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Help with cycbot:b trojan


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6 replies to this topic

#1 fiveohart

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Posted 25 October 2010 - 10:46 PM

I infected my net book with this. As soon as MSE started running the scan I knew I was in trouble but I couldn't stop it. I was able to disable the Internet connection soon as possible. I started the net book up again not realizing the Internet connection restarts on startup. Nao able to get to any sites even though I was connected (wireless). Using another pc I changed all user ids and passwords on financial sites and even ones I felt were volatile. Now what? I saw a post with instructions to remove this but I have a different os and didn't know if that would work on my windows sp home service pack 3 os on the net book. Please advise. Thanks!!

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#2 boopme

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Posted 26 October 2010 - 12:23 AM

Hello, This backdoor does many bad things.
•Download and execute arbitrary files
•Upload files
•Spread to other computers using various methods of propagation
•Log keystrokes or steal sensitive data
•Modify system settings
•Run or terminate applications
•Delete files

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.

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. 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

We can still clean this machine but I can't guarantee that it will be 100% secure afterwards. Let me know what you decide to do.




Next run MBAM (MalwareBytes):

Please download Malwarebytes Anti-Malware and save it to your desktop.
Download Link 1
Download Link 2MBAM 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. Temporarily disable such programs or permit them to allow the changes.
  • Make sure you are connected to the Internet.
  • Double-click on mbam-setup.exe to install the application.
    For instructions with screenshots, please refer to the How to use Malwarebytes' Anti-Malware Guide.
  • 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 definition updates, manually download them from here and just double-click on mbam-rules.exe to install.
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. Be sure to post the complete log to include the top portion which shows MBAM's database version and your operating system.
  • Exit MBAM when done.
Note: If MBAM encounters a file that is difficult to remove, you will be asked to reboot your computer so MBAM can proceed with the disinfection process. If asked to restart the computer, please do so immediately. Failure to reboot normally (not into safe mode) will prevent MBAM from removing all the malware.

Troubleshoot Malwarebytes' Anti-Malware


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 ..
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.
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

#3 fiveohart

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Posted 26 October 2010 - 01:47 PM

Hi and thank you. Question... the first instruction begins with "Next run MBAM". please confirm thats the first step and there isn't a previous one missing. Also, I can't get to the Internet so how will I download this program? thanks again

#4 boopme

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Posted 26 October 2010 - 02:45 PM

Yes that is the step.. I guees I should a have said ...If you decide to clean the Next step is run MBAM..
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 fiveohart

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Posted 28 October 2010 - 11:15 PM

Ok... did all the steps, very easy to follow thank you. the logs you requested are below. After all was done, rebooted. Still cannot access Internet with IE

Malwarebytes' Anti-Malware 1.46
www.malwarebytes.org

Database version: 4982

Windows 5.1.2600 Service Pack 3
Internet Explorer 8.0.6001.18702

10/28/2010 9:34:50 PM
mbam-log-2010-10-28 (21-34-50).txt

Scan type: Quick scan
Objects scanned: 139708
Time elapsed: 16 minute(s), 20 second(s)

Memory Processes Infected: 0
Memory Modules Infected: 0
Registry Keys Infected: 0
Registry Values Infected: 1
Registry Data Items Infected: 1
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:
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows\load (Trojan.Agent) -> Quarantined and deleted successfully.

Registry Data Items Infected:
HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell (Hijack.Shell) -> Bad: (explorer.exe,C:\Documents and Settings\Pamela Valentine\Application Data\Microsoft\Windows\shell.exe) Good: (Explorer.exe) -> Quarantined and deleted successfully.

Folders Infected:
(No malicious items detected)

Files Infected:
(No malicious items detected)


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

Generated 10/28/2010 at 10:51 PM

Application Version : 4.45.1000

Core Rules Database Version : 5767
Trace Rules Database Version: 3579

Scan type : Complete Scan
Total Scan Time : 00:54:59

Memory items scanned : 229
Memory threats detected : 0
Registry items scanned : 6094
Registry threats detected : 0
File items scanned : 43254
File threats detected : 16

Adware.Tracking Cookie
cdn4.specificclick.net [ C:\Documents and Settings\Pamela Valentine\Application Data\Macromedia\Flash Player\#SharedObjects\WPYVKV5J ]
core.insightexpressai.com [ C:\Documents and Settings\Pamela Valentine\Application Data\Macromedia\Flash Player\#SharedObjects\WPYVKV5J ]
files.youporn.com [ C:\Documents and Settings\Pamela Valentine\Application Data\Macromedia\Flash Player\#SharedObjects\WPYVKV5J ]
ia.media-imdb.com [ C:\Documents and Settings\Pamela Valentine\Application Data\Macromedia\Flash Player\#SharedObjects\WPYVKV5J ]
media-ut.pictela.net [ C:\Documents and Settings\Pamela Valentine\Application Data\Macromedia\Flash Player\#SharedObjects\WPYVKV5J ]
media.mtvnservices.com [ C:\Documents and Settings\Pamela Valentine\Application Data\Macromedia\Flash Player\#SharedObjects\WPYVKV5J ]
media.scanscout.com [ C:\Documents and Settings\Pamela Valentine\Application Data\Macromedia\Flash Player\#SharedObjects\WPYVKV5J ]
media01.kyte.tv [ C:\Documents and Settings\Pamela Valentine\Application Data\Macromedia\Flash Player\#SharedObjects\WPYVKV5J ]
mediaforgews.com [ C:\Documents and Settings\Pamela Valentine\Application Data\Macromedia\Flash Player\#SharedObjects\WPYVKV5J ]
msnbcmedia.msn.com [ C:\Documents and Settings\Pamela Valentine\Application Data\Macromedia\Flash Player\#SharedObjects\WPYVKV5J ]
objects.tremormedia.com [ C:\Documents and Settings\Pamela Valentine\Application Data\Macromedia\Flash Player\#SharedObjects\WPYVKV5J ]
s0.2mdn.net [ C:\Documents and Settings\Pamela Valentine\Application Data\Macromedia\Flash Player\#SharedObjects\WPYVKV5J ]
secure-us.imrworldwide.com [ C:\Documents and Settings\Pamela Valentine\Application Data\Macromedia\Flash Player\#SharedObjects\WPYVKV5J ]
udn.specificclick.net [ C:\Documents and Settings\Pamela Valentine\Application Data\Macromedia\Flash Player\#SharedObjects\WPYVKV5J ]
www.naiadsystems.com [ C:\Documents and Settings\Pamela Valentine\Application Data\Macromedia\Flash Player\#SharedObjects\WPYVKV5J ]
www.pornhub.com [ C:\Documents and Settings\Pamela Valentine\Application Data\Macromedia\Flash Player\#SharedObjects\WPYVKV5J ]

#6 fiveohart

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Posted 28 October 2010 - 11:52 PM

update- I reset IE settings to default condition and its now displaying urls fine. Thank you again. Please inform after viewing the logs if it would be wise to format and reload as you mentioned.

#7 boopme

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Posted 29 October 2010 - 09:41 PM

Hello, I would still like to ru one more,an onlinr scan before we mop up. I am concerned with the reload I gues mostly if you were to do any online banking,purchasing,etc,, where you could be at risk of theft.

Please perform a scan with Eset Online Antiivirus Scanner.
This scan requires Internet Explorer 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.
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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