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Help get rid of trojan!


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9 replies to this topic

#1 nefarious_saint

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Posted 17 February 2009 - 10:20 PM

I was downloading movies off AXXO when i caught a trojan last night.

I cleaned up my PC with A-Squared. It keeps on replicating, and i had to delete 2 times already.
Still coming back. The log file says its "trojan-downloader.win32.renos.AY!IK"

It basically pops up a windows explorer saying im infected and should use a program to scan my computer.

My CA anti-virus doesnt seem to catch it. But A-squared got it 2 times. Now the trojan keeps coming back, and A-squared seems to be missing it.

please help me.
thanks

(edit) I ran windows defender. IT found it, but cant delete it. saying that "not in the correct state to be removed"
help.

Edited by nefarious_saint, 17 February 2009 - 10:33 PM.


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#2 boopme

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Posted 18 February 2009 - 09:30 PM

Hello and welcome!. Let's see what MBAM says. I am moving this topic from Vista to the AM I Infected forum for scans.

Please download Malwarebytes Anti-Malware (v1.32) and save it to your desktop.
alternate download link 1
alternate download link 2
If you have a previous version of MBAM, remove it via Add/Remove Programs and download a fresh copy.
  • Make sure you are connected to the Internet.
  • Double-click on mbam-setup.exe to install the application.
  • When the installation begins, follow the prompts and do not make any changes to default settings.
  • When installation has finished, make sure you leave both of these checked:
    • Update Malwarebytes' Anti-Malware
    • Launch Malwarebytes' Anti-Malware
  • Then click Finish.
MBAM will automatically start and you will be asked to update the program before performing a scan.
  • If an update is found, the program will automatically update itself.
  • Press the OK button to close that box and continue.
  • If you encounter any problems while downloading the updates, manually download them from here and just double-click on mbam-rules.exe to install. Alternatively, you can update through MBAM's interface from a clean computer, copy the definitions (rules.ref) located in C:\Documents and Settings\All Users\Application Data\Malwarebytes\Malwarebytes' Anti-Malware from that system to a usb stick or CD and then copy it to the infected machine.
On the Scanner tab:
  • Make sure the "Perform Quick Scan" option is selected.
  • Then click on the Scan button.
  • If asked to select the drives to scan, leave all the drives selected and click on the Start Scan button.
  • The scan will begin and "Scan in progress" will show at the top. It may take some time to complete so please be patient.
  • When the scan is finished, a message box will say "The scan completed successfully. Click 'Show Results' to display all objects found".
  • Click OK to close the message box and continue with the removal process.
Back at the main Scanner screen:
  • Click on the Show Results button to see a list of any malware that was found.
  • Make sure that everything is checked, and click Remove Selected.
  • When removal is completed, a log report will open in Notepad.
  • The log is automatically saved and can be viewed by clicking the Logs tab in MBAM.
  • Copy and paste the contents of that report in your next reply and exit MBAM.
Note: If MBAM encounters a file that is difficult to remove, you may be asked to reboot your computer so it can proceed with the disinfection process. Regardless if prompted to restart the computer or not, please do so immediately. Failure to reboot normally (not into safe mode) will prevent MBAM from removing all the malware. MBAM may "make changes to your registry" as part of its disinfection routine. If using other security programs that detect registry changes (ie Spybot's Teatimer), they may interfere or alert you after scanning with MBAM. Please temporarily disable such programs or permit them to allow the changes.
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#3 nefarious_saint

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Posted 18 February 2009 - 11:43 PM

Thank you so much for your help.
I have deleted the Trojan.
However, every time i turn on my PC, it automatically comes back again. Its driving me crazy.
I followed all of your instructions, here is the log file.

Malwarebytes' Anti-Malware 1.34
Database version: 1778
Windows 6.0.6001 Service Pack 1

2/18/2009 20:34:55
mbam-log-2009-02-18 (20-34-55).txt

Scan type: Quick Scan
Objects scanned: 73449
Time elapsed: 7 minute(s), 54 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: 1

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:
C:\Users\Alexy\AppData\Local\Temp\systeminit.exe (Trojan.FakeAlert) -> Quarantined and deleted successfully.



Again, Thank you so much for your help.
I really appreciate it.

#4 boopme

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Posted 19 February 2009 - 04:22 PM

Hi, let's run these and see what improvement we get.

From your regular user account..

Download Attribune's ATF Cleaner and then SUPERAntiSpyware , Free Home Version. Save both to desktop ..
DO NOT run yet.
Open SUPER from icon and install and Update it
Under Scanner Options make sure the following are checked (leave all others unchecked):
Close browsers before scanning.
Scan for tracking cookies.
Terminate memory threats before quarantining
.
Click the "Close" button to leave the control center screen and exit the program. DO NOT run yet.

Now reboot into Safe Mode: How to enter safe mode(XP)
Using the F8 Method
Restart your computer.
When the machine first starts again it will generally list some equipment that is installed in your machine, amount of memory, hard drives installed etc. At this point you should gently tap the F8 key repeatedly until you are presented with a Windows XP Advanced Options menu.
Select the option for Safe Mode using the arrow keys.
Then press enter on your keyboard to boot into Safe Mode
.

Double-click ATF-Cleaner.exe to run the program.
Under Main "Select Files to Delete" choose: Select All.
Click the Empty Selected button.

If you use Firefox or Opera browser click that browser at the top and choose: Select All
Click the Empty Selected button.
If you would like to keep your saved passwords, please click No at the prompt.
Click Exit on the Main menu to close the program
.

NOW Scan with SUPER
Open from the desktop icon or the program Files list
On the left, make sure you check C:\Fixed Drive.
Perform a Complete scan. After scan,Verify they are all checked.
Click OK on the summary screen to quarantine all found items.
If asked if you want to reboot, click "Yes" and reboot normally.

To retrieve the removal information after reboot, launch SUPERAntispyware again.
Click Preferences, then click the Statistics/Logs tab.
Under Scanner Logs, double-click SUPERAntiSpyware Scan Log.
If there are several logs, click the current dated log and press View log.
A text file will open in your default text editor.
Please copy and paste the Scan Log results in your next reply.
Click Close to exit the program.
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#5 Starbuck

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Posted 19 February 2009 - 04:46 PM

Because this infection attempts to spread via removable storage drives and copies itself as exe files with various names, i suggest:

Please download Flash_Disinfector.exe by sUBs and save it to your desktop.
  • Double-click Flash_Disinfector.exe to run it and follow any prompts that may appear.
  • The utility may ask you to insert your flash drive and/or other removable drives. Please do so and allow the utility to clean up those drives as well.
  • Hold down the Shift key when inserting the drive until Windows detects it to keep autorun.inf from executing if it is present.
  • Wait until it has finished scanning and then exit the program.
  • Reboot your computer when done.
Note: As part of its routine, Flash_Disinfector will create a hidden folder named autorun.inf in each partition and every USB drive that was plugged in when you ran it. Do not delete this folder...it will help protect your drives from future infection by keeping the autorun file from being installed on the root drive and running other malicious files.

This should protect your removable drives.

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#6 nefarious_saint

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Posted 22 February 2009 - 06:13 AM

Hep Boopme,

I didnt have to run ATF cleaner or superantispyware because the trojan is gone, and i have no more computer problems.

I just wanted to thank you for all your help.

You are awesome.

However, i did notice my Hard drive memory is slowly disappearing. For a few months now i have noticed that my C: drive is losing space...and i have not downloaded anything or installed anything.
Could you tell me why you think that is? One day it said i have 20 gigs of space left, and the next day it said i have 15gigs left. It does not fluctuate back and forth. When i lose hard drive space, it does not come back.

I would really appreciate any advice concerning this new matter.
Thank you

#7 nefarious_saint

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Posted 22 February 2009 - 08:46 AM

UPDATE!

just in case, i ran MBAM one more time after i posted the last reply, and it found the trojan again. So after that, i followed all your directions about running the ATF cleaner and the superantispyware.

First i will post the log of the second MBAM scan, following a log of the SuperAntiSpyware.

Thanks for your help.

MBAM:
Malwarebytes' Anti-Malware 1.34
Database version: 1778
Windows 6.0.6001 Service Pack 1

2/22/2009 3:20:18 AM
mbam-log-2009-02-22 (03-20-18).txt

Scan type: Quick Scan
Objects scanned: 62272
Time elapsed: 4 minute(s), 58 second(s)

Memory Processes Infected: 0
Memory Modules Infected: 0
Registry Keys Infected: 1
Registry Values Infected: 2
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:
HKEY_CURRENT_USER\SOFTWARE\Cognac (Rogue.Multiple) -> Quarantined and deleted successfully.

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

Registry Data Items Infected:
(No malicious items detected)

Folders Infected:
(No malicious items detected)

Files Infected:
(No malicious items detected)


SuperAntiSpyware:

Its really weird... i tried to view the scanner log, but it wont open. UGH! so frustrating.

#8 boopme

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Posted 22 February 2009 - 03:05 PM

Hi sometimes with SAS you need to look under your other account or shut down and restart.
Pc is running good now tho?

As MBAM is upto database 1790 or so now run it once more
Rerun MBAM

Open MBAM in normal mode and click Update tab, select Check for Updates,when done
click Scanner tab,select Quick scan and scan.
After scan click Remove Selected, Post new scan log and Reboot into normal mode.
How do I get help? Who is helping me?For the time will come when men will not put up with sound doctrine. Instead, to suit their own desires, they will gather around them a great number of teachers to say what their itching ears want to hear....Become a BleepingComputer fan: Facebook

#9 nefarious_saint

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Posted 22 February 2009 - 08:07 PM

Hi,

SAS still does not let me open a scan log.
I dont really care, because the PC is now running really well.

Thank you for your informative help.

The only weird thing I am experiencing is that my hard drive memory is slowly vanishing. I have not downloaded anything. And every day i check my C drive, and the memory available keeps disappearing.

Anyways, thanks for making my life easier, i was losing sleep over this Trojan.

I updated MBAM like you said, however, it is still at 1778.

Here is the latest log:

Malwarebytes' Anti-Malware 1.34
Database version: 1778
Windows 6.0.6001 Service Pack 1

2/22/2009 5:02:37 PM
mbam-log-2009-02-22 (17-02-37).txt

Scan type: Quick Scan
Objects scanned: 61890
Time elapsed: 4 minute(s), 12 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)

Edited by nefarious_saint, 22 February 2009 - 08:08 PM.


#10 boopme

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Posted 22 February 2009 - 11:11 PM

Hi well thre is still something hiding as it is eating the memory and prohibiting updates . But at least you are running better and now should post to HJT. They are busy and may need a day or two to respond,but they will. We have you in good shape so let them get that last item.
We need to run HJT.
Please follow this guide. go and do steps 6 and 7 ,, Preparation Guide For Use Before Using Hijackthis. Then go here HijackThis Logs and Virus/Trojan/Spyware/Malware Removal ,click New Topic,give it a relevant Title and post that complete log.

Let me know if you were successful in posting.
How do I get help? Who is helping me?For the time will come when men will not put up with sound doctrine. Instead, to suit their own desires, they will gather around them a great number of teachers to say what their itching ears want to hear....Become a BleepingComputer fan: Facebook




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