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backdoor.bot and worm.autorun


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#1 karenbc

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Posted 03 February 2011 - 04:33 PM

I'm helping my mother with her computer issues via remote access. Her browser was redirected apparently several weeks ago, but she thought it was something her ISP had done so no action was taken. In talking to her today, I suggested we run Malwarebytes just to check for any problems. MBAM found the following 2 items (both of which were quarantined and deleted successfully):
c:\WINDOWS\system.exe (Worm.AutoRun)
c:\WINDOWS\toolbar.exe (Backdoor.Bot)

Do you recommend further evaluation to determine if her computer is still at risk?

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#2 boopme

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Posted 03 February 2011 - 08:36 PM

Hello,yes please run an online scan.
Is this XP or another system?

One or more of the identified infections is a backdoor trojan.

This allows hackers to remotely control your computer, steal critical system information and download and execute files.

I would counsel you to disconnect this PC from the Internet immediately. If you do any banking or other financial transactions on the PC or if it should contain 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.



Please perform a scan with Eset Online Antiivirus Scanner.
This scan requires Internet Explorer,Opera or Firefox to work. Vista/Windows 7 users need to run Internet Explorer as Administrator.
To do this, right-click on the IE icon in the Start Menu or Quick Launch Bar on the Taskbar and select Run As Administrator from the context menu.
  • Click the green Posted Image button.
  • Read the End User License Agreement and check the box:
  • Check Posted Image.
  • Click the Posted Image button.
  • Accept any security warnings from your browser.
  • Check Posted Image
  • Check Remove found threats and Scan potentially unwanted applications. (If given the option, choose "Quarantine" instead of delete.)
  • Click the Start button.
  • ESET will then download updates for itself, install itself, and begin scanning your computer.
  • If offered the option to get information or buy software at any point, just close the window.
  • The scan will take a while so be patient and do NOT use the computer while the scan is running. Keep all other programs and windows closed.
  • When the scan completes, push Posted Image
  • Push Posted Image, and save the file to your desktop as ESETScan.txt.
  • Push the Posted Image button, then Finish.
  • Copy and paste the contents of ESETScan.txt in your next reply.
Note: A log.txt file will also be created and automatically saved in the C:\Program Files\EsetOnlineScanner\ folder.
If you did not save the ESETScan log, click Posted Image > Run..., then type or copy and paste everything in the code box below into the Open dialogue box:

C:\Program Files\ESET\EsetOnlineScanner\log.txt
  • Click Ok and the scan results will open in Notepad.
  • Copy and paste the contents of log.txt in your next reply.
-- Some online scanners will detect existing anti-virus software and refuse to cooperate. You may have to disable the real-time protection components of your existing anti-virus and try running the scan again. If you do this, remember to turn them back on after you are finished.

NOTE: In some instances if no malware is found there will be no log produced.
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#3 karenbc

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Posted 04 February 2011 - 12:28 AM

Thank you very much for your assistance!

This is an XP machine.

Here's the contents of the ESET scan log:

ESETSmartInstaller@High as downloader log:
all ok
# version=7
# OnlineScannerApp.exe=1.0.0.1
# OnlineScanner.ocx=1.0.0.6419
# api_version=3.0.2
# EOSSerial=5eca2137718cfe42aeb6ed2143a04b6a
# end=finished
# remove_checked=true
# archives_checked=true
# unwanted_checked=true
# unsafe_checked=false
# antistealth_checked=true
# utc_time=2011-02-04 04:50:59
# local_time=2011-02-03 11:50:59 (-0500, Eastern Standard Time)
# country="United States"
# lang=1033
# osver=5.1.2600 NT Service Pack 2
# compatibility_mode=1024 16777175 100 0 49000038 49000038 0 0
# compatibility_mode=8192 67108863 100 0 0 0 0 0
# scanned=70572
# found=2
# cleaned=2
# scan_time=9990
C:\Documents and Settings\Anne\Local Settings\Temp\jar_cache4775240664076062279.tmp multiple threats (deleted - quarantined) 00000000000000000000000000000000 C
C:\Documents and Settings\Anne\Local Settings\Temp\jar_cache8939509690800212975.tmp multiple threats (deleted - quarantined) 00000000000000000000000000000000 C

#4 boopme

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Posted 04 February 2011 - 11:43 AM

You're very welcome. I would still want to do this and then I feel we will be good.

Next run ATF and SAS: If you cannot access Safe Mode,run in normal ,but let me know.

Note: On Vista, "Windows Temp" is disabled. To empty "Windows Temp" ATF-Cleaner must be "Run as an Administrator".

From your regular user account..
Download Attribune's ATF Cleaner and then SUPERAntiSpyware , Free Home Version. Save both to desktop ..
Close all open browsers before using, especially FireFox. <-Important!!!
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.


Rerun MBAM (MalwareBytes) like this:

Open MBAM in normal/regular mode and click Update tab, select Check for Updates,when done
click Scanner tab,select Quick scan and scan (normal mode).
After scan click Remove Selected, Post new scan log and Reboot into normal mode.

Please ask any needed questions,post logs and Let us know how the PC is running now.
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

#5 karenbc

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Posted 04 February 2011 - 05:02 PM

I'm eager to proceed with this. However, I won't be able to access the computer until Tuesday of next week. I will definitely post the info you requested on Tuesday. Thank you again for your help!

#6 boopme

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Posted 04 February 2011 - 07:06 PM

No problemo..
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#7 karenbc

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Posted 09 February 2011 - 12:00 AM

I'm in the process of running the SuperAntispyware scan. I'm guessing it's going to take awhile -- I'll get the results posted tomorrow (Wednesday).

Edited by karenbc, 09 February 2011 - 09:54 AM.


#8 boopme

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Posted 09 February 2011 - 10:52 AM

OK, some scans are longer then others..There are a variety of causes.
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 karenbc

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Posted 09 February 2011 - 05:57 PM

Here are the logs you requested. As I noted below, I removed the Adware.Tracking Cookie section from the SUPERAntiSpyware log to keep the computer owner's name from appearing here.


SUPERAntiSpyware Scan Log
http://www.superantispyware.com

Generated 02/09/2011 at 01:37 AM

Application Version : 4.48.1000

Core Rules Database Version : 6364
Trace Rules Database Version: 4176

Scan type : Complete Scan
Total Scan Time : 01:49:47

Memory items scanned : 229
Memory threats detected : 0
Registry items scanned : 6840
Registry threats detected : 3
File items scanned : 64236
File threats detected : 417

Parasite.CoolWebSearch Variant
HKLM\Software\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{CF021F40-3E14-23A5-CBA2-71766C641306}
HKCR\CLSID\{CF021F40-3E14-23A5-CBA2-71766C641306}
HKU\S-1-5-21-3852255402-104724495-1602489464-1005\Software\Microsoft\Windows\CurrentVersion\Ext\Stats\{CF021F40-3E14-23A5-CBA2-71766C641306}

Adware.Tracking Cookie
(I removed this section before posting)

Trojan.Agent/Gen-Cryptor[Egun]
C:\RECYCLER\NPROTECT\00062278.EXE

*************************************************************

Malwarebytes' Anti-Malware 1.50.1.1100
www.malwarebytes.org

Database version: 5719

Windows 5.1.2600 Service Pack 2
Internet Explorer 8.0.6001.18702

2/9/2011 10:16:25 AM
mbam-log-2011-02-09 (10-16-25).txt

Scan type: Quick scan
Objects scanned: 168924
Time elapsed: 29 minute(s), 7 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)


Let me know if there's any other info you need.
Thanks!

#10 boopme

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Posted 09 February 2011 - 08:02 PM

Looks good. How is it running now? A note about the original (Backdoor.Bot)
This allows hackers to remotely control your computer, steal critical system information and download and execute files.
If you do any banking or other financial transactions on the PC or if it should contain any other sensitive information, please change all passwords where applicable, and it would be wise to contact those same financial institutions to apprise them of your situation.


I also see you have not installed XP's Service Pack 3. If you use the IE browser this contains security leak fixes for that browser.
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

#11 karenbc

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Posted 09 February 2011 - 10:16 PM

The computer seems to be running fine. I have advised my mother (the computer's owner) of the dangers related to the Backdoor.Bot -- I'll insist that she takes the appropriate steps to protect herself.

For my own clarification, the Backdoor.Bot could have enabled a hacker to have already obtained critical system information and/or sensitive information, but by changing the password to log on to the computer, coupled with the scanning programs we ran to eradicate malicious stuff, the computer should be protected from a hack via the Backdoor.Bot -- is that correct?

#12 boopme

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Posted 09 February 2011 - 10:38 PM

Yes that password,email and any financial passwords must be changed.

If there are no more problems or signs of infection, you should Create a New Restore Point to prevent possible reinfection from an old one. Some of the malware you picked up could have been saved in System Restore. Since this is a protected directory your tools cannot access to delete these files, they sometimes can reinfect your system if you accidentally use an old restore point. Setting a new restore point AFTER cleaning your system will help prevent this and enable your computer to "roll-back" to a clean working state.

The easiest and safest way to do this is:
  • Go to 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 R.P. a name, then click "Create". The new point will be stamped with the current date and time. Keep a log of this so you can find it easily should you need to use System Restore.
  • Then use Disk Cleanup to remove all but the most recently created Restore Point.
  • Go to Start > Run and type: Cleanmgr
  • Click "Ok". Disk Cleanup will scan your files for several minutes, then open.
  • Click the "More Options" tab, then click the "Clean up" button under System Restore.
  • Click Ok. You will be prompted with "Are you sure you want to delete all but the most recent restore point?"
  • Click Yes, then click Ok.
  • Click Yes again when prompted with "Are you sure you want to perform these actions?"
  • Disk Cleanup will remove the files and close automatically.
Vista Users can refer to these links: Create a New Restore Point and Disk Cleanup.

Tips to protect yourself against malware and reduce the potential for re-infection:Avoid gaming sites, pirated software, cracking tools, keygens, and peer-to-peer (P2P) file sharing programs. They are a security risk which can make your computer susceptible to a smörgåsbord of malware infections, remote attacks, exposure of personal information, and identity theft. Many malicious worms and Trojans spread across P2P file sharing networks, gaming and underground sites. Users visiting such pages may see innocuous-looking banner ads containing code which can trigger pop-up ads and malicious Flash ads that install viruses, Trojans and spyware. Ads are a target for hackers because they offer a stealthy way to distribute malware to a wide range of Internet users. The best way to reduce the risk of infection is to avoid these types of web sites and not use any P2P applications. Read P2P Software User Advisories and Risks of File-Sharing Technology.

Keeping Autorun enabled on USB and other removable drives has become a significant security risk due to the increasing number of malware variants that can infect them and transfer the infection to your computer. To learn more about this risk, please read:
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

#13 karenbc

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Posted 10 February 2011 - 12:12 AM

Thank you very much for your assistance. I truly appreciate it!

#14 boopme

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Posted 10 February 2011 - 10:51 AM

You're welcome from all here.
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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