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February 23, 2009 4:13 PM PST

New scareware sends you to fake Download.com reviews

by Seth Rosenblatt
  • 30 comments

Last week, BleepingComputer.com reported on how to remove a new variant of an old scareware. This new nasty, known most commonly as Antivirus2010 or Anti-Virus-1, points you to spoofed versions of Download.com, ZDNet, PCMag.com, and other software sites, demanding that you download their program to clean your computer. Of course, it does nothing of the sort, merely perpetuating the infection.

Antivirus2010, Anti-Virus-1, and other variants of the AntivirusXP infection have never been hosted on Download.com.

(Credit: Seth Rosenblatt/CNET Networks)

However, the manner and methods Anti-Virus-1 uses to get you there are extremely clever. The infection part of the malware does whatever it's been designed to do, so you can see that you've been infected with malware. What you don't realize at this point is that it's hacked your hosts file, too, so that when you go to a software site you don't ever make it to the site you're trying to get to.

You wind up on a skinned Web site that looks like the site you're expecting, but isn't. With the Download.com spoof, you can see that they're using our old design, which CNET abandoned last summer. Clicking on any link besides the download button will take you to the same page that the legitimate site would've taken you to. Hit the download button, though, and you get their fake malware remover, which in fact does the opposite, perpetuating the infection.

Removing the infection is tricky because of the differences between the variants. Some people have complained that they get locked out of their Task Manager, for example, but not all reports include that complaint. The fix that I cited for Antivirus XP 2008 may work, but users who have Windows XP Home Edition don't have a gpedit.msc. Home Edition users will have to edit their Registry directly.

Malwarebytes' Anti-Malware has proven to be one of the few malware killers that can effectively remove Antivirus XP 2008 and its variants, and it should work against the latest ones, too. The First Look video of Malwarebytes' Anti-Malware on the right will help you get started with the program.

Keep in mind that there is no substitute for cautious browsing. Don't install every Facebook app that comes your way, don't click on ads on unfamiliar sites or sites that are known vectors for attacks, and don't install software from anybody that's not a vouchsafed source.

I've pasted below the entire list from BleepingComputer of changes to your hosts file for your edification. Be warned that it may change as variants are developed.

O1 - Hosts: 217.20.175.74 www.review.2009softwarereviews.com

O1 - Hosts: 217.20.175.74 review.2009softwarereviews.com

O1 - Hosts: 217.20.175.74 a1.review.zdnet.com

O1 - Hosts: 217.20.175.74 www.d1.reviews.cnet.com

O1 - Hosts: 217.20.175.74 www.reviews.toptenreviews.com

O1 - Hosts: 217.20.175.74 reviews.toptenreviews.com

O1 - Hosts: 217.20.175.74 www.reviews.download.com

O1 - Hosts: 217.20.175.74 reviews.download.com

O1 - Hosts: 217.20.175.74 www.reviews.pcadvisor.c.uk

O1 - Hosts: 217.20.175.74 reviews.pcadvisor.co.uk

O1 - Hosts: 217.20.175.74 www.reviews.pcmag.com

O1 - Hosts: 217.20.175.74 reviews.pcmag.com

O1 - Hosts: 217.20.175.74 www.reviews.pcpro.co.uk

O1 - Hosts: 217.20.175.74 reviews.pcpro.co.uk

O1 - Hosts: 217.20.175.74 www.reviews.reevoo.com

O1 - Hosts: 217.20.175.74 reviews.reevoo.com

O1 - Hosts: 217.20.175.74 www.reviews.riverstreams.co.uk

O1 - Hosts: 217.20.175.74 reviews.riverstreams.co.uk

O1 - Hosts: 217.20.175.74 www.reviews.techradar.com

O1 - Hosts: 217.20.175.74 reviews.techradar.com

(Via Ars Technica)

September 15, 2008 11:20 AM PDT

How to remove Antivirus XP 2008

by Seth Rosenblatt
  • 187 comments
Update: Revised instructions to include folder deletion.

Antivirus XP 2008 is back, unfortunately. It's not an antivirus app, but a cleverly disguised rogue security application that tries to get you to buy the non-existent "security" it's selling. Advertised using the common tricks of Trojans and faux security alerts, this nasty piece of malware can take over your desktop settings to mimic safe mode, display fake virus detections, and opens a faux Internet Explorer window stating that Google has detected a malware infection.

Antivirus XP 2008's Web site looks legit, but caveat emptor.

Yeah, Google.

Apparently, though, the virus is now being spread in more insidious ways, and numerous people who claim safe browsing habits and up-to-date security definitions are being infected--including two of my friends.

In helping them remove it, I discovered an excellent post on the CNET Forums that explained a detailed and accurate method of removal. I've retyped it below with more detail in case you're not able to get to the forums. It's not particularly complicated, but if you're not comfortable with advanced settings, I'd recommend proceeding cautiously or get a friend to help.

The scan window from Antivirus XP 2008 also looks legit. It's also not.

A warning before we begin: do not boot your computer into safe mode. Leave it running as you normally would. I tried restarting into safe mode, and the malware was prepared for that--its folders and files became undetectable.

First, in the Start menu, click on Run. If you can't find the Run option, hit WIN+R. (That's the key with the Windows icon on it.)

Type in msconfig, and go to the Startup tab. You're looking for two files. One begins with the string of letters "lph," and the second begins with "rhc". The examples provided are longer strings, "lphc35dj0e1an" and "rhc75dj0e1an", but after the first three letters, the strings are known to change on different computers. Uncheck the boxes next to both of them, then click on Apply and OK or Close at the bottom of the window.

The scan window from an older version of Antivirus XP 2008.

Restart your computer, and then delete the main files the spyware uses. In Windows Explorer, navigate to C:\windows\system32 and delete the lph*.exe file. Then go to your Program Files folder, C:\program files, and delete the rhc folder and everything in it. Keep in mind that these strings are known to change.

Restart your computer normally. You'll notice that the background hasn't changed. To restore your desktop settings, you'll need to go to Start > Run again, or Win+R. This time, type in Gpedit.msc. On the left nav, look for User Configuration near the middle. Navigate through Administrative Templates, then Control Panel, and finally Display. When you click on display, you'll see a list of options open in the central pane. Right click on "Remove Display in Control Panel," and click "Properties." Then choose "Disabled."

Repeat those same steps for the following attributes: Hide Desktop, Prevent changing wallpaper, Hide Appearance and Themes, Hide Settings, and Hide Screen Saver. Change all to "Disabled," then hit Apply, OK, and restart your computer.

You will still see the Antivirus XP 2008 desktop "theme", but now you can change it. Anywhere on your desktop, right-click and select properties. The first tab that opens should allow you to change your theme. If you also suffer from massive icons, use the last tab on the right, Settings. In the middle of that tab's window you'll see a Screen Resolution option, most likely set to 800x600. Move the slider to the left to choose a more aesthetically appealing resolution.

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