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I just ran Malwarebytes and it found a few pup.optional programs. Are these a problem? Should I simply delete them now or go through a possible malware cleaning here? Thanks.


Malwarebytes Anti-Malware 1.75.0.1300
www.malwarebytes.org

Database version: v2013.09.10.06

Windows XP Service Pack 3 x86 NTFS
Internet Explorer 8.0.6001.18702
John Austin Brewder :: JOHN [administrator]

9/10/2013 5:03:54 AM
MBAM-log-2013-09-10 (08-46-29).txt

Scan type: Full scan (C:\|)
Scan options enabled: Memory | Startup | Registry | File System | Heuristics/Extra | Heuristics/Shuriken | PUP | PUM
Scan options disabled: P2P
Objects scanned: 268885
Time elapsed: 1 hour(s), 51 minute(s), 52 second(s)

Memory Processes Detected: 0
(No malicious items detected)

Memory Modules Detected: 0
(No malicious items detected)

Registry Keys Detected: 2
HKCR\AppID\{72D89EBF-0C5D-4190-91FD-398E45F1D007} (PUP.Optional.DefaultTab.A) -> No action taken.
HKCU\SOFTWARE\INSTALLCORE (PUP.Optional.InstallCore.A) -> No action taken.

Registry Values Detected: 1
HKCU\Software\InstallCore|tb (PUP.Optional.InstallCore.A) -> Data: 0F -> No action taken.

Registry Data Items Detected: 0
(No malicious items detected)

Folders Detected: 0
(No malicious items detected)

Files Detected: 2
C:\Documents and Settings\John Austin Brewder\My Documents\Downloads\ZipOpenerSetup.exe (PUP.Optional.InstallCore) -> No action taken.
C:\WINDOWS\system32\roboot.exe (PUP.Optional.PCPerformer.A) -> No action taken.

(end)