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Danger level 7
Type: Trojans
Common infection symptoms:
  • Annoying Pop-up's
  • Connects to the internet without permission
  • Installs itself without permissions
  • Shows commercial adverts
  • Slow Computer
  • Slow internet connection
  • System crashes


Another dangerous Trojan - TR/Dropper.Gen5 - has surfaced, and it has been found out that this latent Windows OS infection works as a malware dropper, which means that more malicious infections are likely to attack your computer, alongside this Trojan. Also known by such names as Win32:MalOb-HS [Cryp] or Trojan.Win32.FakeSysdef!IK, TR/Dropper.Gen5 has been discovered to be followed by such fake system optimizers:

Check Disk
Disk Defrag
HDD Rescue
PC Repair
Windows XP Restore

It may be difficult to find and remove Trojan TR/Dropper.Gen5 from your system, as this deceitful application does not have an interface, and can be easily hidden from detection of existing security tools. However, you can sense that the Trojan is, in fact, inside your computer, if it slows down dramatically, some of your Windows privileges are removed, and one of the bogus system defragmenters are sending you such ridiculous alerts:

Critical Error
Hard drive critical error. Run a system diagnostic utility to check your hard disk drive for errors. Windows can't find hard disk space. Hard drive error.

Critical Error
Hard Drive not found. Missing hard drive.

Critical Error
RAM memory usage is critically high. RAM memory failure.

Such misleading notifications are completely bogus, and you can easily suspect that they do not represent any reality, as information given is technically incorrect. All in all, fictitious system optimizers are just part of the TR/Dropper.Gen5 Trojan, and this program can cause more harm or even “invite” more malicious applications!

TR/Dropper.Gen5 is a rootkit Trojan, which means that this infection can be hidden from any security tools’ detection, which is employed by the most dangerous Trojan executable file.exe. This infection’s component can place malignant processes to the system’s boot-up, add and delete them in the Registry, modify runtime policies, disable functionality of Windows Security Center, and even connect to the Internet, without your authorizations. That is highly hazardous, because this way TR/Dropper.Gen5 can be used by remote servers to use your accounts for further contamination, download malware onto your computer, or record autoexec.bat file information.

TR/Dropper.Gen5 component file.exe is not the only malicious executable running, and, if you can access Task Manager, you should be able to notice files running, with randomly generated names like jqvEWWWjBFasgls.exe, nlBGVp6a63OqCs.exe, or YPfdbKQmYWnOqAL.exe. These files are also vital for the Trojan’s smooth functionality, but we do not recommend having them removed manually, because of the complexity of the Trojan. File.exe is polymorphic, so if you have no previous removal experience, having this file discovered and deleted will be extremely difficult. We advise you to use legal security software, which will remove TR/Dropper.Gen5 with all of its malign files automatically in only a couple of minutes. Note that infection’s removal must be trusted to up-to-date security tools, which would be able to detect the rootkit Trojan.

Download Spyware Removal Tool to Remove* TR/Dropper.Gen5
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How to manually remove TR/Dropper.Gen5

Files associated with TR/Dropper.Gen5 infection:


TR/Dropper.Gen5 processes to kill:


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