Click on screenshot to zoom
Danger level 7
Type: Trojans
Common infection symptoms:
  • Cant change my homepage
  • Changes background
  • Connects to the internet without permission
  • Installs itself without permissions
  • Shows commercial adverts
  • Slow Computer
  • Slow internet connection
  • System crashes

Backdoor.Uprootkit

Backdoor.Uprootkit is a long-running Trojan, which initially had been spotted by Symantec at the end of 2003. The name of this infection gives out the nature of this malicious application, and you can be sure that this backdoor can circumvent security tools, hide its processes from removal, or even steal your personal information. Another important Backdoor.Uprootkit feature is that it can enter your system in various paths of infiltration, whether it be encrypted downloads or spam email attachments. The latent Backdoor.Uprootkit also can perform DDoS attacks, which could allow more malware running in your system. So, if in your system and not removed, Backdoor.Uprootkit can be used by cyber criminals working via remote servers, to take over your whole Windows system’s control. Unfortunately, this Trojan is ready to attack almost all Windows systems (from Windows 2000 to XP), especially those in China, Japan and US regions.

Even though Backdoor.Uprootkit is conducted of questresult113.exe, resulturl131.exe and xiloadzA4.dll files, they are only the little keys, which allow this Trojan work unnoticeably, and smss.exe is the one to be feared of. This malicious Backdoor.Uprootkit executable can control your normal Windows operations and connect to the web, without your authorization. This file adds all Trojan’s processes to the system’s start-up, which allow Backdoor.Uprootkit to begin running immediately after you click your power button. To hide the malignant processes, your Windows Security Center settings will be modified, access to Registry Editor and Task Manager removed, and low-level, outdated security services will be circumvented, so that no security notification would warn you about Backdoor.Uprootkit and its danger!

Once Backdoor.Uprootkit is hidden from being detected and removed, smss.exe will allow the connection between your computer and remote servers. With this attribute more malicious programs could be infiltrated on your system, your email address and phone book details could be recorded, and information from autoexec.bat file stolen. Besides all that, Backdoor.Uprootkit executable can also add and delete important processes, required for Backdoor.Uprootkit’s removal, disable safe mode feature, restrict Windows File Protection, and modify Windows Host File. If the later happens, you will notice that you get redirected to suspicious sites, offering you to purchase some products. It is highly essential not to trust such sites, as they could be targeted at your money, not your needs.

Backdoor.Uprootkit must be removed immediately, but it is unlikely that many Windows users will be able to do it manually. So, if you have never deleted Trojans from your Windows system, we recommend trusting automatic Backdoor.Uprootkit removal tools. Such products will maintain your system’s protection and will help you delete any other infections that Trojan Backdoor.Uprootkit could have “invited”.

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How to manually remove Backdoor.Uprootkit

Files associated with Backdoor.Uprootkit infection:

smss.exe
xiloadzA4.dll
resulturl131.exe
questresult113.exe
smss.exe
xiloadzA4.dll
resulturl131.exe
questresult113.exe

Backdoor.Uprootkit DLL's to remove:

xiloadzA4.dll

Backdoor.Uprootkit processes to kill:

questresult113.exe
smss.exe
resulturl131.exe
resulturl131.exe
questresult113.exe
smss.exe
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