Computer Viruses To Be Made Aware Of

Day-after-day newfangled computer viruses are created to irritate us and to wreck mayhem on our computer systems. Below are ten viruses presently referenced as being the most prevalent in terms of being seen the most or in their ability to possibly cause harm. New viruses are created every day. This is by no means an all-encompassing list. The most beneficial thing you can do is to remain watchful, keep your anti-virus software updated, and stay cognisant of the current computer virus menaces.

Virus: Trojan.Lodear
A Trojan horse that sets about to download remote files. It will interject a .dll file into the EXPLORER.EXE process causing system unbalance.

Virus: W32.Beagle.CO@mm
A mass-mailing worm that brings down security settings. It can erase security-related registry sub keys and may block off access to security-related websites.

Virus: Backdoor.Zagaban
A Trojan horse that allows the compromised computer to be used as a covert proxy and which may take down network functioning.

Virus: W32/Netsky-P
A mass-mailing worm which circulates by emailing itself to addresses created from files on the local drives.

Virus: W32/Mytob-GH
A mass-mailing worm and IRC backdoor Trojan for the Windows platform. Messages sent by this worm will have the subject selected at random from a list including titles such as: Notice of account limitation, Email Account Suspension, Security measures, Members Support, Important Notification.

Virus: W32/Mytob-EX
A mass-mailing worm and IRC backdoor Trojan similar in nature to W32-Mytob-GH. W32/Mytob-EX runs endlessly in the background, supplying a backdoor server which allows a remote trespasser to gain access and control over the computer thru IRC channels. This virus unfolds by sending itself to email attachments harvested from your email addresses.

Virus: W32/Mytob-AS, Mytob-BE, Mytob-C, and Mytob-ER
This family of worm variations possesses similar features in terms of what they can do. They are mass-mailing worms with backdoor functionality that can be commanded through the Internet Relay Chat (IRC) network. Additionally, they can disperse through email and through assorted operating system vulnerabilities such as the LSASS (MS04-011).

Virus: Zafi-D
A mass mailing worm and a P2P (peer to peer) worm which replicates itself to the Windows system folder with the filename Norton Update.exe. It can then create a number of files in the Windows system folder with filenames consisting of 8 random characters and a DLL extension. W32/Zafi-D copies itself to folders with names containing share, upload, or music as ICQ 2005a new!.exe or winamp 5.7 new!.exe. W32/Zafi-D will also display a fake error message box with the caption "CRC: 04F6Bh" and the text "Error in packed file!".

Virus: W32/Netsky-D
A mass-mailing worm with IRC backdoor functionality which may also infect computers vulnerable to the LSASS (MS04-011) exploit.

Virus: W32/Zafi-B
A peer-to-peer (P2P) and email worm that will replicate itself to the Windows system folder as a randomly named EXE file. This worm will test for the presence of an internet connection by attempting to connect to www.google.com or www.microsoft.com. A bilingual, worm with an attached Hungarian political text message box which translates to “We demand that the government accommodates the homeless, tightens up the penal code and VOTES FOR THE DEATH PENALTY to cut down the increasing crime. Jun. 2004, Pécs (SNAF Team)”

By: DM Hinman

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