Service Helper service and uninstall anything related to IIS.

Automatic startup locations

001 Running Processes
002 Autorun registry entries local machine
003 Autorun registry entries Current User
010 Installed services
139 Windows\load
166 HKCU Policies\Explorer\Run
167 HKLM Policies\Explorer\Run

Digital signatures found for this file

    Certificate 
48 Microsoft Windows Component Publisher - Microsoft Timestamping Service
21 Microsoft Windows Publisher - VeriSign Time Stamping Services Signer
12 Microsoft Windows 2000 Publisher - VeriSign Time Stamping Service
11 Microsoft Windows - Microsoft Time-Stamp Service
8 Microsoft Windows XP Publisher (Europe) - VeriSign Time Stamping Service
7 Microsoft Windows Component Publisher - VeriSign Time Stamping Services Signer
6 Microsoft Windows Publisher - VeriSign Time Stamping Service
5 Microsoft Windows XP Publisher - VeriSign Time Stamping Service
1 Microsoft Windows - VeriSign Time Stamping Services Signer
1 Microsoft Windows - Microsoft Timestamping Service

MD5 security rating in our database

45 files (Not yet rated and not signed)
2 files (Not yet rated and digitally signed)
5 files (Safe and not signed)
151 files (Safe and digitally signed)
Some versions of this filename have not yet been checked for safety.
Warning: Some malware might rename itself to inetinfo.exe. Always make sure that your file is from a verified publisher.

User ratings for this file

File rating: Average rating of inetinfo.exe: by 203 files and users.

Application errors

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