I had the same problem with [email protected]
@@k.dll. Maybe catched with trainer for game (duke nukem forever).
No file on location, but always alerts by Emsisoft Anti-Malware (but no by other antivirus software).
Scanned registry manually, hdd manually and so on.. nothing found.
With OTL and OTL-script I could solve the problem.
Now Emsisoft Anti-Malware find nothings anymore.
[P.S. Process was a little bit complicated; not for all users. Maybe Emsisoft Anti-Malware could solve such problems for its own soon!?]