How to clean a home PC from network worm Net-Worm.Win32.Kido (Conficker, Downadup)

• It creates files autorun.inf and RECYCLED\{SID<….>}\RANDOM_NAME.vmx on removable drives (sometimes on public network shares)
• It stores itself in the system as a DLL file with a random name, for example, c:\windows\system32\zorizr.dll
• It wp-signup.phps itself in system services with a random name, for example, knqdgsm
• It tries to attack network computers via 445 or 139 TCP port, using MS Windows vulnerability MS08-067.
• It tries to access the following websites in order to get the external IP address of the infected computer (we recommend configuring a network firewall rule to monitor connection attempts to these websites):

• • • http://www.getmyip.org
    • http://getmyip.co.uk
    • http://www.whatsmyipaddress.com
    • http://www.whatismyip.org
    • http://checkip.dyndns.org

1. Anti-Virus product with enabled Intrusion Detection System informs about the attack of Intrusion.Win.NETAPI.buffer-overflow.exploit

   Repeating attack alerts proof that the remote computer (its address is reported in the alert) is infected. It is necessary to disnifect it, if possible.
   
   

2. It is impossible to access websites of the majority of antivirus companies (e.g. mcafee.com, kaspersky.com, etc).
3. An attempt to activate Kaspersky Anti-Virus or Kaspersky Internet Security with an activation code on a computer infected with the Net-Worm.Win32.Kido network worm may result in abnormal termination and output one of the following errors:

4. • Activation procedure completed with system error 2.
   • Activation error: Server name cannot be resolved.
   • Activation error. Unable to connect to server.

You are recommended to do the following on all hosts to prevent workstations and file servers from getting infected with the worm:

1. Install Microsoft patches MS08-067, MS08-068, MS09-001 (on these pages you will have to select which operating system is installed on the infected PC, download corresponding patch and install it).
2. Disable autorun of executable files on removable drives:

• • Download the file kidokiller.exe and save it to a separate folder on the computer (for example, on disk С).
  • Open the Run command: press Win and R keys on the keyboard simultaneously.
• In the Open field of the Run window, enter explorer.exe.
• Click OK.
• Run the kk.exe file with the switch -a. For this, enter the following in the command prompt: С:\kk.exe -a (if the file was saved on disk С)
• Press Enter on the keyboard.

To prevent infection, do the following:

1. Download the kidokiller.exe file and save it to a separate folder on the infected computer. You can find the info on how to download a file on the following pages:
   • For Windows 8
   • For Windows 7
   • For Windows Vista
2. During the work of the utility disable File Anti-Virus if one of the following Kaspersky Lab applications is installed on the infected computer:

   Kaspersky Internet Security 6.0. / 7.0 / 2009 / 2010 / 2011 / 2012 / 2013 / 2014

   Kaspersky Anti-Virus 6.0. / 7.0 / 2009 / 2010 / 2011 / 2012 / 2013 / 2014

3. Run the kk.exe file.

   If the kk.exe file is launched without any additional parameters, then the utility stops active infection (deletes streams, removes interceptions), scans most commonly infected areas, scans the memory, cleans the registry, and scans flash-drives.

4. Wait until the scan is completed.

   When the scan is completed, press any key on the keyboard to close the utility.

   If Agnitum Outpost Firewall is installed on the computer where the KidoKiller utility has been launched, it is necessary to reboot the PC after the utility finishes its work.

5. Scan the entire computer with:
   • Kaspersky Internet Security 2014 / 2013 / 2012
   • Kaspersky Anti-Virus 2014 / 2013 / 2012

For example, in order to scan a flash drive and write a detailed log into the report.txt file (which will be created in the setup folder of the file kk.exe), use the following command:

KK.exe -r -y -l report.txt -v

Example of a command to scan another disk or partition D: KK.exe -p D:\

Source : Official Kaspersky Brand
Editor by : BEST Antivirus KBS Team