It has been a while since I first got the virus warning about this Trojan.Zbot Activity 15 from my security program. It has been quarantined successfully, but I just wonder why I can’t remove it completely. Will it damage my computer even if it is quarantined? I keep getting problems like blue screen of death on my computer, is it caused by this virus? What else will it conduct to my computer? Please help!

Brief Introduction to This Trojan

Trojan.Zbot Activity 15 comes from the Trojan horse infection family. It can be the biggest computer threat family that has thousands of infection existed nowadays. It is a kind of computer virus that can sneak into target computer from many means. Computers that run Windows XP, Vista, 7 and 8 can be targeted by Trojan infection only. It is not safe for users to allow this kind of infection stays on their machines for a long time as it can generate different problems to the affected machines in a lot of ways. In a word, this Trojan horse virus is a malicious computer infection that can cause severe troubles to the machines which have been aimed by it. The ways for it to invade can be various and users will never expect that how it can infiltrate their computers.

Luckily, this Trojan.Zbot Activity 15 virus can be easily detected by anti-virus programs if the target computers have installed one as the security tools are designed to guard computers from virus attack. But thing will never be easy, this Trojan can be able to corrupt the security system so that the anti-virus program installed will lose the ability to get this infection removed. What’s worse, the system firewall can be disabled as well. In such a bad condition, the infected computers can be completely compromised. So when people come to the Internet, their computers can be attacked by various types of computer infection without any warning. The situation can be worse and worse if more computer malware have come to the corrupted machines.

When this Trojan.Zbot Activity 15 sneaks into the target computers, it can cause more problems that people imagine. The system registry can be messed up by it as it can add its data into it, so that this Trojan can be activated from the startup. That’s to say, whenever people turn on the infected computer, this Trojan can start its evil activities at once. People will notice that their computers can be slower and slower as this virus can consume a large percentage of CPU usage. People can get annoying pop-ups all the time during the use of the infected computer, also, people can be redirected to many malicious websites that contain more computer virus when they go online on the affected machines.

Some Traits about This Trojan

-Can slow down the performance of the computer, or even blue screen.
-Can create many junk files which occupy a lot of space in hard drive
-Can download other malicious programs into computer, which make further damage.
-Your sensitive information can be stolen by hacker who can access to your computer with the help of this Trojan.
-Cay give you many redirects all the time no matter what you are doing.
-May pretend as an anti-virus program and cheat you that computer is in dangerous, and ask you to pay to remove the threats.

NOTE: If you find any of these symptoms on your computer, that proves your PC is under attack and seriously infected. If you are not a computer savvy, Please contact YooSecurity Online PC Experts to remove this Trojan.Zbot Activity 15 for you.

Manual Removal Guide of Trojan (For Computer Literate)

There is a removal guide of Trojan provided here; however, expertise is required during the process of removal, please make sure you are capable to do it by yourself.

Step 1: Find Ctrl, Alt, and Delete these 3 keys and then press them together to open task manager to end the process related to this Trojan, the name of the process of it is random.

XP task manager

Step 2: Try to find Folder Options in Control Panel, select the View tab, and then tick Show hidden files and folders and non-tick Hide protected operating system files (Recommended) and then click OK.


Step 3: Try to find the files which relate to this Trojan, and delete them all.

Step 4: Click on Start button at the right lower corner, then click on Control Panel


Then you will come to the Control Panel windows, click on Add and Remove Programs


Then try to find the program which relates to this Trojan, highlight it and choose Remove, the program’s name is random.


Step 5: Click on Start button or press Win+R, then type regedit in the box to open Registry Editor, after that, try to find
C:\Users\profile name here\AppData\

Similar video guide to modify Windows registry:


This Trojan.Zbot Activity 15 is not a good stuff for Windows computers. With this Trojan horse infection saved on the computer, the affected machine can be damaged from many aspects. The performance of the infected machine can be worse and worse as this Trojan can slow down it on the background. What’s worse, cyber criminals can take advantage of this infection to achieve more bad purpose from innocent computer users.

Suggestion: To follow removal guide that mentioned above, a level of computer knowledge is needed. Still can’t get out of Trojan.Zbot Activity 15? Contact online experts for help now!

Published by Tony Shepherd & last updated on February 7, 2015 1:08 pm

Leave a Reply