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fake downloader.ab


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#1 Sylver

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Posted 22 January 2009 - 06:06 PM

I'm posting from my desktop which is fine, however my wife's laptop seems to have been infected.

She informed me the other day that it was acting funny, some internet pages weren't loading and her virus scanner (TrendMicro) would not update, and that she ran the scanner, and every time it found the same viruses.

I checked into it and she was getting a popup saying that her firewall was disabled, and another message saying she was infected with win32.zafi.b and to "click here" to remove which resulted in a website loading for a fake antivirus. I wish I wrote all this stuff down at the time.

I tried booting into safe mode and running the TrendMicro antivirus and it found nothing. I tried installing MBAM however it will not install in safe mode. I also tried installing mbam on my desktop and copying it onto the laptop, and it still would not run. I then downloaded the Stinger app from McAfee and it indicated it found a virus called Fake Downloader.AB and had deleted it. After that I still could not run the mbam in safe mode. I rebooted into normal mode, and the desktop image would not load, the icons do not all load properly, and the mouse icon turns into an hour glass when positioned over the taskbar and you cannot click anything or do any keyboard commands.

Sorry I didn't capture or record better information at the time.

Edit: added that it was win32.zafi.b that the popup was claiming the computer had.
Also got MBAM to install in safe mode but have not run it, trying not to get further ahead of myself before getting any help.

Edited by Sylver, 22 January 2009 - 06:32 PM.


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#2 Budapest

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Posted 22 January 2009 - 07:43 PM

Try running a Quick Scan with Malwarebytes in Normal Mode.
The power of accurate observation is commonly called cynicism by those who haven't got it.

—George Bernard Shaw

#3 Sylver

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Posted 22 January 2009 - 08:39 PM

I got it to run in safe mode, haven't had success last few tries doing anything in normal mode. Here's the log, i did not fix anything yet.

Malwarebytes' Anti-Malware 1.33
Database version: 1654
Windows 5.1.2600 Service Pack 2

1/22/2009 7:37:39 PM
mbam-log-2009-01-22 (19-37-26).txt

Scan type: Quick Scan
Objects scanned: 54483
Time elapsed: 8 minute(s), 58 second(s)

Memory Processes Infected: 0
Memory Modules Infected: 0
Registry Keys Infected: 3
Registry Values Infected: 1
Registry Data Items Infected: 2
Folders Infected: 0
Files Infected: 1

Memory Processes Infected:
(No malicious items detected)

Memory Modules Infected:
(No malicious items detected)

Registry Keys Infected:
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Internet Explorer\SearchScopes\{daed9266-8c28-4c1c-8b58-5c66eff1d302} (Search.Hijack) -> No action taken.
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Internet Explorer\SearchScopes\{0b385ee3-ee18-4c69-bf55-6b6b406ef591} (Trojan.Zlob) -> No action taken.
HKEY_LOCAL_MACHINE\SOFTWARE\tdss (Trojan.Agent) -> No action taken.

Registry Values Infected:
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Internet Explorer\URLSearchHooks\{4d25f926-b9fe-4682-bf72-8ab8210d6d75} (Adware.MyWebSearch) -> No action taken.

Registry Data Items Infected:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit (Trojan.Agent) -> Data: c:\windows\system32\ -> No action taken.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit (Trojan.Agent) -> Data: system32\ -> No action taken.

#4 Budapest

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Posted 22 January 2009 - 08:41 PM

Let Malwarebytes fix what it has found, reboot into Normal Mode and try to run a Quick Scan there.
The power of accurate observation is commonly called cynicism by those who haven't got it.

—George Bernard Shaw

#5 Sylver

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Posted 22 January 2009 - 09:16 PM

fixed the selected items.

Booted into normal mode.

Trendmicro updated.

Tried to run MBAM would not load.

Rebooted.

Stalled at welcome screen.

Rebooted into safe mode.

Would not run MBAM.

:thumbsup:

#6 Budapest

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Posted 22 January 2009 - 09:18 PM

Before we start fixing anything you should print out these instructions or copy them to a NotePad file so they will be accessible. Some steps will require you to disconnect from the Internet or use Safe Mode and you will not have access to this page.

Please download DrWeb-CureIt and save it to your desktop. DO NOT perform a scan yet.

Reboot your computer in "Safe Mode" using the F8 method. To do this, restart your computer and after hearing your computer beep once during startup (but before the Windows icon appears) press the F8 key repeatedly. A menu will appear with several options. Use the arrow keys to navigate and select the option to run Windows in "Safe Mode".

Scan with Dr.Web CureIt as follows:
  • Double-click on drweb-cureit.exe to open the program and click Start. (There is no need to update if you just downloaded the most current version
  • Read the Virus check by DrWeb scanner prompt and click Ok where asked to Start scan now? Allow the setup.exe to load if asked by any of your security programs.
  • The Express scan will automatically begin.
    (This is a short scan of files currently running in memory, boot sectors, and targeted folders).
  • If prompted to dowload the Full version Free Trial, ignore and click the X to close the window.
  • If an infected object is found, you will be prompted to move anything that cannot be cured. Click Yes to All.
  • When complete, click Select All, then choose Cure > Move incurable.
    (This will move any detected files to the C:\Documents and Settings\userprofile\DoctorWeb\Quarantine folder if they can't be cured)
  • Now put a check next to Complete scan to scan all local disks and removable media.
  • In the top menu, click Settings > Change settings, and UNcheck "Heuristic analysis" under the "Scanning" tab, then click Ok.
  • Back at the main window, click the green arrow "Start Scanning" button on the right under the Dr.Web logo.
  • When the scan is complete, a message will be displayed at the bottom indicating if any viruses were found.
  • Click "Yes to all" if asked to cure or move the file(s) and select "Move incurable".
  • In the top menu, click file and choose save report list.
  • Save the DrWeb.csv report to your desktop.
  • Exit Dr.Web Cureit when done.
  • Important! Reboot your computer because it could be possible that files in use will be moved/deleted during reboot.
  • After reboot, post the contents of the log from Dr.Web in your next reply. (You can use Notepad to open the DrWeb.cvs report)

The power of accurate observation is commonly called cynicism by those who haven't got it.

—George Bernard Shaw

#7 Sylver

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Posted 23 January 2009 - 08:09 AM

upd.exe;C:\Program Files\Trend Micro\Internet Security\Quarantine;Trojan.DownLoader.59802;Deleted.;


I rebooted into normal mode... can access internet, security sites still blocked, mbam loads into memory but doesn't run.

I'll be back home tonight.

#8 Budapest

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Posted 23 January 2009 - 03:37 PM

Try renaming this file C:\Program Files\Malwarebytes' Anti-Malware\mbam.exe to something else such as abcde.bat. Then double-click the renamed file and see if it will run.
The power of accurate observation is commonly called cynicism by those who haven't got it.

—George Bernard Shaw

#9 Sylver

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Posted 23 January 2009 - 09:08 PM

Before I shut the computer down this morning I ran a scan with DrWeb and it found and deleted: backdoor.tdss.29 I had to shut it down and go to work.

Tonight I booted up into normal mode and was able to run MBAM without changing the file name and got this log...

Malwarebytes' Anti-Malware 1.33
Database version: 1654
Windows 5.1.2600 Service Pack 2

1/23/2009 7:51:03 PM
mbam-log-2009-01-23 (19-51-03).txt

Scan type: Quick Scan
Objects scanned: 56445
Time elapsed: 7 minute(s), 32 second(s)

Memory Processes Infected: 0
Memory Modules Infected: 0
Registry Keys Infected: 4
Registry Values Infected: 0
Registry Data Items Infected: 0
Folders Infected: 0
Files Infected: 13

Memory Processes Infected:
(No malicious items detected)

Memory Modules Infected:
(No malicious items detected)

Registry Keys Infected:
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Internet Explorer\SearchScopes\{daed9266-8c28-4c1c-8b58-5c66eff1d302} (Search.Hijack) -> Quarantined and deleted successfully.
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Internet Explorer\SearchScopes\{0b385ee3-ee18-4c69-bf55-6b6b406ef591} (Trojan.Zlob) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\tdssdata (Trojan.Agent) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\tdss (Trojan.Agent) -> Quarantined and deleted successfully.

Registry Values Infected:
(No malicious items detected)

Registry Data Items Infected:
(No malicious items detected)

Folders Infected:
(No malicious items detected)

Files Infected:
C:\WINDOWS\system32\TDSScfum.dll (Trojan.TDSS) -> Quarantined and deleted successfully.
C:\WINDOWS\system32\TDSSnrsr.dll (Trojan.TDSS) -> Quarantined and deleted successfully.
C:\WINDOWS\system32\TDSSofxh.dll (Trojan.TDSS) -> Quarantined and deleted successfully.
C:\WINDOWS\system32\TDSSriqp.dll (Trojan.TDSS) -> Quarantined and deleted successfully.
C:\WINDOWS\Temp\TDSS6378.tmp (Trojan.TDSS) -> Quarantined and deleted successfully.
C:\WINDOWS\Temp\TDSS65f8.tmp (Trojan.TDSS) -> Quarantined and deleted successfully.
C:\WINDOWS\Temp\TDSS69e0.tmp (Trojan.TDSS) -> Quarantined and deleted successfully.
C:\WINDOWS\Temp\TDSS6e16.tmp (Trojan.TDSS) -> Quarantined and deleted successfully.
C:\WINDOWS\system32\TDSSlxwp.dll (Trojan.Agent) -> Quarantined and deleted successfully.
C:\WINDOWS\Temp\TDSS535b.tmp (Trojan.Agent) -> Quarantined and deleted successfully.
C:\WINDOWS\Temp\TDSS5500.tmp (Trojan.Agent) -> Quarantined and deleted successfully.
C:\Documents and Settings\J...\Local Settings\Temp\TDSSf6f8.tmp (Trojan.FakeAlert) -> Quarantined and deleted successfully.
C:\WINDOWS\system32\TDSStkdv.log (Trojan.TDSS) -> Quarantined and deleted successfully.


I rebooted and reran MBAM and it was clear:

Malwarebytes' Anti-Malware 1.33
Database version: 1654
Windows 5.1.2600 Service Pack 2

1/23/2009 8:01:30 PM
mbam-log-2009-01-23 (20-01-30).txt

Scan type: Quick Scan
Objects scanned: 56411
Time elapsed: 5 minute(s), 50 second(s)

Memory Processes Infected: 0
Memory Modules Infected: 0
Registry Keys Infected: 0
Registry Values Infected: 0
Registry Data Items Infected: 0
Folders Infected: 0
Files Infected: 0

Memory Processes Infected:
(No malicious items detected)

Memory Modules Infected:
(No malicious items detected)

Registry Keys Infected:
(No malicious items detected)

Registry Values Infected:
(No malicious items detected)

Registry Data Items Infected:
(No malicious items detected)

Folders Infected:
(No malicious items detected)

Files Infected:
(No malicious items detected)


Edit: Edited a folder name for privacy

Edited by Sylver, 23 January 2009 - 09:09 PM.


#10 Budapest

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Posted 23 January 2009 - 10:14 PM

Some of those backdoor infections can be quite nasty - your online passwords may have been compromised.

If you’re clean, you should create a new Restore Point to prevent possible re-infection from an old one.

Go Start > Programs > Accessories > System Tools and click System Restore. Choose the radio button marked Create a Restore Point on the first screen then click Next. Give the Restore Point a name and then click Create. Then use Disk Cleanup to remove all but the most recently created Restore Point. Go Start > Run and type: "Cleanmgr" (without the quotes). Click Ok > More Options tab > Clean Up in the System Restore section to remove all previous restore points except the newly created one.

Also, go Start > Control Panel and double-click Add or Remove Programs. Post back and report any Java entries that you have.
The power of accurate observation is commonly called cynicism by those who haven't got it.

—George Bernard Shaw

#11 Sylver

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Posted 23 January 2009 - 11:45 PM

J2SE Runtime Enviornment 5.0 Update 2
J2SE Runtime Enviornment 5.0 Update 6
Java 2 Runtime Enviornment, SE v1.4.2_03
Java™ 6 Update 11
Java™ 6 Update 7
Java™ SE Runtime Enviornment 6 Update 1

#12 Budapest

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Posted 24 January 2009 - 01:04 AM

Keep this one: Java™ 6 Update 11

Uninstall all the rest as they are out of date.
The power of accurate observation is commonly called cynicism by those who haven't got it.

—George Bernard Shaw




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