Infection still found after removal

[Kenyon East]

Malwarebytes still returns an infection even after removing the infection and deleting the folder it was originally contained in. The infection is always found within a second or two of starting the scan. The file listed and the folder have both been deleted and are no longer on the computer. It is someone else's computer so I would really like for it not to show this infection when it is no longer there. Here's the log:

Malwarebytes' Anti-Malware 1.46

www.malwarebytes.org

Database version: 4239

Windows 6.0.6002 Service Pack 2

Internet Explorer 8.0.6001.18904

7/17/2010 3:49:27 PM

mbam-log-2010-07-17 (15-49-27).txt

Scan type: Full scan (C:\|Z:\|)

Objects scanned: 219645

Time elapsed: 1 hour(s), 2 minute(s), 59 second(s)

Memory Processes Infected: 0

Memory Modules Infected: 0

Registry Keys Infected: 0

Registry Values Infected: 0

Registry Data Items Infected: 0

Folders Infected: 0

Files Infected: 1

Memory Processes Infected:

(No malicious items detected)

Memory Modules Infected:

(No malicious items detected)

Registry Keys Infected:

(No malicious items detected)

Registry Values Infected:

(No malicious items detected)

Registry Data Items Infected:

(No malicious items detected)

Folders Infected:

(No malicious items detected)

Files Infected:

C:\Users\Louis\AppData\Local\Temp\low\COUPON~1.DLL (Trojan.BHO.H) -> Quarantined and deleted successfully.

I just want to know why the program keeps finding this infection when it's not there anymore.

[screen317]

Hi and welcome to Malwarebytes.

Please download CCleaner and save it to your desktop.

• Run the CCleaner installer.
  
• During installation process, please UNCHECK "Add CCleaner Yahoo! Toolbar".
  
• Please do NOT run a scan yet!
  

Now, open CCleaner:

• Click the "Windows" tab.
  
• Select the following:
  • Check everything under the "Internet Explorer" section.
    
  • Check everything under the "Windows Explorer" section.
    
  • Check everything under the "System" section.
    
  • Check ONLY "Old Prefetch data" under the "Advanced" section.
    

  [*]Then, click the "Applications" tab:

  • CHECK everything there.
    

  [*]Next, click the "Options" button in the left pane, then click the "Advanced" button:

  • CHECK : "Only delete files in Windows Temp folders older than 48 hours".
    

  [*]Next, click the "Cleaner" button in the left pane, then click the "Run Cleaner" button (bottom right), click "OK" at the prompt.

  [*]When done, please exit CCleaner.

CAUTION: Please do NOT use the "Issues" button in the left pane. This is a built-in registry cleaner. If you don

[screen317]

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