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Removal instructions for BoanCatch

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Content is republished with permission from Malwarebytes.

What is BoanCatch?

The Malwarebytes research team has determined that BoanCatch 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 BoanCatch?

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 BoanCatch get on my computer?

Rogue programs use different methods for spreading themselves. This particular one was downloaded from their site.

How do I remove BoanCatch?

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 BoanCatch?
  • The shortcut called ����ijġ on the desktop can be deleted if it belonged to the rogue.

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 BoanCatch 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:\Program Files\BoanCatch\BoanCatch.exe
C:\Program Files\BoanCatch\BoanCatchMtr.exe

O4 - HKLM\..\Run: [BoanCatch] "C:\Program Files\BoanCatch\BoanCatch.exe" /run1

Alterations made by the installer:

  File System
    In the existing folder C:\Documents and Settings\All Users\Desktop
      Adds the file ����ijġ.lnk"="11:23 22/01/12 694 bytes
    Adds the folder C:\Documents and Settings\All Users\Start Menu\Programs\����ijġ
      Adds the file ����ijġ.lnk"="11:23 22/01/12 706 bytes
      Adds the file ����ijġ ����.lnk"="11:23 22/01/12 513 bytes
    Adds the folder C:\Program Files\BoanCatch
      Adds the file uninst.exe"="11:23 22/01/12 148526 bytes
      Adds the file BoanCatchuck.exe"="09:45 28/12/11 613000 bytes
      Adds the file BoanCatchMtr.exe"="09:45 28/12/11 918664 bytes
      Adds the file BoanCatch.exe"="09:45 28/12/11 5764744 bytes

    [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths\BoanCatch.exe]
      "(Default)"="'C:\Program Files\BoanCatch\BoanCatch.exe'"
      "BoanCatch"="'"C:\Program Files\BoanCatch\BoanCatch.exe" /run1'"
      "DisplayIcon"="'C:\Program Files\BoanCatch\BoanCatch.exe'"
      "UninstallString"="'C:\Program Files\BoanCatch\uninst.exe'"

Malwarebytes' Anti-Malware log:
Malwarebytes Anti-Malware

Database version: v2012.01.22.02

Windows XP Service Pack 3 x86 NTFS
Internet Explorer 8.0.6001.18702
{username} :: MBAM-D3E8C91ACC [administrator]

1/22/2012 11:28:27 AM
mbam-log-2012-01-22 (11-28-27).txt

Scan type: Quick scan
Scan options enabled: Memory | Startup | Registry | File System | Heuristics/Extra | Heuristics/Shuriken | PUP | PUM
Scan options disabled: P2P
Objects scanned: 150706
Time elapsed: 1 minute(s), 23 second(s)

Memory Processes Detected: 2
C:\Program Files\BoanCatch\BoanCatch.exe (Rogue.BoanCatch) -> 1312 -> Delete on reboot.
C:\Program Files\BoanCatch\BoanCatchMtr.exe (Rogue.BoanCatch) -> 1588 -> Delete on reboot.

Memory Modules Detected: 0
(No malicious items detected)

Registry Keys Detected: 5
HKLM\SOFTWARE\BoanCatch (Rogue.BoanCatch) -> Quarantined and deleted successfully.
HKLM\SOFTWARE\BoanCatchPartner (Rogue.BoanCatch) -> Quarantined and deleted successfully.
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths\BoanCatch.exe (Rogue.BoanCatch) -> Quarantined and deleted successfully.
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\BoanCatch (Rogue.BoanCatch) -> Quarantined and deleted successfully.
HKLM\SOFTWARE\MICROSOFT\WINDOWS\JECOMM (Rogue.BoanCatch) -> Quarantined and deleted successfully.

Registry Values Detected: 2
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run|BoanCatch (Rogue.BoanCatch) -> Data: "C:\Program Files\BoanCatch\BoanCatch.exe" /run1 -> Quarantined and deleted successfully.
HKLM\SOFTWARE\Microsoft\Windows\jecomm|BoanCatch (Rogue.BoanCatch) -> Data: 2012012211 -> Quarantined and deleted successfully.

Registry Data Items Detected: 0
(No malicious items detected)

Folders Detected: 1
C:\Program Files\BoanCatch (Rogue.BoanCatch) -> Delete on reboot.

Files Detected: 5
C:\Program Files\BoanCatch\BoanCatch.exe (Rogue.BoanCatch) -> Delete on reboot.
C:\Program Files\BoanCatch\BoanCatchMtr.exe (Rogue.BoanCatch) -> Delete on reboot.
C:\Documents and Settings\{username}\Desktop\BoanCatch_setup.exe (Rogue.BoanCatch) -> Quarantined and deleted successfully.
C:\Program Files\BoanCatch\BoanCatchuck.exe (Rogue.BoanCatch) -> Quarantined and deleted successfully.
C:\Program Files\BoanCatch\uninst.exe (Rogue.BoanCatch) -> 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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