Summary

Summary
Action
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| Affected operating systems | Windows |
|---|---|
| Characteristics |
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| Protection available since | 8 February 2008 23:57:33 (GMT) |
| Detected by | All Sophos products |
- Free virus, spyware, and adware scan
- Test your existing anti-virus protection
- Find threats your anti-virus missed
Action

Summary
Action
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Please follow the instructions for removing Trojans.
More Information
Troj/Dropper-TP is a Trojan for the Windows platform.
When Troj/Dropper-TP runs, it overwrites <System>\drivers\null.sys with a malicious file also named null.sys. This malicious file is proactively detected by Sophos as Mal/Behav-010.
Customers need to restore null.sys from backup.
