Welcome to the PC Pitstop Process Library. We have an extensive list of the most common processes currently running on PCs. Use this library to inspect the safety of your running processes on a regular basis.

Click here to run our free scan and see if your computer's processes are safe. To find out how to make your computer faster, try running our Free PC Matic Scan.

Search For Processes

Process Name

  

Unknown Unknown
Safe Safe
User Optional User Optional
Unwanted Unwanted
Spyware / Adware Spyware / Adware
Virus Virus


More than one possible match was found; all matches are listed below in order of their prevalence. This only tells you what the file and the correct action might be.

To understand which possibility is actually running on your own system, perform an Overdrive test and then look at the Software|Processes tab.

You may find more information on this process by visiting Process Detail Pages.


Match #1



userinit.exe (userinit.exe)

Percentage of recently scanned PC's with this process running: 0.01%
Average CPU use for this program: 0%
Average RAM for this program: 4 MB


In addition to the file name, userinit.exe, the following version information is used to identify the file. If the file does not match this information, it may be a different file. To ensure the file is absolutely correct, run a free and comprehensive scan.

Vendor contains:Microsoft
Product contains:Microsoft

To view version information with Windows Explorer, right-click the file and click Properties, Version.



Detailed Description and/or Removal Instructions

http://support.microsoft.com/kb/892893


Win Patrol

userinit.exe - This is a key process to the Windows operating system. It manages the different start up sequences on boot-up. It establishes network connections and the Windows shell. Userinit.exe is important to the stable and secure operation of your computer and should not be terminated. The correct filepath is C:\Windows\System32\Userinit.exe,. Note the comma at the end of the file path is required. Please note that userinit.exe is also listed as a trojan. This threat can go under as many as 10 different file names. It has been classified as Haxdoor.Fam, Win32.Bagle.M@mm, and Worm.Win32.Feebs.df

userinit.exe  is an essential part of Windows and required for Windows to work properly. It should never be disabled.

PC Pitstop recommends WinPatrol Plus for monitoring all of the background activity on your PC. WinPatrol Plus provides an easy to understand descriptions of over 15,000 processes and programs.


MD5 hashes is the way that computers can define the uniqueness of a file. Anti malware vendors frequently use this technique to detect and clean malware. It is common for a program to have multiple MD5 hashes as the developers create newer versions of the program. For the program called userinit.exe, we have detected more than 10 different MD5 hashes. Click on a hash to research the hash in Google.

Program Name MD5 Count
userinit.exe> 10
MD5 Hashes
# MD5 Size
1 0xd6fc61a4f0e2c0a79ac0f46b9d205fe1 14542 bytes
2 0xe2f70e6b3700201b59c0cb176de275f5 24576 bytes
3 0xe931e0a2b8bf0019db902e98d03662cb 22016 bytes
4 0x39b1ffb03c2296323832acbae50d2aff 24576 bytes
5 0xde7a0ee4a6a28e6dfe3118eb22468da6 24576 bytes
MD5 Hashes
# MD5 Size
6 0xe7fa45622ea5f16c9bc7379591262b25 26112 bytes
7 0x4f4d622074ce2545ca44405be7cbf4ca 68856 bytes
8 0xcaed6da103f0d57d87c627bb18bca4fe 70144 bytes
9 0x76c24631dce6a6b4f13e82246394445c 72704 bytes
10 0x78a5351f732f7d019ac982ecb97897fc 71680 bytes

Match #2



userinit.exe (Win32/Satiloler.A)

This program has not been seen on any systems tested at PC Pitstop in the past week.


The file name alone identifies this program.


Vendor or Distributor's Web Site

http://search.ca.com/search/ca?style=en&search_button=Search&qt=userinit.exe&col=


Detailed Description and/or Removal Instructions

http://www.ca.com/securityadvisor/virusinfo/virus.aspx?id=58501


PC Pitstop PC Matic

userinit.exe - According to CA:

Win32/Satiloler.A is a backdoor trojan that allows an attacker to collect information from a user's system.

userinit.exe is a VIRUS. Stop all work until the virus is removed or you run the risk of spreading the virus to other people. Worse yet, the virus may be doing harm to your computer and your information.

userinit.exe is a virus and should be removed immediately to avoid doing further harm. PC Pitstop recommends PC Matic in these types of situations.


MD5 hashes is the way that computers can define the uniqueness of a file. Anti malware vendors frequently use this technique to detect and clean malware. It is common for a program to have multiple MD5 hashes as the developers create newer versions of the program. For the program called userinit.exe, we have detected more than 10 different MD5 hashes. Click on a hash to research the hash in Google.

Program Name MD5 Count
userinit.exe> 10
MD5 Hashes
# MD5 Size
1 0x9a7f725a8961ea7a16a597a7ca126121 112128 bytes
2 0xba17d26745f617d02ad49f48004395f4 121856 bytes
3 0x393ea54e69df326ac1e25e4e976a92df 33056 bytes
4 0x213eb9e102049cd43db47de02c1e3aa5 82432 bytes
5 0x78773f3ee7fcf1690d2f9ff6180a26b1 32120 bytes
MD5 Hashes
# MD5 Size
6 0x81c199973a5576af6afda78012e53af3 82432 bytes
7 0x7d30c0f3dfa91420d4d8ad46aa8ef783 82432 bytes
8 0x5a1a0fc00c570e1b87e84df80ea5d43a 82432 bytes
9 0xfc3e63758ce17f865983a9cbf49d70ac 82432 bytes
10 0xb5bfcf3c4dfe120d2bb0f9736a17c065 57344 bytes


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Tips from the PitCrew

Tips from the Pit Crew

Every process running on your computer takes up CPU cycles and valuable memory. For optimal PC performance and resource utilization, you should be aware of every process on your computer. PC Pitstop designed this process library to help you know which processes are worthwhile and others that slow system performance.

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Important Note

A file name alone may not be enough for positive identification. PC Pitstop's Overdrive tests and spyware scan use information such as the company name, product name, or install directory.

If you are unable to identify a file, ask about it in our forums after running our full tests.