AVG was picking up HTML files all over
Sounds like a variant of Virut (Virtob)
, polymorphic file infectors with IRCBot
functionality which infects .exe, .scr and script files
(.PHP, .ASP, and .HTML), downloads more malicious files to your system, and opens a back door
that compromises your computer
Infectious Virut on the Loose
Win32/Virut.17408 is a polymorphic cavity “space filler” virus. Its entry point obscuring technique ensures that each file is infected in a unique way, which often complicates creation of detection and cure.
Aside from infecting executable files, Virut also targets HTML files
W32/Virut.h opens up backdoor on the compromised machine...
This virus tries to connect to IRC server located at:
And joins the channel named: virtu
The virus also attempts to infect files with the following extensions by injecting an iframe in to the body of each file:
The above iframe redirects the browser on the computer to the following location:
[http://]ZieF.pl/r[REMOVED]...The virus then modifies the hosts file by prepending the following strings to its body: 127.0.0.1 ZieF.pl...then opens a back door by joining a channel controlled by a remote attacker on one of the following IRC servers:
* irc.zief.pl on TCP port 80
* proxim.ircgalaxy.pl on TCP port 80
In many cases the infected files cannot be deleted
and anti-malware scanners cannot disinfect them properly. When disinfection is attempted, the files become corrupted and the system may become irreparable
Virut/Virux are contracted and spread by visiting remote
sites. These kind of sites are infested with a smörgåsbord of malware
and an increasing source of system infection. However, the CA Security Advisor Research Blog says they have found MySpace user pages carrying the malicious Virut URL
. Either way you can end up with a computer system so badly damaged that recovery is not possible and it cannot be repaired
. When that happens there is nothing you can do besides reformatting and reinstalling the OS.
If the computer was used for online banking, has credit card information or other sensitive data on it, you should disconnect from the Internet until your system is cleaned. All passwords should be changed immediately
to include those used for banking, email, eBay, paypal and online forums. You should consider them to be compromised
. You should change each password using a clean computer and not the infected one. If not, an attacker may get the new passwords and transaction information. If using a router
, you need to reset it with a strong logon/password so the malware cannot gain control before connect again. Banking and credit card institutions should be notified of the possible security breach. Because your computer was compromised please read:
There is no guarantee the infection can be completely removed
. In some instances an infection may have caused so much damage to your system that it cannot be completely cleaned or repaired. The malware may leave so many remnants behind that security tools cannot find them. Many experts in the security community believe that once infected with this type of malware, the best course of action is to wipe the drive clean, reformat and reinstall the OS. Reinstalling Windows without first wiping the entire hard drive with a repartition and/or format will not remove the infection. The reinstall will only overwrite the Windows files. Any malware on the system will still be there afterwards. Please read:
Edited by quietman7, 15 March 2009 - 04:48 PM.