Where to find malware on a Windows box

Here's a good guide to all the places in a Windows installation that a worm or virus can hide itself.

2. REGISTRY. Windows executes all instructions in the "Run" section of the Windows Registry. Items in the "Run" section (and in other parts of the Registry listed below) can be programs or files that programs open (documents), as explained in No. 1 above.

3. REGISTRY. Windows executes all instructions in the "RunServices" section of the Registry.

4. REGISTRY. Windows executes all instructions in the "RunOnce" part of the Registry.

Link (via Red Ferret Journal)