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Reason to believe virus is in Malwarebytes


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The past few weeks my computer has been acting wierd, going slow, crashing, etc.

I decided to install Malwarebytes to scan the computer, and found 6 Objects Infected.

The weird thing is though, that the 6 objects where normal.

Here is my log:

Malwarebytes' Anti-Malware 1.51.1.1800

www.malwarebytes.org

Database version: 7615

Windows 6.1.7601 Service Pack 1

Internet Explorer 9.0.8112.16421

8/30/2011 5:44:26 PM

mbam-log-2011-08-30 (17-44-23).txt

Scan type: Quick scan

Objects scanned: 199048

Time elapsed: 2 minute(s), 3 second(s)

Memory Processes Infected: 0

Memory Modules Infected: 0

Registry Keys Infected: 0

Registry Values Infected: 4

Registry Data Items Infected: 0

Folders Infected: 0

Files Infected: 2

Memory Processes Infected:

(No malicious items detected)

Memory Modules Infected:

(No malicious items detected)

Registry Keys Infected:

(No malicious items detected)

Registry Values Infected:

HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\Policies (Backdoor.HMCPol.Gen) -> Value: Policies -> No action taken.

HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HKCU (Backdoor.HMCPol.Gen) -> Value: HKCU -> No action taken.

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\Policies (Backdoor.HMCPol.Gen) -> Value: Policies -> No action taken.

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HKLM (Backdoor.HMCPol.Gen) -> Value: HKLM -> No action taken.

Registry Data Items Infected:

(No malicious items detected)

Folders Infected:

(No malicious items detected)

Files Infected:

c:\Users\David\AppData\Roaming\winlogon.exe (Trojan.Downloader) -> No action taken.

c:\Users\David\AppData\Roaming\logs.dat (Bifrose.Trace) -> No action taken.

----------------

One of them, the process winlogon.exe, I removed in the Windows Task Manager processes tab, and it crashed my client (which it should if you delete it), so that means it is not a virus.

Then that must mean that Malwarebytes is giving me false information. I tried deleting the Malwarebytes file in 'Program Files (x86)' and these files wouldn't delete:

mbam.dll

mbam.exe

mbamcore.dll

mbamnet.dll

ssubtmr6.dll

vbalsgrid6.ocx

-------------

My computer OS is Windows 7 64-Bit.

Hope I can get this solved!

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  • Staff

Hi and welcome to Malwarebytes.

I'm afraid I have bad news.

Your logs reveal a backdoor trojan. A backdoor severely compromises system integrity.

A compromised system may allow illicit network connections, disabling of security software, modifying critical system files and collection and transmiission of personal identifiable information without your consent.

I recommend that you disconnect this PC from the Internet immediately, and only reconnect to download any tools that are required. If you do any banking or other financial transactions on the PC or it if it contains any other sensitive information, please get to a known clean computer and change all passwords where applicable, and it would be wise to contact those same financial institutions to apprise them of your situation.

Though the Trojan has been identified and can be killed, because of it's backdoor functionality, your PC is very likely compromised and there is no way to be sure your computer can ever again be trusted. Many experts in the security community believe that once infected with this type of Trojan, the best course of action would be a reformat and reinstall of the OS. If it were on my PC I would not hesitate for a moment to do so. Please read these for more information:

How Do I Handle Possible Identify Theft, Internet Fraud and CC Fraud?

When Should I Format, How Should I Reinstall

Should you decide not to follow that advice, we will of course do our best to clean the computer of any infections that we can see but, as I already stated, we can in no way guarantee it to be trustworthy.

Should you have any questions, please feel free to ask.

Let me know what you decide.

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  • 3 weeks later...
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  • Staff

Due to the lack of feedback this topic is closed to prevent others from posting here. If you need this topic reopened, please send a Private Message to any one of the moderating team members. Please include a link to this thread with your request. This applies only to the originator of this thread.

Other members who need assistance please start your own topic in a new thread. Thanks!

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