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Virus .exe dan new folder.exe

Lama aku tidak jumpa virus jenis .exe selepas beberapa tahun menyerang sistem komputer suatu ketika dulu.Baru-baru ni,repair satu netbook sebab sistem slow.Bila aku cek balik,rupa-rupanya kena serangan '.exe' .Virus komputer adalah sebuah program kecil yang boleh mengembangkan dirinya sendiri dalam media penyimpanan suatu komputer. Formalnya adalah sebagai berikut :
“A program that can infect other programs by modifying them to include a slighty altered copy of itself. A virus can spread throughout a computer sistem or network using the authorization of every user using it to infect their programs. Every programs that gets infected can also act as a virus that infection grows (Fred Cohen).

 Sebagai contoh,virus .exe ataupun mewujudkan dirinya sebagai new folder.exe dimana bila di-klik semakin merebak ia ke dalam folder yang lain.Akibatnya sistem komputer semakin 'slow'.
Kesan daripada jangkitan virus ini adalah seperti:
  1. Disabling Task Manager

  2. Disabling Registry Editor

  3. Creates a startup entry to start upon system start

  4. Creates its own .exe files in Shared Documents folder which appear like ordinary folders.

  5. Disables Folder Options

Tidak semua anti virus mampu untuk membuang virus ini sepenuhnya.Namun ada beberapa kaedah untuk menyelesaikannya seperti penggunaan anti virus kaspersky ataupun avira premium (my research).Selain itu boleh juga menggunakan kaedah secara manual.Sebagai contoh,pergi ke menu search (untuk pengguna win xp sahaja) dan taip '.exe'.Pastikan anda memilih 'search all file and folder'.

Sesudah proses pencarian,delete semua file yang keluar dalam bentuk folder. 

-contoh folder-







Kalau agak malas nak buat manual,download software ni
Smart Virus Remover (889.9 KiB, 747,641 hits)

---> lain orang, lain caranya 
dan 
lain virus, lain pencegahnya <---

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How to setup network (lan) between XP,Vista and 7 Windows PCs

Vista and win7 is Microsoft’s new operating system and it provides different network and security method than Windows XP, to its user. So in order to create network between Vista,7 and XP, we have to enable few network related features on Windows Vista and 7.

First of all we have to turn on “Network Discovery” service; this service allows us to see other network computers and devices from our computer and allows people on other network computers to see our computer. We can also access shared files and devices on other computers and other people can access shared files devices on our computer.

Next we are going to turn on “File Sharing” option. As name suggests it allows us to share folders on LAN. If you turn on this option, then you are also turning on the “Public folder sharing”. Public folder is the default share folder in Windows Vista,7 like “Shared Documents” in Windows XP.
To turn on these features right click on Network and select properties. This will open “Network and Sharing Center” and do as marked in the "Vista Network Sharing Center" images below.











Vista,7 Network Sharing Center (Click to Enlarge)

 
Go to Network Properties to open this window.
Now we will assign IP address to the Vista PC. In Vista we have two types of IP address, IPv4, IPv6. Windows XP also has IPv6 but you have to install it manually. We will use here IPv4 to setup networking between Windows XP and Windows Vista.
Networking with Vista is cakewalk; I assume that Windows XP as properly configured PC and assigned IP “192.168.0.1”, so we will assign IP address to Windows Vista,7.
Now go to Network Properties of Windows Vista PC; this will open a window “Network and Sharing Center”.

Manage network connections

Now on left pane you will see some clickable links under Tasks Menu, click on “Manage network connection” link and It will open “Network Connections”. Here you can see you LAN card “Local Area Connection”. If you cannot see anything here then check your device manager or post comment here, I’ll try to solve that.

LAN adapter

Now it’s time to assign IP address to this LAN adapter, right click on it, select properties. These will pop-up Local Area Connection properties; select “Internet Protocol Version 4” and click properties.

LAN adapter properties

Type “162.168.0.2” in the IP address box and click “Subnet mask” box, this will automatically put the subnet mask address. Click ok and you are done.

IPv4 (TCP/IP) properties

But before you access lets ping XP PC from Vista PC to confirm connectivity. On Vista PC press windows key + R then type “ping 192.168.0.1” without quote and hit Enter key. You should see something like this.

Ping result

You will get something similar response if your network is connected.

Check Firewall Settings

Apart from this you need to check that whether Windows Vista Firewall has created exception for file sharing or not. In my case firewall was blocking the file sharing option and I created a firewall exception in this way.
On Windows Vista,7 PC, go to Control Panel then double click on Windows Firewall. On left pane click on “Allow a program through Windows Firewall”, a “Windows Firewall Setting” window should pop-up. In the “Exception” tab tick “File and Printer Sharing” checkbox and click ok.
 
(sumber daripada http://rajkishor09.hubpages.com)

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Files Hidden by Virus. How to Unhide Them?

The Solution

1. Insert the thumb drive to an empty USB slot. Take note the drive letter. For an example, F:.

2. Press Windows + R, and type “cmd“. Ok.


3. Enter this command,
 
attrib -s -h -r  g:/*.* /s /d



4. Press Enter and wait for the command to execute.

5. Open the thumb drive and you should see the files that were hidden by the virus.

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