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  3. Perl.Santy

Perl.Santy

Risk Level 2: Low

Discovered:
December 21, 2004
Updated:
February 13, 2007 12:31:16 PM
Also Known As:
Perl.Santy.A [Computer Associa, Santy [F-Secure], Net-Worm.Perl.Santy.a [Kaspers, Perl/Santy.worm [McAfee], PHP/Santy.A.worm [Panda], Perl/Santy-A [Sophos], WORM_SANTY.A [Trend Micro]
Type:
Worm
Systems Affected:
UNIX, Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows Server 2003, Windows XP


Perl.Santy is a worm written in Perl script that attempts to spread to Web servers running versions of the phpBB 2.x bulletin board software prior to 2.0.11, which are vulnerable to the PHPBB Viewtopic.PHP PHP Script Injection Vulnerability (BID 10701). Other systems are not affected. If successful, the worm copies itself to the server and overwrites the files with the following extensions:
  • .asp
  • .htm
  • .jsp
  • .php
  • .phtm
  • .shtm

The worm uses the Google search engine to find potential new infection targets. Google has now implemented blocking Perl.Santy search requests, which is expected to greatly reduce the worm's ability to propagate and lower the risk of further infections.

Antivirus Protection Dates

  • Initial Rapid Release version December 21, 2004
  • Latest Rapid Release version September 28, 2010 revision 054
  • Initial Daily Certified version December 21, 2004
  • Latest Daily Certified version September 28, 2010 revision 036
  • Initial Weekly Certified release date December 21, 2004
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.

Threat Assessment

Wild

  • Wild Level: Medium
  • Number of Infections: 0 - 49
  • Number of Sites: 0 - 2
  • Geographical Distribution: Low
  • Threat Containment: Easy
  • Removal: Easy

Damage

  • Damage Level: Medium

Distribution

  • Distribution Level: High
Writeup By: Jeong Mun

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