The Klez worm is a mass-mailing worm that exploits a vulnerability to open an executable...

Vendor: SANS
Product: SEC504
Update on: Jan 10, 2026
Questions: 328

SANS SEC504 Question Answer

The Klez worm is a mass-mailing worm that exploits a vulnerability to open an executable attachment even in Microsoft Outlook's preview pane. The Klez worm gathers email addresses from the entries of the default Windows Address Book (WAB). Which of the following registry values can be used to identify this worm?

HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunServices

HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run

HKEY_CURRENT_USER\Software\Microsoft\WAB\WAB4\Wab File Name = "file and pathname of the WAB file"

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run