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Removal instructions for OpenCloud Antivirus


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#1 Metallica

Metallica

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Posted 31 August 2011 - 03:35 AM

What is OpenCloud Antivirus?

The Malwarebytes research team has determined that OpenCloud Antivirus 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 OpenCloud Antivirus?

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

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You will find these icons on your desktop and in your taskbar:

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And see these warnings:

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How did OpenCloud Antivirus get on my computer?

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

How do I remove OpenCloud Antivirus?

Our program Malwarebytes' Anti-Malware can detect and remove this rogue application.
  • Please download Malwarebytes' Anti-Malware from here
    If you are unable to do this from the infected computer directly, transfer the file from another computer.
  • Download the mbam-setup.exe to your desktop.
  • Now make sure extensions are shown. To do this, please look here
  • Then rename the mbam-setup.exe: Posted Image to iexplore.exe
  • Then launch explorer.exe in order to install Malwarebytes' Anti-malware
  • Once Malwarebytes' Anti-Malware is installed, navigate to your Program Files\Malwarebytes' Anti-Malware folder and locate the mbam.exe in there:

    Posted Image

    rename it to iexplorer.exe:
  • Now doubleclick explorer.exe to launch Malwarebytes' Anti-malware.
  • Click the "Update" tab and click the "Check For updates" button.
  • Once the program has loaded and updates were downloaded, select "Perform Quick Scan", then click Scan.
  • The scan may take some time to finish,so please be patient.
  • When the scan is complete, click OK, then Show Results to view the results.
  • Make sure that everything is checked, and click Remove Selected.
  • When disinfection is completed, a log will open in Notepad and you may be prompted to Restart, so please allow MBAM to restart.
  • The log is automatically saved by MBAM and can be viewed by clicking the Logs tab in MBAM.

Is there anything else I need to do to get rid of OpenCloud Antivirus?

  • No, Malwarebytes' Anti-Malware removes OpenCloud Antivirus 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 OpenCloud Antivirus 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:\Documents and Settings\{username}\Application Data\OpenCloud Antivirus\OpenCloud Antivirus.exe

O2 - BHO: ADC PlugIn - {19090308-636D-4e9b-A1CE-A647B6F794BF} - C:\Documents and Settings\{username}\Application Data\OpenCloud Antivirus\sysl32.dll

Alterations made by the installer:
  File System
  ===============
    Adds the folder C:\Documents and Settings\{username}\Application Data\OpenCloud Antivirus
      Adds the file wf.conf"="09:56 31/08/11 1495 bytes
      Adds the file sysl32.dll"="09:56 31/08/11 679936 bytes
      Adds the file OpenCloud Antivirus.ico"="09:53 31/08/11 15086 bytes
      Adds the file OpenCloud Antivirus.exe"="00:56 28/08/11 2420224 bytes
    In the existing folder C:\Documents and Settings\{username}\Desktop
      Adds the file OpenCloud Antivirus.lnk"="09:53 31/08/11 2082 bytes
    Adds the folder C:\Documents and Settings\{username}\Start Menu\Programs\OpenCloud Antivirus
      Adds the file OpenCloud Antivirus.lnk"="09:53 31/08/11 2094 bytes

  Registry
  ===============
    [HKEY_CLASSES_ROOT\CLSID\{19090308-636D-4e9b-A1CE-A647B6F794BF}]
      "(Default)"="'ADC PlugIn'"
    [HKEY_CLASSES_ROOT\CLSID\{19090308-636D-4e9b-A1CE-A647B6F794BF}\InprocServer32]
      "ThreadingModel"="'Apartment'"
      "(Default)"="'C:\Documents and Settings\{username}\Application Data\OpenCloud Antivirus\sysl32.dll'"
    [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{19090308-636D-4e9b-A1CE-A647B6F794BF}]

Malwarebytes' Anti-Malware log:
Malwarebytes' Anti-Malware 1.51.1.1800
www.malwarebytes.org

Database version: 7618

Windows 5.1.2600 Service Pack 3
Internet Explorer 8.0.6001.18702

8/31/2011 10:10:16 AM
mbam-log-2011-08-31 (10-10-16).txt

Scan type: Quick scan
Objects scanned: 142500
Time elapsed: 20 second(s)

Memory Processes Infected: 1
Memory Modules Infected: 0
Registry Keys Infected: 3
Registry Values Infected: 0
Registry Data Items Infected: 0
Folders Infected: 2
Files Infected: 7

Memory Processes Infected:
c:\documents and settings\{username}\application data\opencloud antivirus\opencloud antivirus.exe (Trojan.Agent) -> 1764 -> Unloaded process successfully.

Memory Modules Infected:
(No malicious items detected)

Registry Keys Infected:
HKEY_CLASSES_ROOT\CLSID\{19090308-636D-4e9b-A1CE-A647B6F794BF} (Trojan.FakeAlert) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{19090308-636D-4E9B-A1CE-A647B6F794BF} (Trojan.FakeAlert) -> Quarantined and deleted successfully.
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Ext\Stats\{19090308-636D-4E9B-A1CE-A647B6F794BF} (Trojan.FakeAlert) -> Quarantined and deleted successfully.

Registry Values Infected:
(No malicious items detected)

Registry Data Items Infected:
(No malicious items detected)

Folders Infected:
c:\documents and settings\{username}\application data\opencloud antivirus (Rogue.OpenCloudAntivirus) -> Quarantined and deleted successfully.
c:\documents and settings\{username}\start menu\Programs\opencloud antivirus (Rogue.OpenCloudAntivirus) -> Quarantined and deleted successfully.

Files Infected:
c:\documents and settings\{username}\application data\opencloud antivirus\opencloud antivirus.exe (Trojan.Agent) -> Quarantined and deleted successfully.
c:\documents and settings\{username}\application data\opencloud antivirus\sysl32.dll (Trojan.FakeAlert) -> Quarantined and deleted successfully.
c:\documents and settings\{username}\Desktop\opencloud antivirus.exe (Trojan.Agent) -> Quarantined and deleted successfully.
c:\documents and settings\{username}\application data\opencloud antivirus\wf.conf (Rogue.OpenCloudAntivirus) -> Quarantined and deleted successfully.
c:\documents and settings\{username}\application data\opencloud antivirus\opencloud antivirus.ico (Rogue.OpenCloudAntivirus) -> Quarantined and deleted successfully.
c:\documents and settings\{username}\Desktop\opencloud antivirus.lnk (Rogue.OpenCloudAntivirus) -> Quarantined and deleted successfully.
c:\documents and settings\{username}\start menu\Programs\opencloud antivirus\opencloud antivirus.lnk (Rogue.OpenCloudAntivirus) -> 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.
Pieter Arntz
Malwarebytes Blogger

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