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Removal instructions for Zentom System Guard


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#1 Metallica

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Posted 23 July 2011 - 04:36 AM

What is Zentom System Guard?

The Malwarebytes research team has determined that Zentom System Guard 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 Zentom System Guard?

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 Zentom System Guard get on my computer?

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

How do I remove Zentom System Guard?

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 Zentom System Guard?

  • No, Malwarebytes' Anti-Malware removes Zentom System Guard 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 Zentom System Guard 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\D0CD96E4931BE5D9716F83B935298487\vcc70dep2r.exe

O4 - HKCU\..\Run: [vcc70dep2r.exe] "C:\Documents and Settings\{username}\Application Data\D0CD96E4931BE5D9716F83B935298487\vcc70dep2r.exe"
O4 - Startup: Zentom System Guard.lnk = C:\Documents and Settings\{username}\Application Data\D0CD96E4931BE5D9716F83B935298487\vcc70dep2r.exe


Note: the foldername is random

Alterations made by the installer:

  File System
  ===============
    Adds the folder C:\Documents and Settings\{username}\Application Data\D0CD96E4931BE5D9716F83B935298487
      Adds the file vcc70dep2r.exe"="10:49 23/07/11 1971200 bytes
      Adds the file lsrslt.ini"="10:52 23/07/11 6511 bytes
      Adds the file local.ini"="10:50 23/07/11 26602 bytes
      Adds the file hookdll.dll"="10:50 23/07/11 16896 bytes
      Adds the file enemies-names.txt"="10:50 23/07/11 28842 bytes
    In the existing folder C:\Documents and Settings\{username}\Application Data\Microsoft\Internet Explorer\Quick Launch
      Adds the file Zentom System Guard.lnk"="10:51 23/07/11 1166 bytes
    In the existing folder C:\Documents and Settings\{username}\Desktop
      Adds the file Zentom System Guard.lnk"="10:51 23/07/11 1188 bytes
    In the existing folder C:\Documents and Settings\{username}\Start Menu
      Adds the file Zentom System Guard.lnk"="10:51 23/07/11 1188 bytes
    Adds the folder C:\Documents and Settings\{username}\Start Menu\Programs\Zentom System Guard
      Adds the file Zentom System Guard.lnk"="10:51 23/07/11 1200 bytes
      Adds the file Uninstall.lnk"="10:51 23/07/11 2212 bytes
    In the existing folder C:\Documents and Settings\{username}\Start Menu\Programs\Startup
      Adds the file Zentom System Guard.lnk"="10:51 23/07/11 1200 bytes

  Registry
  ===============
    [HKEY_CURRENT_USER\Software\ZentomSystemGuard\Zentom System Guard]
      "nsaftscanunp"="'1'"
      "nsa"="'1'"
      "nsaftscann"="'1'"
      "affid"="'7070010200'"
      "coid"="'MTE5NDA4NzI5NzY2MTY3ODMyQ4tjRA'"
      "inst"="'ok'"
      "virus_signatures"="'61452'"
      "database_version"="'246'"
      "install_time"="'7/23/2011 10:49:58 AM'"
      "url_update_time"="'7/23/2011 10:49:58 AM'"
      "datarlA"=""
      "datarl2"="'KRoAGVdOQwQJHBA2QQoa'"
      "datarl1"="'KRoAGVdOQxYSFwE3ChFaBhw='"
    [HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\Zentom System Guard]
      "NoRepair"="1"
      "NoModify"="1"
      "InstallLocation"="'C:\Documents and Settings\{username}\Application Data\D0CD96E4931BE5D9716F83B935298487\'"
      "UninstallString"="'C:\Documents and Settings\{username}\Application Data\D0CD96E4931BE5D9716F83B935298487\vcc70dep2r.exe /uninstall'"
      "DisplayName"="'Zentom System Guard'"
      "DisplayIcon"="'C:\Documents and Settings\{username}\Application Data\D0CD96E4931BE5D9716F83B935298487\vcc70dep2r.exe,0'"
    [HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run]
      "vcc70dep2r.exe"="'"C:\Documents and Settings\{username}\Application Data\D0CD96E4931BE5D9716F83B935298487\vcc70dep2r.exe"'"


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

Database version: 7248

Windows 5.1.2600 Service Pack 3
Internet Explorer 8.0.6001.18702

7/23/2011 10:59:35 AM
mbam-log-2011-07-23 (10-59-35).txt

Scan type: Quick scan
Objects scanned: 137169
Time elapsed: 2 minute(s), 27 second(s)

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

Memory Processes Infected:
c:\documents and settings\{username}\application data\d0cd96e4931be5d9716f83b935298487\vcc70dep2r.exe (Trojan.FakeAlert) -> 680 -> Unloaded process successfully.

Memory Modules Infected:
(No malicious items detected)

Registry Keys Infected:
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Zentom System Guard (Trojan.FakeAlert) -> Quarantined and deleted successfully.
HKEY_CURRENT_USER\SOFTWARE\ZentomSystemGuard (Rogue.ZentomSystemGuard) -> Quarantined and deleted successfully.

Registry Values Infected:
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\vcc70dep2r.exe (Trojan.FakeAlert) -> Value: vcc70dep2r.exe -> Quarantined and deleted successfully.

Folders Infected:
c:\documents and settings\{username}\start menu\Programs\zentom system guard (Rogue.ZentomSystemGuard) -> Quarantined and deleted successfully.

Files Infected:
c:\documents and settings\{username}\application data\d0cd96e4931be5d9716f83b935298487\vcc70dep2r.exe (Trojan.FakeAlert) -> Quarantined and deleted successfully.
c:\documents and settings\{username}\Desktop\utrsid70.exe (Trojan.FakeAlert) -> Quarantined and deleted successfully.
c:\documents and settings\{username}\start menu\Programs\Startup\zentom system guard.lnk (Rogue.ZentomSystemGuard) -> Quarantined and deleted successfully.
c:\documents and settings\{username}\Desktop\zentom system guard.lnk (Rogue.ZentomSystemGuard) -> Quarantined and deleted successfully.
c:\documents and settings\{username}\application data\microsoft\internet explorer\quick launch\zentom system guard.lnk (Rogue.ZentomSystemGuard) -> Quarantined and deleted successfully.
c:\documents and settings\{username}\start menu\Programs\zentom system guard\zentom system guard.lnk (Rogue.ZentomSystemGuard) -> Quarantined and deleted successfully.
c:\documents and settings\{username}\start menu\Programs\zentom system guard\uninstall.lnk (Rogue.ZentomSystemGuard) -> 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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