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Removal instructions for Antivirii 2011

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Metallica

Metallica

    Spyware Veteran

  • GeekU Moderator
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Content is republished with permission from Malwarebytes.

What is Antivirii 2011?

The Malwarebytes research team has determined that Antivirii 2011 is a fake anti-malware application. These so-called "rogues" use intentional false positives to convince users that their systems have been compromised. Then they try to sell you their software, claiming it will remove these threats. In extreme cases the false threats are actually the very trojans that advertise or even directly install the rogue. You are strongly advised to follow our removal instructions below.

How do I know if I am infected with Antivirii 2011?

This is how the main screen of the rogue application looks:

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You will find this icon in your taskbar alternating with the yellow and blue shield:

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And see these warnings:

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How did Antivirii 2011 get on my computer?

Rogue programs use different methods for spreading themselves. This particular one was installed by a trojan.

How do I remove Antivirii 2011?

Our program Malwarebytes' Anti-Malware can detect and remove this rogue application.
  • Please download Malwarebytes' Anti-Malware to your desktop.
  • Double-click mbam-setup.exe and follow the prompts to install the program.
  • At the end, be sure a check-mark is placed next to the following:

    • Update Malwarebytes' Anti-Malware
    • Launch Malwarebytes' Anti-Malware
  • Then click Finish.
  • If an update is found, it will download and install the latest version.
  • Once the program has loaded, select Perform quick scan, then click Scan.
  • When the scan is complete, click OK, then Show Results to view the results.
  • Be sure that everything is checked, and click Remove Selected. Reboot your computer if prompted.
  • When completed, a log will open in Notepad. The rogue application should now be gone.

Is there anything else I need to do to get rid of Antivirii 2011?

  • No, Malwarebytes' Anti-Malware removes Antivirii 2011 completely.

How would the full version of Malwarebytes' Anti-Malware help protect me?

We hope our application has helped you eradicate this malicious software. If your current security solution let this infection through, you might please consider purchasing the FULL version of Malwarebytes' Anti-Malware for additional protection.

As you can see below the full version of Malwarebytes' Anti-Malware would have protected you against the Antivirii 2011 rogue. It would have warned you before the rogue could install itself, giving you a chance to stop it before it became too late.


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Technical details for experts

Signs in a HijackThis log:
C:\WINDOWS\antivirii.exe

O4 - HKLM\..\Run: [Security] C:\Windows\ksqgimit.exe

Note: the filename in the startup is random

Alterations made by the installer:
  File System
  ===============
    In the existing folder C:\WINDOWS
      Adds the file antivirii.exe"="13:25 11/12/11 1034752 bytes
      Adds the file ksqgimit.exe"="13:25 11/12/11 1034752 bytes

  Registry
  ===============
    [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
      "Security"="'C:\Windows\ksqgimit.exe'"
    [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\taskmgr.exe]
      "Debugger"="'C:\xhergjui.exe'"


Malwarebytes' Anti-Malware log:
Malwarebytes' Anti-Malware 1.51.2.1300
www.malwarebytes.org

Database version: 8393

Windows 5.1.2600 Service Pack 3
Internet Explorer 8.0.6001.18702

12/18/2011 5:12:05 PM
mbam-log-2011-12-18 (17-12-05).txt

Scan type: Quick scan
Objects scanned: 145024
Time elapsed: 1 minute(s), 1 second(s)

Memory Processes Infected: 1
Memory Modules Infected: 0
Registry Keys Infected: 1
Registry Values Infected: 1
Registry Data Items Infected: 0
Folders Infected: 0
Files Infected: 3

Memory Processes Infected:
c:\WINDOWS\antivirii.exe (Trojan.FakeAlert) -> 252 -> Unloaded process successfully.

Memory Modules Infected:
(No malicious items detected)

Registry Keys Infected:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\SETUP.EXE (Trojan.Dropper) -> Quarantined and deleted successfully.

Registry Values Infected:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Security (Trojan.FakeAlert) -> Value: Security -> Quarantined and deleted successfully.

Registry Data Items Infected:
(No malicious items detected)

Folders Infected:
(No malicious items detected)

Files Infected:
c:\WINDOWS\antivirii.exe (Trojan.FakeAlert) -> Quarantined and deleted successfully.
c:\WINDOWS\ksqgimit.exe (Trojan.FakeAlert) -> Quarantined and deleted successfully.
c:\documents and settings\{username}\Desktop\Setup.exe (Trojan.Dropper) -> Quarantined and deleted successfully.


As mentioned before the full version of Malwarebytes' Anti-Malware could have protected your computer against this threat.
We use different ways of protecting your computer(s):
  • Dynamically Blocks Malware Sites & Servers
  • Malware Execution Prevention
Save yourself the hassle and get protected.
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