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Panda Protection

Virus Encyclopedia

Welcome to the Virus Encyclopedia of Panda Security.

Spammer.ANJ

Threat LevelLow threatDamageHighDistributionNot widespread
Common name:Spammer.ANJ
Technical name:Trj/Spammer.ANJ
Threat level:Medium
Type:Trojan
Effects:   It allows to get into the affected computer. It mass mails junk mail (spam). It uses stealth techniques to avoid being detected by the user. It spreads , across the Internet, via email, through P2P programs.
Affected platforms:

Windows 2003/XP/2000/NT/ME/98/95

First detected on:July 21, 2009
Detection updated on:June 7, 2010
StatisticsNo
Proactive protection:
Yes, using TruPrevent Technologies

Brief Description 

    

Spammer.ANJ is a Trojan, which although seemingly inoffensive, can actually carry out attacks and intrusions.

 

  • On remote sites: it mass mails junk mail (spam).

 

It uses stealth techniques to avoid being detected by the user:

  • It terminates processes corresponding to several security tools, such as antivirus programs and firewalls, to prevent detection.

 

Spammer.ANJ uses the following propagation or distribution methods:

  • Exploiting vulnerabilities with the intervention of the user: exploiting vulnerabilities in file formats or applications. To exploit them successfully it needs the intervention of the user: opening files, viewing malicious web pages, reading emails, etc.
  • Via Internet, exploiting remote vulnerabilities: attacking random IP addresses, in which it tries to insert a copy of itself by exploiting one or more vulnerabilities.
  • Email: sending emails that include a copy of itself as an attachment. The computer is infected when the attachment is run.
  • Peer-to-peer (P2P) file sharing programs: it makes copies of itself with enticing names in shared folders belonging to these programs. Other users of this type of networks then voluntarily download and run the infected files.