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Computer Viruses

Computer viruses are harmful pieces of software which can reproduce themselves and automatically spread to other computers and networks. Questions about computer virus techniques and specific computer viruses belong here.

5,673 Questions

How do you find and remove Trojan clicker n virus?

Download and run firefox to protect your computer from future spyware attacks and pop ups which are coming in through internet explorer (Trojan downloaders, win32 ).Browser attacks aren't easy to spot because they piggyback on legitimate traffic that doesn't exhibit many obvious warning signs

1. Run Deckard's System Scanner (DSS)

2. Run the vundo and combo fix

3. Run Malwarebytes Anti-Malware

4. Run the anti spyware removal programs spybot

5 Run Superantispyware

6. Run a complete scan with free curing utility Dr.Web CureIt!

ScanSpyware can help you to detect and remove Trojan-Clicker. ScanSpyware malware database updates are released daily, which can be installed automatically as well as manually from our website.

you can simply update these antivirus softwares installed inyour compute and scan your computer with these antivirus for this Virus .

How do you get rid of Trojan horse secthought g?

You need to run these 6 essential steps to remove all the spyware on your computer.

1. Run Deckard's System Scanner (DSS)

2. Run the vundo and combo fix

3. Run Malwarebytes Anti-Malware

4. Run the anti spyware removal programs spybot

5 Run Superantispyware

6. Run a complete scan with free curing utility Dr.Web CureIt!

Install threat fire which will enhance your antivirus protection

You can get rid of this Trojan horse , by following these steps .

1 Download and intall the Malwarebytes on your computer .

2 Update your Malwarebytes .

3 Scan your computer for all the malwares in your computer .

4 Remove all the malwares , found while scanning with the malwarebytes .

5 Restart your computer ,

I'm no computer whiz, but I have the free downloaded version of AVG virus scan. My computer at work had this virus and it was healed after the anti virus program ran.Go here to try it. Or type AVG in a Google search. good luck. grisoft.com

How do you get rid of Trojan viruses delupdat exe sui exe m3tsp8 dll?

Download and run Firefox to protect your computer from future spyware attacks and pop ups which are coming in through internet explorer (Trojan downloaders, win32 ).Browser attacks aren't easy to spot because they piggyback on legitimate traffic that doesn't exhibit many obvious warning signs

1. Run Deckard's System Scanner (DSS)

2. Run the vundo and combo fix

3. Run Malwarebytes Anti-Malware

4. Run the anti spyware removal programs spybot

5 Run Superantispyware

6. Run a complete scan with free curing utility Dr.Web CureIt!

I've found these a problem myself -my virus checker gets rid of them, but they pop back. A Google search took me to http://www.2-spyware.com/file-sui-exe.html which offers some free software to find 'Spyware' - since none of the antivirus sites I've looked at have anything to say about it. I haven't yet downloaded it yet, so I can't tell you if it works, but it is a possible option! 1. Delete the folder c:\program files\common files\updater and all files in it.

2. Run regedit (Run Window). Drill into HKEY_LOCAL_MACHINE, SOFTWARE, MICROSOFT, WINDOWS, CURRENT VERSION, RUN folder. Remove the entry for "updater.exe".

Doing both of these steps will prevent the trojan from reinfecting your PC.

In addition to the updater directory in c:\program files\common files\, I found c:\updaterInstall_112.exe as being apparently responsible for creating the updater directory. Delete this .exe file also. Just found that if you scan with Norton it will find these files, sui.exe , wupdater.exe ect. and before telling Norton to erase them just press ctrl-alt-delete to access the task manager an in the processes tab , just highlight wupdater.exe and hit stop process. It will stop it letting the chance to Norton to erase it.

The reason Norton cannot delete them is because it is running so can't be deleted.

Do the same with other.exe files you see in Norton scan and when all of them has been stopped, you can tell Norton to delete them and it will.

Try the following programs. They will stop all unwanted stuff from getting on your pc- I went to www.webattack.com and found a way to remove it by doing the following. I clicked on green link at the top of the page stating "FREEWARE", then clicked on virus tools/or you can search on that site for this program - "Avast home edition". It is the best freeware program, that i have ever used and removed the virus in no time. The Funweb A is a Trojan horse virus, and when Avast picked it up was going under another name - I think that's why everybody have difficulty in removing it, and can't find anything under funweb A because it is going under another name. Avast has also detected and removed 2 other virus infected files on my PC! It is important to do a live update of avast virus definitions and to set program to run a full system scan. Do download the full free home edition and not just the computer cleaner. It's AMAZING! Thank you so much Avast! Two programs going really well with Avast and also freeware on the same site is Ad-Aware spy detector and Zone Alarm firewall. I have all three and they work together like magic! Try it, you won't look back! I can confirm that Avast has picked up these trojans and another on one of my PCs despite me thinking I was fully defended. It seems to be considerably better than Norton although its not as user friendly to be honest. If you are a half way experienced user you should be fine with it, and for home use it's free! You can get rid of this trojan viruses delupdat exe sui exe m3tsp8 dll by following these steps .

1 Download and intall the Malwarebytes on your computer.

2 Update your Malwarebytes .

3 Scan your computer for all the malwares in your computer.

4 Remove all the malware found while scanning with the malwarebytes.

5 Restart your computer.

You can take care of your problem with MalwareBytes at best. Just run a simple scan and you should have no problems. In the future however be very careful when downloading freeware. In order to sustain themselves, developers often overlook various threats bundled with their software.

How do you get rid of Trojans if AVG says 'action failed'?

1. Download and run firefox to protect your computer from future spyware attacks and pop ups which are coming in through internet explorer (Trojan downloaders, win32 ).Browser attacks aren't easy to spot because they piggyback on legitimate traffic that doesn't exhibit many obvious warning signs

http://securitynewsfromthenet.blogspot.com/2007/05/spyware-fighter-essentials.HTML

2. Run the vundo and combo fix http://securitynewsfromthenet.blogspot.com/2007/05/vundofix-and-combo-fix.HTML

3. Run Malwarebytes Anti-Malware

http://securitynewsfromthenet.blogspot.com/2008/03/malwarebytes-anti-malware-105.HTML

4. Run the anti spyware remove programs spybot http://securitynewsfromthenet.blogspot.com/2007/03/spybot-search-and-destroy-spyware-and.HTML and superantispyware http://securitynewsfromthenet.blogspot.com/2007/04/superantispyware-home-edition-free.HTML to get rid of the nasties

5. Run a complete scan with free curing utility Dr.Web CureIt!

http://securitynewsfromthenet.blogspot.com/2008/05/dr-web-cureit.HTML

All Trojan horses are hidden files, in order to get at them you will need to go to Start /Control Panel /Folder Options (click the View tab)and uncheck both the *Hide file extension for known file types & *Hide protected operating system files (Recommended)-boxes, then OK yourself out. Then you will need to restart your computer and go into SafeMode by HOLDING the F8 key DOWN -(at bootup - after the first screen info - be quick!) and choose SafeMode. [You have to use your keyboard when you're in SafeMode - the keys to use are Ctrl/Alt/Delete (to exit the Help and Support screen) - Tab/Arrow keys/ Pageup/Pagedown/ the Window key(between Ctrl & Alt) & Enter] So, from the DeskTop screen press the Window key to get Start/ arrow up to Search/ arrow right to For Files or Folders and type up the NAME OF THE FILE & EXT (not for example horse.winshow.V) but the actual name of the file, which would have shown up on your anti-virus software. To delete this file from here just press Page Up to highlight the file and then delete. To get out of Search -Alt F/ arrow down to Close and press Enter. Press the Window key to shutdown and restart your computer.

It will be safe to empty your Recycle Bin in the Normal mode where you can use your mouse.

I have had 4 Trojan horses on my C drive and kinda figured out the above method a week ago. After unchecking the hidden files boxes I deleted the Temp file from the _Restore folder (as these keep putting the same files back into your system), then went to SafeMode to delete what virus files that were still there. My computer is now absolutely FREE of these pests!

hope this helps...Phyl

PS. I also have AVG 6.0 (the free one) & also the Ad-aware 6 and I use them every day as my kids love to play games from the Internet.

I did all the above except when I tried to delete it, it said file cannot be deleted, access denied, source may bein use.

How do you get rid of lsdf3 dll Download Trojan virus and system32 dll Trojan KillAV if Norton and Trojan removal tools will not help?

You need to run these 5 essential steps to remove all the spyware on your computer.

1. Run Deckard's System Scanner (DSS)

2. Run Malwarebytes Anti-Malware

3. Run the anti spyware removal programs spybot

4 Run Superantispyware

5. Run a complete scan with free curing utility Dr.Web CureIt!

Install threat fire which will enhance your antivirus protection

Norton is junk. I fix computer every day and take out thousands of viruses and what I commonly see is Norton on the computer. That tell me that Norton is not working at all. Norton has lot of problem because it lives on your machine. New viruses come out by the second and Norton could not keep up with the update with its long distribution line and traffic jam up.

Where do I go to find the hidden files? 1. doesn't tell me enough about what window to be in to follow the instructions. Thank you

Go to the Start tab, Click it. Go to the control panel. On the tool bar click the tools tab, and find the folder options. click the folder options. Select "Show all hidden files". That should do it. When you are done fixing your PC, go back and select to hide folders and files.

How do you get rid of Trojan horse Comet C and Comet B?

Download and run firefox to protect your computer from future spyware attacks and pop ups which are coming in through internet explorer (Trojan downloaders, win32 ).Browser attacks aren't easy to spot because they piggyback on legitimate traffic that doesn't exhibit many obvious warning signs

1. Run Deckard's System Scanner (DSS)

2. Run the vundo and combo fix

3. Run Malwarebytes Anti-Malware

4. Run the anti spyware removal programs spybot

5 Run Superantispyware

6. Run a complete scan with free curing utility Dr.Web CureIt!

Comet.B. In winXP home OS the only way I have established at the moment is to disable system restore, drastic as is sounds downright dangerous if you mess around with win. systems as I do. Go to control panel then performance and maintenance click system then click system restore tab tick check box to turn off. Try running avg or similar again and see how it goes. i have also explored the system volume information folder ((hidden) which was empty. see www.theeldergeek.com he's quite clever.

How do you remove a virus called siboCo B in C Documents and Settings?

Download and run firefox to protect your computer from future spyware attacks and pop ups which are coming in through internet explorer (Trojan downloaders, win32 ).Browser attacks aren't easy to spot because they piggyback on legitimate traffic that doesn't exhibit many obvious warning signs

1. Run Deckard's System Scanner (DSS)

2. Run the vundo and combo fix

3. Run Malwarebytes Anti-Malware

4. Run the anti spyware removal programs spybot

5 Run Superantispyware

6. Run a complete scan with free curing utility Dr.Web CureIt!

Removing the siboCo VirusHere are recommendations from FAQ Farmers:
  • I had the same virus detected by AVG. It started as siboco.b.. I removed it and it than reappeared as siboco.b, but it could not be removed. I ran this software a2 and it seems to have removed this. The software can be downloaded from www.emsisoft.com.
  • Try the following programs-they will stop all unwanted stuff from getting on your PC. I went to www.webattack.com and found a way to remove it by doing the following: clicked on green link at the top of the page stating "FREEWARE", then clicked on virus tools/or you can search on that site for this program-"Avast home edition". It is the best freeware program that I have ever used and removed the virus in no time. The Funweb A is a Trojan horse virus and when Avast picked it up was under another name. I think that is why everybody has difficulty removing it and can't find anything under funwe A, because it is going under another name. Avast has also detected and removed 2 other virus infected files on my PC! It is important to do a live update of avast virus deff and to set program to run a full system scan. Do download the full free home adition and not just the computer cleaner. It's AMAZING.

You can remove this computer worm by following these steps .

1 Download and intall the Malwarebytes on your computer .

2 Update your Malwarebytes .

3 Scan your computer for all the malwares in your computer .

4 Remove all the malwares , found while scanning with the malwarebytes .

5 Restart your computer .

How do you get rid of a virus that links highlighted or underlined words to searchassistant net dnserror htm?

You need to run these 6 essential steps to remove all the spyware on your computer.

1. Run Deckard's System Scanner (DSS)

2. Run the vundo and combo fix

3. Run Malwarebytes Anti-Malware

4. Run the anti spyware removal programs spybot

5 Run Superantispyware

6. Run a complete scan with free curing utility Dr.Web CureIt!

Install threat fire which will enhance your antivirus protection

How do you remove Trojan Horse Clicker AJ?

Download and run firefox to protect your computer from future spyware attacks and pop ups which are coming in through internet explorer (Trojan downloaders, win32 ).Browser attacks aren't easy to spot because they piggyback on legitimate traffic that doesn't exhibit many obvious warning signs

1. Run Deckard's System Scanner (DSS)

2. Run the vundo and combo fix

3. Run Malwarebytes Anti-Malware

4. Run the anti spyware removal programs spybot

5 Run Superantispyware

6. Run a complete scan with free curing utility Dr.Web CureIt!

Try to do free online scan from: pandasoftware Good luck.

Try the following programs-they will stop all unwanted stuff from getting on your PC-I went to www.webattack.com and found a way to remove it by doing the following-clicked on green link at the top of the page stating "FREEWARE",then clicked on virus tools/or you can search on that site for this program-"Avast home edition".It is the best freeware program,that i have ever used and removed the virus in no time.The Funweb A is a Trojan horse virus,and when Avast picked it up was goung under another name-i think that's why everybody have difficulty in removing it,and cant find anything under funwe A ,coz it is going under another name.Avast has also detected and removed 2 other virus infected files on my PC!It is important to do a live update of avast virus deff and to set program to run a full system scan.Do download the full free home adition and not just the computer cleaner.Its AMAZING and kicks budd! : )Thank you so much Avast!!!!Two programs going really well with Avast and also freeware on the same site is Ad-Aware spy detector and Zone Alarm firewall.I have all three and they work together like magic!: )GREAT STUFF!!!!Try it,you wont look back!

eYou can remove this by downloading and installing Malware bytes ,update it and scan your computer for Trojan horse or malwares in your computer .

How do you remove the 'IQ Test' ad from your browser's Tools menu?

Try the following programs-they will stop all unwanted stuff from getting on your PC-I went to www.webattack.com and found a way to remove it by doing the following-clicked on green link at the top of the page stating "FREEWARE",then clicked on virus tools/or you can search on that site for this program-"Avast home edition".It is the best freeware program,that i have ever used and removed the virus in no time.The Funweb A is a Trojan horse virus,and when Avast picked it up was goung under another name-i think that's why everybody have difficulty in removing it,and cant find anything under funwe A ,coz it is going under another name.Avast has also detected and removed 2 other virus infected files on my PC!It is important to do a live update of avast virus deff and to set program to run a full system scan.Do download the full free home adition and not just the computer cleaner.Its AMAZING and kicks budd! : )Thank you so much Avast!!!!Two programs going really well with Avast and also freeware on the same site is Ad-Aware spy detector and Zone Alarm firewall.I have all three and they work together like magic!: )GREAT STUFF!!!!Try it,you wont look back!

How do you get rid of Trojan horse c restore temp A0024508 cpy?

You need to run these 6 essential steps to remove all the spyware on your computer.

1. Run Deckard's System Scanner (DSS)

2. Run the vundo and combo fix

3. Run Malwarebytes Anti-Malware

4. Run the anti spyware removal programs spybot

5 Run Superantispyware

6. Run a complete scan with free curing utility Dr.Web CureIt!

Install threat fire which will enhance your antivirus protection

Update ur Antivirus.or download the Stinger ie latest one.also u visit the site of Symantec and u will get the all details for removing the all type of trojans.

You can get rid of this Trojan horse c restore temp A0024508 cpy by following these steps .

1 Download and intall the Malwarebytes on your computer .

2 Update your Malwarebytes .

3 Scan your computer for all the malwares in your computer .

4 Remove all the malwares , found while scanning with the malwarebytes .

5 Restart your computer .

What is W32 Funweb A dl virus and how do you get rid of it?

1. Run Deckard's System Scanner (DSS)

2. Run the vundo and combo fix

3. Run Malwarebytes Anti-Malware

4. Run the anti spyware removal programs spybot

5 Run Superantispyware

6. Run a complete scan with free curing utility Dr.Web CureIt!

  • Use F-prot to remove it. (f-prot.com - appears to be a very robust virus software)
  • Go to webattack.com to remove it by doing the following: click on green link at the top of the page stating "FREEWARE",t hen clicked on virus tools/or you can search on that site for this program-"Avast home edition". It is the best freeware program and removed the virus in no time.
  • The Funweb A is a Trojan horse virus and when Avast picked it up was going under another name and that is why everybody is having difficulty in removing it.
  • Two programs going really well with Avast and also freeware on the same site is Ad-Aware spy detector and Zone Alarm firewall.
  • Use Bitdefender to scan your computer. It will find Funweb.A and delete it.
  • W32/Funweb. FunWebProducts is an application that gets installed on your internet explorer toolbar. This product will track your internet surfing activity and send this information back to their servers. While they claim to not have any personal information, this will slow down your internet connection.
  • Use Stop-Sign antivirus. It found the funweb virus during a routine scan and deleted it.
  • Use Microsoft's Live OneCare Trial temporarily, and it cleaned up Funweb easily.

How do you get rid of Trojan Spooner A virus?

Download and run firefox to protect your computer from future spyware attacks and pop ups which are coming in through internet explorer (Trojan downloaders, win32 ).Browser attacks aren't easy to spot because they piggyback on legitimate traffic that doesn't exhibit many obvious warning signs

1. Run Deckard's System Scanner (DSS)

2. Run the vundo and combo fix

3. Run Malwarebytes Anti-Malware

4. Run the anti spyware removal programs spybot

5 Run Superantispyware

6. Run a complete scan with free curing utility Dr.Web CureIt!

I used AVG free 6 to remove Spooner.A, the only part it didn't remove was form SP.exe in the root directory of C, i changed my settings to show hidden files and deleted it manually.

USE AVG FREE 7 TO REMOVE TROJAN HORSE SPOONER.A,IT ALSO REMOVES sp.exe ,WHICH IT DID NOT DO IN AVG FREE 6

For support within the United States and Canada, call toll-free (866) PCSAFETY (727-2338).

This is the Microsoft virus line, the call is free if you call them they will walk you though the steps for virus removal

Try to download and intall malwarebytes anitvirus software , upgrade and scan the computer for the virus .

How do you remove vssip exe from your computer?

Run these 5 essential steps to remove all the spyware on your computer.

1. Run Deckard's System Scanner (DSS).

2. Run Malwarebytes Anti-Malware.

3. Run Spybot Search and Destroy.

4. Run Superantispyware.

5. Run a complete scan with free curing utility Dr.Web CureIt!

Install Threatfire which will enhance your antivirus protection.

Could a virus cause the screen to quiver shake or move now and then?

Moved cell phone away from computer and seems to have solved the problem.

Why would your computer go tontsearch.com when trying to click a word in a webpage?

First go to the Control Panel to remove programs you don't want and those you don't recognize. Then try running these 5 steps to remove all the spyware on your computer.

1. Run Deckard's System Scanner (DSS).

2. Run Malwarebytes Anti-Malware.

3. Run Spybot Search and Destroy.

4. Run Superantispyware.

5. Run a complete scan with free curing utility Dr.Web CureIt!

Install Threatfire to enhance your antivirus protection.

How can you remove Trojan MusicSearch.AM in a subdirectory under c system volume?

Assuming you mean a subdirectory under 'C:\System Volume Information' and your anti-virus application has detected but cannot fix the problem :- select System Restore tab in System Properties (WinKey+Pause) and check the box marked 'Turn off System Restore on all drives', confirm, close System Properties and reboot. This will clear all files in 'C:\System Volume Information' and therefore the MusicSearch.AM problem. 'C:\System Volume Information' is not just a hidden folder, it's also system protected and as such, anti-virus software cannot write to any file within and therefore cannot delete or quarantine any infected file detected. To turn on System Restore, just reverse the above procedure. Hope this helps, Canis.

Does Mircrotrend House Call remove Spyware and Adware?

Neve heard of Microtrend. If you are talking about Trendmicro, the answer is yes. Another good free online scan is Panda.

Why can't you just delete all the files in your AVG Free Edition Virus Vault to remove a virus?

Usually it will work, but sometimes it will be formed again. Although you delet it using AVG, it will form again and again. In this case, see the file's location, and delete it yourself.

How do you get rid of a virus .pif file?

Unfortunately, IM viruses have become a very common problem lately. Generally, removing these viruses can be complex, and removal instructions vary depending on which virus you have. More detail would be useful.

There are however some general things you can do:

1. Your best solution is to use a virus scanner. If the scanner does not detect the virus, it may lead you to a removal tool online.

2. If you know the name of the virus you have, a simple search on a virus scanner's web site (such as www.symantec.com) will probably lead you to an automatic removal tool.

3. Check out Microsoft's security web site at They have some tools you can use to remove many of these types of viruses, especially for MSN Messenger. You can look up other IM web sites to see if they have a removel tool available.

4. Spyware removal software, such as Ad-aware, can sometimes clean some types of these viruses. Check out www.lavasoft.com for more.

5. Try a google search, and provide as many details as possible. It's very likely someone has posted removal steps somewhere for your virus.

You can get rid of this worm , by following these steps .

1 Download and intall the Malwarebytes on your computer .

2 Update your Malwarebytes .

3 Scan your computer for all the malwares in your computer .

4 Remove all the malwares , found while scanning with the malwarebytes .

5 Restart your computer ,

You need to run these 3 essential programs to remove all the spyware on your computer.

If you do not have an internet security suit and only an anti virus

1. Run Malwarebytes Anti-Malware

2. Run a complete scan with free curing utility Dr.Web CureIt!

3. Run the anti spyware removal programs spybot or Superantispyware

Browsers

Use Mozilla firefox or the google chrome browser for browsing unsafe websites

Install ThreatFire

ThreatFire, features innovative real-time behavioral protection technology that provides powerful standalone protection or the perfect complement to traditional signature-based antivirus programs offers unsurpassed protection against both known and unknown zero-day viruses, worms, trojans, rootkits, buffer overflows, spyware, adware and other malware.

Run an online virus scan like

Trend Micro HouseCall

Kaspersky free online virus scanner

Windows Live OneCare safety scanner

BitDefender Online Scanner

ESET Online Antivirus Scanner

F-Secure Online Virus Scanner

avast! Online Scanner

update your software by running

Secunia Online Software Inspector

Install a good antivirus in your computer.

Keep your antivirus updated. If automatic updates are available, configure your antivirus to use them.

Keep your permanent antivirus protection enabled at all times.

If your cursor is frozen in one place and unusable how can you unfreeze it?

This happened to me once. and it was so is frustrating.

Here's how I fixed mine (don't forget to set a restore point in case something goes wrong?): using your keyboards arrow keys, tab keys, hot keys, etc. to navigate your system.

-- REBOOT in SAFE MODE.

-- Go to START > SETTTINGS > CONTROL PANEL and open your SYSTEM PROPERTIES. Select the HARDWARE tab and open your DEVICE MANAGER scroll down to MICE AND OTHER POINTING DEVICES and double click on your listed/installed device to open up a PROPERTIES WINDOW on this device.

-- Select DRIVER tab. From here you can try several things: You may need to update your drivers, and, at least in XP you can roll back to your previous setting if updates don't help, or, heaven forbid, make matters worse.

-- OR you can do what finally worked for me. I had to uninstall my mouse drivers then reinstall install them. No more problem - for me anyway.

This helped me. I hope it works for you as well. Good Luck.

How do you remove download Trojan found at C windows temp dwh2691.tmp if Norton says access denied?

1. Download and run firefox to protect your computer from future spyware attacks and pop ups which are coming in through internet explorer (Trojan downloaders, win32 ).Browser attacks aren't easy to spot because they piggyback on legitimate traffic that doesn't exhibit many obvious warning signs . 2. Run the vundo and combo fix 3. Run Malwarebytes Anti-Malware

4. Run the anti spyware remove programs spybot

5. Run a complete scan with free curing utility Dr.Web CureIt!

What is Funweb and how do you get rid of it?

You need to run these 5 essential steps to remove all the spyware on your computer.

1. Run Deckard's System Scanner (DSS)

2. Run Malwarebytes Anti-Malware

3. Run the anti spyware removal programs spybot

4 Run Superantispyware

5. Run a complete scan with free curing utility Dr.Web CureIt!

Install threat fire which will enhance your antivirus protection

What does Trojan horse TR Dldr Delf R do to your computer?

Trojan-Clicker.Win32.Delf.r

This Trojan hijacks Internet Explorer

You need to run these 5 essential steps to remove all the spyware on your computer.

1. Run Deckard's System Scanner (DSS)

2. Run Malwarebytes Anti-Malware

3. Run the anti spyware removal programs spybot

4 Run Superantispyware

5. Run a complete scan with free curing utility Dr.Web CureIt!

Install threat fire which will enhance your antivirus protection

How do you remove Trojan Horse Downloader Wren F from C System Volume Information-restore file if none of your antivirus programs will remove it?

The easiest way to get rid of it is to switch off system restore, then switch it back on again. This is done through 'System' in the 'Control Panel'. This deletes all of your restore points, so you'll have to do a manual 'restore point' afterwards. There are some antivirus programs that can get rid of viruses/trojans in restore point files, AVAST is one of them. You'll have to make sure that whatever antivirus program you're running is up-to-date though.