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Danger level 3
Type: Worms

Worm Viking

Worm.Viking is a sneaky infection, of whose presence you will not be informed about if your antivirus program is not powerful enough to fight the worm off. The infection can spread through removable drives and shared resources such as Intranet or other devices, which enables remote attackers to inject the worm onto a great number of computers. In case Worm.Viking is not detected and presented by the antispyware tool, you should not try to remove it on your own just because of its complex architecture.

The infection consists of various .exe and .dll files that have random names and are hidden from the infected computer’s security applications. The “leader” of the troublemaker files is help[1].exe, which you should be aware of, because its processes enable the attackers to corrupt the infected computer’s system and manipulate its processes. For example, if this latent file is employed, unforeseen changes are made in the settings of Windows Security Center, Firewall, Registry and other parts of the system. Additionally, Worm.Viking can disable Safe Mode and access to the Task Manager; can exploit DNS to define URL IP addresses and modify the browser’s settings to constrain you from visiting particular websites. It is also highly probable that the threat is capable of monitoring your computer mouse’s movements and keystrokes or even the contents of the screen.

As the facts for themselves, you should immediately launch a scan of a professional spyware removal application whenever you notice that the PC’s performance is somewhat different. This could happen because the infection can modify the existent processes and creates new ones. Our advice regarding Worm.Viking’s removal is to use a powerful spyware or malware removal tool so that Worm.Viking is completely removed. Even if you decide to give a try and delete the threat on your own, do not forget to run a scan afterwards just to make sure that the removal has been successful.

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How to manually remove Worm Viking

Files associated with Worm Viking infection:

trs.sys
6to4.dll
ztso0.dll
ztso.exe
wxf.dll
woso0.dll, woso1.dll
wmso0.dll, wmso1.dll
wmso.exe, mmc[1].exe
wlso0.dll
wlso.exe
wgso0.dll
wgso.exe
wdso0.dll
wdso.exe, srogm[1].exe
tlso0.dll
tlso.exe
rxso0.dll
rxso.exe
qjso0.dll
qjso.exe
mhso0.dll
mhso.exe
jtso0.dll
jtso.exe
help[1].exe
fyso0.dll
fyso.exe
daso0.dll
daso.exe
ciuytr0.dll,ciuytr1.dll
934erew0.dll,934erew1.dll
934erew1.dll
934erew0.dll
7hjetrr0.dll
ciuytr1.dll
ciuytr0.dll

Worm Viking DLL's to remove:

6to4.dll
ztso0.dll
wxf.dll
woso0.dll, woso1.dll
wmso0.dll, wmso1.dll
wlso0.dll
wgso0.dll
wdso0.dll
tlso0.dll
rxso0.dll
qjso0.dll
mhso0.dll
jtso0.dll
fyso0.dll
daso0.dll
ciuytr0.dll,ciuytr1.dll
934erew0.dll,934erew1.dll
934erew1.dll
934erew0.dll
7hjetrr0.dll
ciuytr1.dll
ciuytr0.dll

Worm Viking processes to kill:

ztso.exe
wmso.exe, mmc[1].exe
wlso.exe
wgso.exe
wdso.exe, srogm[1].exe
tlso.exe
rxso.exe
qjso.exe
mhso.exe
jtso.exe
help[1].exe
fyso.exe
daso.exe

Remove Worm Viking registry entries:

Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{F171A450-7AF5-43E1-AFED-EDC826A1B0F5}
{F171A450-7AF5-43E1-AFED-EDC826A1B0F5}
{F171A44F-7AF5-43E1-AFED-EDC826A1B0F5}
{F171A442-7AF5-43E1-AFED-EDC826A1B0F5}
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