Safe Method to Remove Perfstringbackup.tmp

Hey, there, I got a virus on my laptop that I can't remove it by myself. It is called Perfstringbackup.tmp and I was warned by my anti-virus program. I thought the security tool can help me out of this, but after several tries, I gave up. It can always come back to my machine after I restart my computer to finish the virus removal as the tool requires. I know now I'm screwed. Can somebody help me out of this? Thanks in advance.

Perfstringbackup.tmp Analisis

Perfstringbackup.tmp is a dangerous Trojan horse that usually pretends to be legitimate software - but actually performs a series of harmful activities when installed on your computer. This Trojan horse often gets into your computer via freeware, malicious websites, suspicious links and spam email attachments. When installed on your computer, it first injects its malicious codes into the system and creates many malicious files with random file names in your hard drives, mainly in the C drive. It also modifies the Windows registry entries, which allows it to run automatically before the Windows is launched. Besides, it deletes system files arbitrarily, causing various problems like programs not responding, abrupt computer shutting down, blue screen of death, etc. To escape from quick detection and removal, this Trojan horse even blocks your antivirus program from running normally. Therefore, you ought to remove Perfstringbackup.tmp virus without any delay.

INFECTED SYMPTOMS:

Perfstringbackup.tmp comes from Internet or LAN network, it will also hide in USB thumb drive.
Perfstringbackup.tmp tracks your browsing activities/interests and steals sensitive financial data.
Perfstringbackup.tmp can largely degrade computer performance.
Perfstringbackup.tmp may force you to visit some unsafe websites and advertisements which are not trusted.
WebCake may come with spyware or other privacy-invasive software.

How did Perfstringbackup.tmp install on my computer?

Nowadays, there is a new Trojan Horse virus called Perfstringbackup.tmp detected by more and more antispyware software like Norton, AVG, AVAST, and MSE, etc. The infection alert often occurs after the users install or download free software from some unknown websites. In most cases, Perfstringbackup.tmp is always bundled with some freeware, shareware and online exchanging files to spread all over the Internet. Trojan viruses are known to cause internal problems mainly on the infected computers. They are enabled with the ability to duplicate and spread infectious files all over the hard drives.

Tips: To effectively delete the Trojan horse from your PC, you need to have experience of dealing with processes, files, and registry entries. Namely, it requires you to have high level of troubleshooting skills to remove the Trojan horse. However, not everyone is a computer geek. This is why some malware removal tools are created. To ensure a complete and safe removal of Perfstringbackup.tmp, novice computer users need to resort to a reliable removal tool.

Manual Removal Guide:

Step 1: Reboot the infected computer into the Safe Mode with Networking.

a. Reboot the infected computer and keep taping the function key F8 repeatedly during the start-up process.

b. Select the "Safe Mode with Networking" with the arrow keys and press Enter.

Step 2: Stop processes related to Perfstringbackup.tmp via the Windows Task Manager.

a. Press CTRL+ALT+DEL together to open the Windows Task Manager.

b. Select the tab of "Processes" and then search for the Trojan horse related processes (usually named randomly).

c. Stop the malicious processes by selecting them and clicking on the End Process button.

Step 3: Delete files associated with the malicious Trojan horse.

a. Open My computer and go to the local hard disk C.

b. Search for and delete all the following files:

%AppData%[trojan name]toolbardtx.ini

%AppData%[trojan name]toolbarlog.txt

%AppData%[trojan name]toolbarpreferences.dat

%AppData%[trojan name]toolbarguid.dat

%AppData%[trojan name]toolbarstats.dat

%AppData%[trojan name]toolbaruninstallIE.dat

%AppData%[trojan name]toolbaruninstallStatIE.dat

%AppData%[trojan name]toolbarversion.xml

%AppData%[trojan name]toolbarstat.log

Step 4: Remove the registry entries related to the Trojan horse.

a. Go to Start menu, and then select Run.

b. Type "regedit" into the command box and press Enter.

c. Search for and remove the malicious registry tries below.

HKEY_LOCAL_MACHINESOFTWAREClasses[trojan name]IEHelper.DNSGuard.1

HKEY_LOCAL_MACHINESOFTWAREClasses[trojan name]IEHelper.DNSGuardCurVer

HKEY_LOCAL_MACHINESOFTWAREClasses[trojan name]IEHelper.DNSGuardCLSID

HKEY_LOCAL_MACHINESOFTWAREMicrosoftInternet ExplorerToolbar "[trojan name]"

HKEY_LOCAL_MACHINESOFTWAREClasses[trojan name]IEHelper.DNSGuard

Important Warning

We learn that this Perfstringbackup.tmp virus is at high threat level and affects computer users all over the world. It can be activated on your computers running with Vista, XP, Windows 7 and other Windows systems automatically in order to trace your system records and online history. While being affected, you will find that the computer suffers from constant freezes and other serious damages unexpectedly. When you carry out activities on the computer, you may get pesky error messages about files, programs or computer settings. Since the Trojan can avoid the detection or deletion of your anti-virus software, it should be deleted from your computer automaticly.