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  3. PHP.RSTBackdoor


Risk Level 1: Very Low

July 13, 2005
February 13, 2007 12:42:10 PM
Trojan Horse
Systems Affected:
Linux, Macintosh, Macintosh OS X, Microsoft IIS, Novell Netware, UNIX, Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows Server 2003, Windows XP

PHP.RSTBackdoor is a back door Trojan that is written in PHP. It runs only on HTTP servers with PHP interpreters installed.

Antivirus Protection Dates

  • Initial Rapid Release version July 15, 2005
  • Latest Rapid Release version March 18, 2015 revision 004
  • Initial Daily Certified version July 15, 2005 revision 002
  • Latest Daily Certified version March 18, 2015 revision 016
  • Initial Weekly Certified release date July 20, 2005
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.

Threat Assessment


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


  • Damage Level: Medium


  • Distribution Level: Low
Note: On May 14, 2015, modifications will be made to the threat write-ups to streamline the content. The Threat Assessment section will no longer be published as this section is no longer relevant to today's threat landscape. The Risk Level will continue to be the main threat risk assessment indicator.
Writeup By: Takayoshi Nakayama

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