Hey, there. My computer is infected by a malicious Trojan which is named Trojan.Multi.Cerstor.a. Lots of troubles occur after its installation. I feel so angry and annoy on this vicious infection. I don’t know how I get this Trojan into my computer. But I can’t remove it with my antivirus tool. How terrible it is! I don’t know what to do now. It is said manual removal method can remove this virus completely and permanently. But how should I get rid of this virus by manual? Can anyone help me to do this? Thanks!
Trojan.Multi.Cerstor.a is sorted to be a member of Trojan horse family which is a risky and hateful virus that is created by cyber criminals to attack computer users around the world. This Trojan can do lots of unwanted actions to chock up your computer resources after it installed on your computer. After the installation, it may control your computer and then take over your online activities at once. Additionally, it may also make your computer’s operating system crashed frequently. Due to this virus, you may not use your computer normally as usual. This virus can make your computer system disabled as soon as it can since it sneaks into your computer. Moreover, it has the ability to ruin the security of your operating system. So many infections can get into your computer easily. This virus may set your computer in great risk. So you need to remove this virus as soon as you detect it on your computer.
How does this virus get into your computer? Trojan.Multi.Cerstor.a is rated as a high-level Trojan infection by threat researchers. This tricky Trojan may be installed on a computer through suspicious websites, bundled with free programs or included as an attachment on e-mails from unknown sources. Once it is installed on a computer, this vicious virus program will run in the background and may occupy a lot of system resources. It may decrease your computer performance and even disable the Internet. Your browser setting and default homepage will be changed. So that no matter when you open the browser or start a new tab, you will be redirected to some unwanted websites. Otherwise, it has the ability to change your system files or add new ones. So that, after its installation, you may be redirected to corrupted Web pages every time you try to access a search result or open a new tab. Removal of Trojans may be a little more complicated than other threats. Therefore, you should use manual removal methods to remove this Trojan completely and permanently from your computer.
1. Desktop background image and Browser homepage settings are changed. Google, Yahoo Searches are redirected.
2. It may slow down your computer considerably and you will feel like your computer is stuck. This includes opening programs, shutting down your computer, and slow Internet.
3. It is capable to corrupt your windows registry and uses it to deploy annoying pop up ads out of nowhere. You will get many unwanted pop-ups on your computer.
Note: No matter how the virus accesses your PC, users should know that there are no tools can remove this pesky Trojan automatically at this moment, it is suggested users not spend much time in downloading or paying any security software which claims can delete this stubborn virus. It is totally useless. To completely get rid of Trojan.Multi.Cerstor.a, professional manual guide is needed.
Currently many computer users had the same experience that this virus couldn’t be removed by any anti-virus applications. So the manual approach is always required to combat this virus. And here is the step-by-step removal guide for all computer users.
1. End the malicious process from Task Manager.
Once Trojan.Multi.Cerstor.a is installed,computer user may notice that CPU usage randomly jumps to 100 percent. At any time Windows always has many running processes. A process is an individual task that the computer runs. In general, the more processes, the more work the computer has to do and the slower it will run. If your system’s CPU spike is constant and remain at a constant 90-95%, users should check from Task Manager and see if there is a suspicious process occupying system resources and then end it immediately.
(The name of the virus process can be random.)
Press Ctrl+Shift+Esc to quickly bring up Task Manager Window：
2. Show hidden files and folders.
Open Folder Options by clicking the Start button, clicking Control Panel, clicking Appearance and Personalization, and then clicking Folder Options.
Click the View tab.
Under Advanced settings, click Show hidden files and folders, uncheck Hide protected operating system files (Recommended) and then click OK.
3. Open Registry entries. Find out the malicious files and entries and then delete all.
Attention: Always be sure to back up your PC before making any changes.
a. Press Windows key + R to open Run box. In the “Open” field, type “regedit” and click the “OK” button.
Then a Registry Editor window will pop up as the following picture shows:
b. Search malicious files and registry entries and then remove all of them:
Trojan.Multi.Cerstor.a is a trojan infection which can take control of browsers including Internet Explorer, Google Chrome, Mozilla Firefox and etc.. So once this virus gets into your computer, you will be readdressed to visit unsafe websites. Your security system will be ruined by this virus. So that other viruses like Trojan, spyware, adware, malware will get the chance to get into your computer. Due to this Trojan, when you go online, your web page will get stuck and crash so frequently. If you want your computer back to normal, please remove this Trojan immediately when you find it on your computer. Manual removal method is the only and the most effective way to remove this virus completely and permanently. This process is so complicated. So if you don’t know how to remove this virus by manual by yourself, please do not try by yourself as even one step mistake you made on your computer will lead to the damage of your whole system. You are suggested to contact YooCare 24-hours online expert for further help.
Published by & last updated on March 7, 2015 6:32 am