Full Version of this article can be found here

pilif.exe

pilif.exe


What is it?
pilif.exe is a file associated with the w32.Fili@mm worm.

What does it do?
W32.Fili@mm is a generic Visual Basic worm that propagates via Microsoft Outlook and through peer-to-peer file-sharing networks. It can also spread via mIRC.

When W32.Fili@mm runs, it performs the following actions:
  1. Copies itself to %System%pilif.exe.

    Note: %System% is a variable that refers to the System folder. By default, this is C:WindowsSystem (Windows 95/98/Me), C:WinntSystem32 (Windows NT/2000), or C:WindowsSystem32 (Windows XP).
  2. Adds the value:

    "Pilif" = "%System%pilif.exe"

    to the registry key:

    HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionRun

    so that the worm runs when Windows starts.
  3. Creates the following files:
    • %System%adrbook
    • mIRC folderManifesto Anti Censore Pilif.txt.exe
  4. Searches for KaZaA, Morpheus, eDonkey, Grokster, limewire, ICQ, and WinMX-shared directories and copies itself as:
    • Norton 2004 crack
    • Kasperky AV Universal Key
    • Dark Coderz Alliance
    • Anti-hacker Utility
    • Cracks mega warez collection
    • Sex - totally free porn
    • Easy credit card validation
    • Yahoo hacker
    • Webmail official hacker
    • Free porn sites accounts
  5. Adds the value:
"DisableTaskMgr" = "00000001"

To the registry key:
HKEY_CURRENT_USERSoftwareMicrosoftWindowsCurrentVersion
PoliciesSystem

to disable the task manager.

More info and removal instructions
@symantec