Sophos

W32/Pardona-A

Aliases
  • Win32/Pardona.B
  • Email-Worm.Win32.Small.f
Category
Type
What to do
Prevalence low high

Summary

 
How it spreads
  • Email messages
  • Network shares
  • Infected files
Affected operating systems Windows
Characteristics
  • Installs itself in the registry
Included in our products from January 2007 (4.13)
Protection available since 13 November 2006 21:06:56 (GMT)
Detected by All Sophos products

Action

More Information

W32/Pardona-A is a virus for the Windows platform.

The virus attempts to infect EXE files, and to modify HTM and ASP files so that they silently download from a remote webiste.

W32/Pardona-A may spread to other network computers and may also spread via email.

W32/Pardona-A also includes functionality to download, install and run new software. W32/Pardona-A is a virus for the Windows platform.

The virus attempts to infect EXE files, and to modify HTM and ASP files so that they silently download from a remote webiste.

W32/Pardona-A may spread to other network computers and may also spread via email.

W32/Pardona-A also includes functionality to download, install and run new software.

When first run W32/Pardona-A copies itself to <Windows system folder>\ePower.exe and to several files of the form <Temp>\<random letters>

Each of these files is either identical to, or slight variants of, the original file. All will be detected as W32/Pardona-A.

The virus also creates the file C:\WINDOWS\System32\<random letters>.sys

This SYS file is registered as a new system driver service named "SysDrver", with a display name of "System SSDP Services". Registry entries are created under:

HKLM\SYSTEM\CurrentControlSet\Services\SysDrver\

The SYS file, which is detected as Troj/Pardot-A, uses stealth functionality to hide processes creates by W32/Pardona-A.

The virus attempts to download and execute a file to the following location:

C:\tool.exe

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