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Removal instructions for UserVaccine

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Metallica

Metallica

    Spyware Veteran

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Content is republished with permission from Malwarebytes.

What is UserVaccine?

The Malwarebytes research team has determined that UserVaccine 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 UserVaccine?

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

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You will find this icon in your taskbar, flashing red and yellow:

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And see these warnings:

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How did UserVaccine get on my computer?

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

How do I remove UserVaccine?

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 UserVaccine?

  • No, Malwarebytes' Anti-Malware removes UserVaccine 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 UserVaccine 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:
Running processes:

C:\Program Files\uservaccine\uservaccine.exe

Alterations made by the installer:
  File System
  ===============
    Adds the folder C:\Program Files\uservaccine
      Adds the file uservaccineu.exe"="09:48 04/12/10 105064 bytes
      Adds the file uservaccinedata"="10:01 04/12/10 18432 bytes
      Adds the file uservaccined.dll"="09:59 04/12/10 693778 bytes
      Adds the file uservaccinebk.exe"="10:01 04/12/10 227432 bytes
      Adds the file uservaccine.exe"="09:52 04/12/10 595792 bytes
    In the existing folder C:\WINDOWS\system32
      Adds the file uninst_uservaccine.exe"="10:00 04/12/10 167264 bytes


  Registry
  ===============
    [HKEY_LOCAL_MACHINE\SOFTWARE\uservaccine]
      "inspectDay"="'2010-12-04'"
      "updateDay"="'2010-11-30'"
      "today"="'2010-12-04'"
      "ver6"="'20100303'"
      "ver5"="'20100303'"
      "ver4"="'20100831'"
      "ver3"="'20100373'"
      "ver2"="'20100827'"
      "ver1"="'20100827'"
      "uservaccine_nic"="'08:00:27:5F:34:F5'"
      "installmode"="'2'"
      "code1"="'uservaccine'"
    [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\uservaccine]
      "NoRepair"="1"
      "NoModify"="1"
      "DisplayIcon"="'C:\WINDOWS\system32\uninst_uservaccine.exe'"
      "UninstallString"="'C:\WINDOWS\system32\uninst_uservaccine.exe'"
      "URLInfoAbout"="'http://www.uservaccine.co.kr'"
      "HelpLink"="'http://www.uservaccine.co.kr'"
      "DisplayVersion"="'1.2'"
      "DisplayName"="'uservaccine'"
    [HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer]
      "uservaccine_uservaccine"="'1'
    [HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\International]
      "W2KLpk"="1


Malwarebytes' Anti-Malware log:
Malwarebytes' Anti-Malware 1.50
www.malwarebytes.org

Database version: 5242

Windows 5.1.2600 Service Pack 3
Internet Explorer 6.0.2900.5512

12/4/2010 12:18:14 PM
mbam-log-2010-12-04 (12-18-14).txt

Scan type: Quick scan
Objects scanned: 114641
Time elapsed: 2 minute(s), 9 second(s)

Memory Processes Infected: 1
Memory Modules Infected: 0
Registry Keys Infected: 1
Registry Values Infected: 1
Folders Infected: 1
Files Infected: 11

Memory Processes Infected:
c:\program files\uservaccine\uservaccine.exe (Rogue.UserVaccine) -> 728 -> Unloaded process successfully.

Memory Modules Infected:
(No malicious items detected)

Registry Keys Infected:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\uservaccine (Rogue.UserVaccine) -> Quarantined and deleted successfully.

Registry Values Infected:
HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\uservaccine_uservaccine (Rogue.UserVaccine) -> Value: uservaccine_uservaccine -> Quarantined and deleted successfully.

Folders Infected:
c:\program files\uservaccine (Rogue.UserVaccine) -> Quarantined and deleted successfully.

Files Infected:
c:\program files\uservaccine\uservaccine.exe (Rogue.UserVaccine) -> Quarantined and deleted successfully.
c:\documents and settings\{username}\Desktop\uservaccinesetup.exe (Rogue.UserVaccine) -> Quarantined and deleted successfully.
c:\WINDOWS\system32\uninst_uservaccine.exe (Rogue.UserVaccine) -> Quarantined and deleted successfully.
c:\documents and settings\{username}\local settings\temporary internet files\Content.IE5\ISF6HJK1\uservaccine[1].exe (Rogue.UserVaccine) -> Quarantined and deleted successfully.
c:\documents and settings\{username}\local settings\temporary internet files\Content.IE5\OAPPQD53\uservaccinebk[1].exe (Rogue.UserVaccine) -> Quarantined and deleted successfully.
c:\documents and settings\{username}\local settings\temporary internet files\Content.IE5\OAPPQD53\uservaccineu[1].exe (Rogue.UserVaccine) -> Quarantined and deleted successfully.
c:\documents and settings\{username}\local settings\temporary internet files\Content.IE5\VAD23EEL\uninst_uservaccine[1].exe (Rogue.UserVaccine) -> Quarantined and deleted successfully.
c:\program files\uservaccine\uservaccinebk.exe (Rogue.UserVaccine) -> Quarantined and deleted successfully.
c:\program files\uservaccine\uservaccined.dll (Rogue.UserVaccine) -> Quarantined and deleted successfully.
c:\program files\uservaccine\uservaccinedata (Rogue.UserVaccine) -> Quarantined and deleted successfully.
c:\program files\uservaccine\uservaccineu.exe (Rogue.UserVaccine) -> 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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