ClamScan Signature File Problem?

Suddenly clamscan (clamtk,clamav) finds it on every computer. Could be a virus that gets around well, or it could be a virus signature table defect.


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-------START FRESH CLAM UPDATE 20140306-024521 -------
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ClamAV update process started at Thu Mar 6 02:45:21 2014
DON'T PANIC! Read http://www.clamav.net/support/faq
main.cvd is up to date (version: 55, sigs: 2424225, f-level: 60, builder: neo)
daily.cld is up to date (version: 18538, sigs: 805203, f-level: 63, builder: neo)
bytecode.cld is up to date (version: 236, sigs: 43, f-level: 63, builder: dgoddard)
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-------START VIRUS SCAN ON MICROSOFT PARTITION 20140306-024527 -------
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/d/Windows/System32/drivers/nvstor.sys: Win.Worm.Autorun-4414 FOUND
/d/Windows/System32/drivers/sisraid4.sys: Win.Worm.Autorun-4415 FOUND
/d/Windows/System32/DriverStore/FileRepository/nvraid.inf_x86_neutral_0276fc3b3ea60d41/nvstor.sys: Win.Worm.Autorun-4414 FOUND
/d/Windows/System32/DriverStore/FileRepository/nvraid.inf_x86_neutral_dd659ed032d28a14/nvstor.sys: Win.Worm.Autorun-4414 FOUND
/d/Windows/System32/DriverStore/FileRepository/sisraid4.inf_x86_neutral_65ab84e9830f6f4b/sisraid4.sys: Win.Worm.Autorun-4415 FOUND
/d/Windows/winsxs/x86_nvraid.inf_31bf3856ad364e35_6.1.7601.17514_none_3be22d131d40bd72/nvstor.sys: Win.Worm.Autorun-4414 FOUND
/d/Windows/winsxs/x86_nvraid.inf_31bf3856ad364e35_6.1.7601.17577_none_3ba44e691d6eb11d/nvstor.sys: Win.Worm.Autorun-4414 FOUND
/d/Windows/winsxs/x86_nvraid.inf_31bf3856ad364e35_6.1.7601.21680_none_3c1c1942369abb77/nvstor.sys: Win.Worm.Autorun-4414 FOUND
/d/Windows/winsxs/x86_sisraid4.inf_31bf3856ad364e35_6.1.7600.16385_none_2818a03f1981d8b1/sisraid4.sys: Win.Worm.Autorun-4415 FOUND

———– SCAN SUMMARY ———–
Known viruses: 3224077
Engine version: 0.97.8
Scanned directories: 16254
Scanned files: 90882
Infected files: 9
Data scanned: 14072.15 MB
Data read: 30367.52 MB (ratio 0.46:1)
Time: 6360.069 sec (106 m 0 s)
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