Home Malware Programs Worms Worm.Viking

Worm.Viking

Posted: July 2, 2007

Threat Metric

Threat Level: 5/10
Infected PCs: 330
First Seen: July 24, 2009
Last Seen: June 22, 2022
OS(es) Affected: Windows

Worm.Viking is a malicious worm parasite that spreads through computer networks. Worm.Viking is designed to make duplicate copies in different locations on your machine. That’s why it may appear very difficult to remove Worm.Viking manually. Once inside your computer, Worm.Viking will embed itself into the processes of Explorer.exe, Iexplore.exe and others. Worm.Viking may also do weird things to your computer, for example change your speaker volume levels. Worm.Viking may also tend to send its own copies to other users in your network.

Technical Details

File System Modifications

Tutorials: If you wish to learn how to remove malware components manually, you can read the tutorials on how to find malware, kill unwanted processes, remove malicious DLLs and delete other harmful files. Always be sure to back up your PC before making any changes.

The following files were created in the system:



wlso0.dll File name: wlso0.dll
Size: 24.3 KB (24308 bytes)
MD5: f140a6aa6eb070b3c72dadbc458fb4ae
Detection count: 95
File type: Dynamic link library
Mime Type: unknown/dll
Group: Malware file
Last Updated: December 11, 2009
fyso.exe File name: fyso.exe
Size: 44.88 KB (44889 bytes)
MD5: f5327356141401e159db576d6535c695
Detection count: 26
File type: Executable File
Mime Type: unknown/exe
Group: Malware file
Last Updated: December 11, 2009
wlso.exe File name: wlso.exe
Size: 45.57 KB (45571 bytes)
MD5: d60f44a04a687e530ec942422d487035
Detection count: 25
File type: Executable File
Mime Type: unknown/exe
Group: Malware file
Last Updated: December 11, 2009
wmso.exe, mmc[1].exe File name: wmso.exe, mmc[1].exe
Size: 45.19 KB (45197 bytes)
MD5: 17c449cc5cbf6d36c334bf80db73412a
Detection count: 24
File type: Executable File
Mime Type: unknown/exe
Group: Malware file
Last Updated: December 11, 2009
wgso.exe File name: wgso.exe
Size: 46.73 KB (46736 bytes)
MD5: acc062fc5c69a53659fcece4194cadbe
Detection count: 23
File type: Executable File
Mime Type: unknown/exe
Group: Malware file
Last Updated: December 11, 2009
tlso.exe File name: tlso.exe
Size: 45.52 KB (45524 bytes)
MD5: cfcf586f494201a792ad094c588929e9
Detection count: 22
File type: Executable File
Mime Type: unknown/exe
Group: Malware file
Last Updated: December 11, 2009
rxso.exe File name: rxso.exe
Size: 45.91 KB (45916 bytes)
MD5: 584191814d842fe916536d20e50b4abf
Detection count: 21
File type: Executable File
Mime Type: unknown/exe
Group: Malware file
Last Updated: December 11, 2009
wdso.exe, srogm[1].exe File name: wdso.exe, srogm[1].exe
Size: 46.36 KB (46366 bytes)
MD5: f687d8f50eb5ff887ec121e43cf67686
Detection count: 20
File type: Executable File
Mime Type: unknown/exe
Group: Malware file
Last Updated: December 11, 2009
woso0.dll, woso1.dll File name: woso0.dll, woso1.dll
Size: 25.24 KB (25248 bytes)
MD5: 0d1c78b6418dde0928b71a7cb9b25fa3
Detection count: 16
File type: Dynamic link library
Mime Type: unknown/dll
Group: Malware file
Last Updated: December 11, 2009
ztso0.dll File name: ztso0.dll
Size: 23.77 KB (23772 bytes)
MD5: 83b4f909c57123190c30515a711e798e
Detection count: 15
File type: Dynamic link library
Mime Type: unknown/dll
Group: Malware file
Last Updated: December 11, 2009
wxf.dll File name: wxf.dll
Size: 32.22 KB (32224 bytes)
MD5: d17b2ffcf7433fbb7e857a730ec62ba9
Detection count: 14
File type: Dynamic link library
Mime Type: unknown/dll
Group: Malware file
Last Updated: December 11, 2009
jtso.exe File name: jtso.exe
Size: 44.15 KB (44152 bytes)
MD5: 6eef87d82d0f939d6cfd3fa060dcf78e
Detection count: 13
File type: Executable File
Mime Type: unknown/exe
Group: Malware file
Last Updated: December 11, 2009
daso.exe File name: daso.exe
Size: 47.01 KB (47017 bytes)
MD5: d92195fa1b0ba9f8db4c137eb04250ea
Detection count: 12
File type: Executable File
Mime Type: unknown/exe
Group: Malware file
Last Updated: December 11, 2009
%SYSTEMDRIVE%\Users\<username>\Desktop\m\d10299a3c4f3e1d3c8c188b6ea29355904a3435e39c48d9678cf4881c801e4d1.exe File name: d10299a3c4f3e1d3c8c188b6ea29355904a3435e39c48d9678cf4881c801e4d1.exe
Size: 364.54 KB (364544 bytes)
MD5: ece7276ebb8832e9c0b4cc0fc0252f44
Detection count: 12
File type: Executable File
Mime Type: unknown/exe
Path: %SYSTEMDRIVE%\Users\<username>\Desktop\m\d10299a3c4f3e1d3c8c188b6ea29355904a3435e39c48d9678cf4881c801e4d1.exe
Group: Malware file
Last Updated: October 18, 2020
wgso0.dll File name: wgso0.dll
Size: 25.31 KB (25316 bytes)
MD5: 7403c554d1658493049136545caed753
Detection count: 11
File type: Dynamic link library
Mime Type: unknown/dll
Group: Malware file
Last Updated: December 11, 2009
qjso.exe File name: qjso.exe
Size: 45.1 KB (45105 bytes)
MD5: 068e2a9fb53fd0eed979a715f0274e5c
Detection count: 10
File type: Executable File
Mime Type: unknown/exe
Group: Malware file
Last Updated: December 11, 2009
%SYSTEMDRIVE%\Users\<username>\Desktop\m\6f2036b4355ec7c409d9a3db44baa46cc7d7b23fd94b2c0def5cc8b16e0fac20.exe File name: 6f2036b4355ec7c409d9a3db44baa46cc7d7b23fd94b2c0def5cc8b16e0fac20.exe
Size: 315.39 KB (315392 bytes)
MD5: 09cec3e0236127e13ea5a868d854f56a
Detection count: 9
File type: Executable File
Mime Type: unknown/exe
Path: %SYSTEMDRIVE%\Users\<username>\Desktop\m\6f2036b4355ec7c409d9a3db44baa46cc7d7b23fd94b2c0def5cc8b16e0fac20.exe
Group: Malware file
Last Updated: October 18, 2020
rxso0.dll File name: rxso0.dll
Size: 25.4 KB (25404 bytes)
MD5: e7448f34d12876ad0883a98d19651c4c
Detection count: 6
File type: Dynamic link library
Mime Type: unknown/dll
Group: Malware file
Last Updated: December 11, 2009
jtso0.dll File name: jtso0.dll
Size: 23.38 KB (23380 bytes)
MD5: 20655899c9cf8edc29c8f72dbab301fd
Detection count: 5
File type: Dynamic link library
Mime Type: unknown/dll
Group: Malware file
Last Updated: December 11, 2009
wdso0.dll File name: wdso0.dll
Size: 24.06 KB (24068 bytes)
MD5: b9f7ef3052d0a65c9df24a3849504a5a
Detection count: 2
File type: Dynamic link library
Mime Type: unknown/dll
Group: Malware file
Last Updated: December 11, 2009
fyso0.dll File name: fyso0.dll
Size: 24.09 KB (24096 bytes)
MD5: a0f93b371bdec4db972ed41b5d93165e
Detection count: 1
File type: Dynamic link library
Mime Type: unknown/dll
Group: Malware file
Last Updated: December 11, 2009

More files

Registry Modifications

The following newly produced Registry Values are:

Regexp file mask%WINDIR%\Logo1_.exe%WINDIR%\rundl132.exe

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