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[Metallica]

Content is republished with permission from Malwarebytes.

What is InfoShield4?

The Malwarebytes research team has determined that InfoShield4 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 InfoShield4?

You will find this icon on your desktop:



And see these warnings:





You will regularly be shown this screen, where you are supposed to enter the code you have bought, to get the full version:



How did InfoShield4 get on my computer?

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

How do I remove InfoShield4?

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 InfoShield4?

• No, Malwarebytes Anti-Malware removes InfoShield4 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 InfoShield4 rogue. It would have warned you before the rogue could install itself, giving you a chance to stop it before it became too late.

Technical details for experts

Signs in a HijackThis log:

C:\Program Files\InfoShield4\InfoShield4.exe

O4 - HKLM\..\Run: [InfoShield4] "C:\Program Files\InfoShield4\InfoShield4.exe" /Hide

Alterations made by the installer:

  File System
  ===============
    In the existing folder C:\Documents and Settings\{username}\Application Data\Microsoft\Internet Explorer\Quick Launch
      Adds the file InfoShield4.lnk"="10:18 05/09/12 746 bytes
    In the existing folder C:\Documents and Settings\{username}\Desktop
      Adds the file InfoShield4.lnk"="10:18 05/09/12 728 bytes
    In the existing folder C:\Documents and Settings\{username}\Local Settings\Temp
      Adds the file InfoShield4up_down.exe"="10:18 05/09/12 1391132 bytes
    Adds the folder C:\Documents and Settings\{username}\Local Settings\Temp\nsq8.tmp
      Adds the file stack.dll"="10:14 05/09/12 10240 bytes
    In the existing folder C:\Documents and Settings\{username}\Start Menu
      Adds the file InfoShield4.lnk"="10:18 05/09/12 1610 bytes
    Adds the folder C:\Documents and Settings\{username}\Start Menu\Programs\InfoShield4
      Adds the file InfoShield4.lnk"="10:18 05/09/12 1622 bytes
      Adds the file InfoShield4 ����.lnk"="10:18 05/09/12 1594 bytes
    Adds the folder C:\Program Files\InfoShield4
      Adds the file Uninstall.exe"="10:18 05/09/12 89895 bytes
      Adds the file RepairCode.exe"="10:55 23/04/12 20480 bytes
      Adds the file RCEngine.dll"="10:34 23/04/12 655360 bytes
      Adds the file InfoShield4up.exe"="09:41 02/05/12 40960 bytes
      Adds the file InfoShield4Res.dll"="07:45 02/05/12 327680 bytes
      Adds the file InfoShield4.exe"="08:29 15/05/12 417792 bytes
      Adds the file filter.dll"="03:38 08/11/11 232 bytes
      Adds the file FilePathCheckerModuleExample.dll"="12:22 09/01/07 217229 bytes
      Adds the file adsub.dat"="09:16 13/03/12 233656 bytes
    Adds the folder C:\Program Files\InfoShield4\temp


  Registry
  ===============
    [HKEY_LOCAL_MACHINE\SOFTWARE\InfoShield4]
      "Install_Dir"="'C:\Program Files\InfoShield4'"
      "pid"="'home'"
    [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
      "InfoShield4"="'"C:\Program Files\InfoShield4\InfoShield4.exe" /Hide'"
    [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\InfoShield4]
      "DisplayIcon"="'"C:\Program Files\InfoShield4\Uninstall.exe"'"
      "UninstallString"="'C:\Program Files\InfoShield4\Uninstall.exe'"
      "DisplayName"="'InfoShield4.0 Uninstall'"

Malwarebytes Anti-Malware log:

Malwarebytes Anti-Malware 1.62.0.1300
www.malwarebytes.org

Database version: v2012.09.05.04

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

9/5/2012 10:22:17 AM
mbam-log-2012-09-05 (10-22-17).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: 170960
Time elapsed: 46 second(s)

Memory Processes Detected: 1
C:\Program Files\InfoShield4\InfoShield4.exe (Rogue.InfoShield4) -> 2044 -> Delete on reboot.

Memory Modules Detected: 0
(No malicious items detected)

Registry Keys Detected: 1
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\InfoShield4 (Rogue.InfoShield4) -> Quarantined and deleted successfully.

Registry Values Detected: 1
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run|InfoShield4 (Rogue.InfoShield4) -> Data: "C:\Program Files\InfoShield4\InfoShield4.exe" /Hide -> Quarantined and deleted successfully.

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

Folders Detected: 3
C:\Program Files\InfoShield4 (Rogue.InfoShield4) -> Delete on reboot.
C:\Program Files\InfoShield4\temp (Rogue.InfoShield4) -> Quarantined and deleted successfully.
C:\Documents and Settings\{username}\Start Menu\Programs\InfoShield4 (Rogue.InfoShield4) -> Quarantined and deleted successfully.

Files Detected: 16
C:\Documents and Settings\{username}\Desktop\InfoShield4_home.exe (Rogue.Ebiz.K) -> Quarantined and deleted successfully.
C:\Documents and Settings\{username}\Local Settings\Temp\InfoShield4up_down.exe (Rogue.Ebiz.K) -> Quarantined and deleted successfully.
C:\Documents and Settings\{username}\Local Settings\Temporary Internet Files\Content.IE5\O92WEW06\InfoShield4up_down[1].exe (Rogue.Ebiz.K) -> Quarantined and deleted successfully.
C:\Program Files\InfoShield4\adsub.dat (Rogue.InfoShield4) -> Quarantined and deleted successfully.
C:\Program Files\InfoShield4\FilePathCheckerModuleExample.dll (Rogue.InfoShield4) -> Quarantined and deleted successfully.
C:\Program Files\InfoShield4\filter.dll (Rogue.InfoShield4) -> Quarantined and deleted successfully.
C:\Program Files\InfoShield4\InfoShield4.exe (Rogue.InfoShield4) -> Delete on reboot.
C:\Program Files\InfoShield4\InfoShield4Res.dll (Rogue.InfoShield4) -> Quarantined and deleted successfully.
C:\Program Files\InfoShield4\InfoShield4up.exe (Rogue.InfoShield4) -> Quarantined and deleted successfully.
C:\Program Files\InfoShield4\RCEngine.dll (Rogue.InfoShield4) -> Quarantined and deleted successfully.
C:\Program Files\InfoShield4\RepairCode.exe (Rogue.InfoShield4) -> Quarantined and deleted successfully.
C:\Program Files\InfoShield4\Uninstall.exe (Rogue.InfoShield4) -> Quarantined and deleted successfully.
C:\Documents and Settings\{username}\Desktop\InfoShield4.lnk (Rogue.InfoShield4) -> Quarantined and deleted successfully.
C:\Documents and Settings\{username}\Start Menu\InfoShield4.lnk (Rogue.InfoShield4) -> Quarantined and deleted successfully.
C:\Documents and Settings\{username}\Start Menu\Programs\InfoShield4\InfoShield4 Á¦°Å.lnk (Rogue.InfoShield4) -> Quarantined and deleted successfully.
C:\Documents and Settings\{username}\Start Menu\Programs\InfoShield4\InfoShield4.lnk (Rogue.InfoShield4) -> Quarantined and deleted successfully.

(end)

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.