New autorun.inf worm / virus? Have text file, please help decipher.

Viruses and worms
1

Hello All,

OS: XP Pro SP2

I found “autorun.inf” on my USD thumb drive. It appears to be different than other “autorun” viriuses / worms that I’ve researched.

I was not able to delete “autorun.inf”; it said “Cannot delete autorun: It is being used by another person or program. Close any programs that might be using the file and try again.”

I was not able to re-format the USB thumb drive; it said “Windows cannot format this drive. Quit any disk utilities or other programs that are using this drive, and make sure that no window is displaying the contents of the drive. Then try formatting again.”

I rebooted my machine into Ubuntu (I have dual operating systems, but I rarely use Ubuntu).

Plugged in USB drive.

Pop up message: “This medium contains software intended to be automatically started. Would you like to run it?” Of course I hit cancel.

I opened autorun.inf with the text editor. This is the contents:

[aUtoRun[

:0

[aUtoRUn

;jam3

OpEN=filesystem/pagefile.exe

:xm3d

ACtioN=Open

SHELL\\oPen\\\CoMMAnd=filesystem/pagefile.exe

SHEll\\eXpLorE\\cOMMand=filesystem/pagefile.exe

UseAUToPLAy=11m0yE5cY803Y803X4Mx+'I,0Q2ZUmXyM83tx9ceTA09H8W4u890e5

Using Ubunto I deleted autorun.inf without issue. It reappears when I plug the USB in when using XP Pro. It is somewhere on my HDD.

Avast boot time scan did not find anything.

Spybot did not find anything.

QUESTIONS:

The only “pagefile.exe” type file I could find was “PAGEFILE.EXE-1D5c4CC2.pf” in C:\WINDOWS\Prefetch. I do not know enough about OS’s to know if I should delete this file.

I do not know what “UseAUToPLAy=11m0yE5cY803Y803X4Mx+'I,0Q2ZUmXyM83tx9ceTA09H8W4u890e5” does.

Can someone help decipher the text file?

Where is the virus hiding on my HDD?

Thanks.

2

Hi mb300,

Proposed cleansing translated from Spanish and adopted from “Ayuda con virus en pen-drive”.
Re: http://www.forospyware.com/t291208.html
in 4 steps, and the 4th step adopted according scanning instructions at BleepingComputer (pol)

Step 1
Download and update the following tools:

CCleaner - Manual. http://www.ccleaner.com/download
Malwarebytes 'Anti-Malware - Manual. http://www.malwarebytes.org/mbam-download.php
Flash_Disinfector (See at the end of this post)
http://www.myantispyware.com/2009/01/08/flash-disinfector-free-autoruninf-trojans-removal-tool/

Step 2 °
Restart into SafeMode (If this is impossible, go to next step).

Step 3 °

Run Ccleaner like explained in the Manual
Run Flash-desinfector ↔ then connect the flash drive onto your pc and run again. [/ List]

Note : Flash_Disinfector will create a hidden folder with the name “autorun.inf” for every partition and every USB-station that has been inserted at that very moment. Remove this folder … it will help to protect your USB-peripherals against a future infestation.

Restart in Normal Mode.

Step 4 °
Please download Dr.Web CureIt and save it to your desktop. DO NOT perform a scan yet.
alternate download link
http://majorgeeks.com/downloadget.php?id=4783&file=1&evp=ef9669e4f16e6e75d95abcde8f88163d

Note: The file will be randomly named (i.e. 5mkuvc4z.exe).

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: (with memory connected to the USB-port)
Double-click on the randomly named file 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. (This will move any detected files to the C:\Documents and Settings\userprofile\DoctorWeb\Quarantine folder if they can’t be cured)
After the Express Scan is finished, 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 Apply, Ok.
Back at the main window, click the green arrow “Start Scanning” button on the right under the Dr.Web logo.
Please be patient as this scan could take a long time to complete.
When the scan has finished, a message will be displayed at the bottom indicating if any viruses were found.
Click Select All, then choose Cure > 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 attached to your next reply. (You can use Notepad to open the DrWeb.cvs report)

polonus (malware fighter)