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cryptolocker Virus Affected 12,000 computers all over the world

CryptoLocker Virus Infects 12,000 Computers In One Week: How Hackers Are Avoiding Detection 

The new CryptoLocker malware threatens to encrypt a user's hard drive unless they pay $300 in Bitcoins. Sophos

Bitdefender Labs, an American and Romanian anti-virus company, found that in the week beginning Oct. 27, more than 12,000 computers were infected with the CryptoLocker virus, a malware capable of holding the contents of a hard drive for ransom. Bitdefender also noted that the hackers behind CryptoLocker seem to be exclusively targeting computers in the U.S.

A study finds that the CryptoLocker hackers are targeting Americans.  Bitdefender

The CryptoLocker hackers use an algorithm to generate new command and control subdomains every day, making it difficult to track down the criminal hackers.

Bitdefender reverse-engineered this domain generation algorithm and sinkholed the relevant domain names, which allowed Bitdefender to register the CryptoLocker domains before they disappeared.

Related

Between Oct. 27 and Nov. 1, 12,016 hosts infected with CryptoLocker contacted the sinkholed domains. So many came from IP addresses in the U.S. that Bitdefender concluded that infections in other countries are simply collateral damage of an attack aimed there.

To further hide their tracks, the CryptoLocker hackers are frequently changing the servers that host the CryptoLocker virus. Bitdefender told IB Times that it’s rare for CryptoLocker to remain on the same server for more than a week. In the week Bitdefender monitored, Cryptolocker servers were identified in Russia, Germany, Kazakhstan and the Ukraine.

Unfortunately, this constant “server hopping” is only going to make it more difficult to catch the criminal hackers.

The CryptoLocker virus is spread through phony FedEx and UPS tracking notifications, as well as emails pretending to come from other legitimate businesses. One the malicious link is opened, the malware scans a harddrive for documents, spreadsheets, photos and more before encrypting them. CryptoLocker then launches a pop-up window with a counting down clock. If a $300 ransom is not paid in Bitcoin before the time expires, the decryption key is deleted and the user may never regain access to their files.

Recently, the CryptoLocker hackers began offering a second chance to claim the decryption key, but the ransom is five times that of the original ransom.

Security experts are working on anti-decryption software than can  guard against the CryptoLocker virus. In the meantime, they advise users to remain vigilant regarding links they open and to not give into demands if infected with CryptoLocker. 

Source:http://www.ibtimes.com

How To Programmatically Create a DSN for SQL Server with VB

DSNs are usually created through the ODBC Data Source Administrator window, which is accessible from the Windows Control Panel (or Administrator Tools in Windows 2000). Other techniques that provide access to ODBC-compliant databases include using RegisterDatabase (a Data Access Object (DAO) method), using the SQLConfigDataSource ODBC API function, or using a DSN-less connection string.

However, it is possible to establish a new DSN by manually creating and manipulating values in the Windows Registry. The following technique uses the RegCreateKey, RegSetValueEx, and RegCloseKey API functions to create a system DSN for a SQL Server database.

Step-by-Step Procedures

1. Open a new Visual Basic project. Form1 is created by default. Put a CommandButton on Form1 (Command1), and put the following code in the General Declarations section of the code for Form1:

       Option Explicit
   
       Private Const REG_SZ = 1    'Constant for a string variable type.
       Private Const HKEY_LOCAL_MACHINE = &H80000002
   
       Private Declare Function RegCreateKey Lib "advapi32.dll" Alias _
          "RegCreateKeyA" (ByVal hKey As Long, ByVal lpSubKey As String, _
          phkResult As Long) As Long
   
       Private Declare Function RegSetValueEx Lib "advapi32.dll" Alias _
          "RegSetValueExA" (ByVal hKey As Long, ByVal lpValueName As String, _
          ByVal Reserved As Long, ByVal dwType As Long, lpData As Any, ByVal _
          cbData As Long) As Long
   
       Private Declare Function RegCloseKey Lib "advapi32.dll" _
          (ByVal hKey As Long) As Long
         

2. Place the following code in the click event of the Command1 button on Form1:
   
   Change the values of the DataSourceName, DatabaseName, Description, DriverPath, LastUser, and Server variables as appropriate for your environment. Any of the drivers listed on the ODBC Drivers tab of the ODBC Data Source Administrator window can be used as part of the DriverPath variable. All of these drivers can be found in C:\Windows\System for Windows 95 or Windows 98 machines and C:\Winnt\System32 for Windows NT.

      Private Sub Command1_Click()
   
      Dim DataSourceName As String
      Dim DatabaseName As String
      Dim Description As String
      Dim DriverPath As String
      Dim DriverName As String
      Dim LastUser As String
      Dim Regional As String
      Dim Server As String
   
      Dim lResult As Long
      Dim hKeyHandle As Long
   
      'Specify the DSN parameters.
   
      DataSourceName = "<the name of your new DSN>"
      DatabaseName = "<name of the database to be accessed by the new DSN>"
      Description = "<a description of the new DSN>"
      DriverPath = "<path to your SQL Server driver>"
      LastUser = "<default user ID of the new DSN>"
      Server = "<name of the server to be accessed by the new DSN>"
      DriverName = "SQL Server"
   
      'Create the new DSN key.
   
      lResult = RegCreateKey(HKEY_LOCAL_MACHINE, "SOFTWARE\ODBC\ODBC.INI\" & _
           DataSourceName, hKeyHandle)
   
      'Set the values of the new DSN key.
   
      lResult = RegSetValueEx(hKeyHandle, "Database", 0&, REG_SZ, _
         ByVal DatabaseName, Len(DatabaseName))
      lResult = RegSetValueEx(hKeyHandle, "Description", 0&, REG_SZ, _
         ByVal Description, Len(Description))
      lResult = RegSetValueEx(hKeyHandle, "Driver", 0&, REG_SZ, _
         ByVal DriverPath, Len(DriverPath))
      lResult = RegSetValueEx(hKeyHandle, "LastUser", 0&, REG_SZ, _
         ByVal LastUser, Len(LastUser))
      lResult = RegSetValueEx(hKeyHandle, "Server", 0&, REG_SZ, _
         ByVal Server, Len(Server))
   
      'Close the new DSN key.
   
      lResult = RegCloseKey(hKeyHandle)
   
      'Open ODBC Data Sources key to list the new DSN in the ODBC Manager.
      'Specify the new value.
      'Close the key.
   
      lResult = RegCreateKey(HKEY_LOCAL_MACHINE, _
         "SOFTWARE\ODBC\ODBC.INI\ODBC Data Sources", hKeyHandle)
      lResult = RegSetValueEx(hKeyHandle, DataSourceName, 0&, REG_SZ, _
         ByVal DriverName, Len(DriverName))
      lResult = RegCloseKey(hKeyHandle)
   
      End Sub
         

3. Run the project and click on the Command1 command button. Then open up the ODBC Data Source Administrator from the Control Panel (or Administrator Tools in Windows 2000). Your new DSN will appear along with the other system DSNs that you have already created.                                                            Source :http://support.microsoft.com/kb/184608

Blocking Users by IP

By Brian Kelley, 2013/11/08 (first published: 2009/03/09)

One of the things I like about MySQL is the built-in control over what hosts/IP addresses are allowed to connect into the server. This is granular down to the user (equivalent to SQL Server's login/server principal). For instance, here's an example on one of my MySQL instances of where the root account (equivalent to sa for SQL Server) can log in from:

mysql> use mysql;
Database changed
mysql> select host, user from user where user = 'root';
+-----------+------+
|   host    | user |
+-----------+------+
| localhost | root |
+-----------+------+
1 row in set (0.03 sec)

mysql>

Note that the only host defined is localhost. In other words, if someone were to try and connect to the MySQL server using the root user account from anywhere other than the local machine, MySQL is not going to permit it. They could have the credentials right, but it won't matter, as MySQL will block the connection. Should I try from a different location, I'll get an error similar to:

ERROR 1045 (28000): Access denied for user 'root'@'<client name>' (using password: YES)

If I try and trick it and specify root@localhost, I get the following error:

ERROR 1045 (28000): Access denied for user 'root@localhost'@'<client name>' (using password: YES)

I love this level of control, especially when you have scenarios like the following:

In this particular case, we should know the login coming in from the web server. And if best practices were followed, this login has limited rights to the database(s) for the web application. It should not be a member of the sysadmin fixed server role. And any login attempts coming from the web server should not be made with a login that is a member of the sysadmin fixed server role, and especially not the sa account. Should we see anything like that, that's trouble and we'd like to block it.
Unfortunately, SQL Server doesn't have the same capabilities with respect to specifying what IPs or hosts a login can come in from, at least nothing built-in that's as clear and simple as with MySQL. I'd like to see something similar to the way MySQL handles it. But until then, there is a way to do this using logon triggers which some folks have hit upon. If you're not familiar with logon triggers, they are similar to DDL triggers, except they fire on a logon event (such as when someone connects to SQL Server). They were quietly introduced in SQL Server 2005 SP2, and they give us the ability to rollback a connection, thereby effectively terminating it. If you're still supporting SQL Server 2000 or below servers, you'll have to use another means to control connections.

Using EVENTDATA

The key to all of this working in 2005 SP2 and above is the EVENTDATA() function. EVENTDATA() is a function that returns information about an event (as the name implies) and is accessible within a DDL or logon trigger. The information is in XML, so there's a slight trick to extracting the details but it's not terribly difficult. And when it comes to a logon trigger, one of those details is a field called ClientHost, which happens to contain the IP address of the client in the event of a remote connection, or the string '<local machine>' if the connection was made from the same system where SQL Server was running. To obtain this information, we do the following:

DECLARE @IP NVARCHAR(15);
SET @IP = (SELECT EVENTDATA().value('(/EVENT_INSTANCE/ClientHost)[1]', 'NVARCHAR(15)'));

This is assuming an IPv4 based IP address which could be XXX.XXX.XXX.XXX, or up to 15 characters long. By retrieving the IP address of the client we can compare it versus a list of valid or restricted IPs, depending on how we want to enforce based on IP.

Building an IP Table

In my case, I like to whitelist access whenever possible. In other words, all access is blocked unless explicitly permitted (blacklisting is the opposite, where everything is permitted unless explicitly blocked). This is the preferred security practice if you can do it, but understandably may not work in all situations. But assuming we can whitelist, here's a simple table structure:

CREATE TABLE dbo.ValidIP (
  IP NVARCHAR(15),
  CONSTRAINT PK_ValidIP PRIMARY KEY CLUSTERED (IP)
);
GO

In this article I'm simply going to be blocking members of the sysadmin fixed server role from logging on except from specified IP addresses, hence the reason I'm only specifying IPs, and not logins. This is ideal if you can work with your network administrators to assign DHCP reservations for the DBAs' workstations. In this way they'll be assigned the same IP address every time. You could just as easily construct a restricted IP address table (where, if you see a connection from a particular IP address, you block, but otherwise permit), or expand it to include both IPs and logins. You could also use subnets or IP ranges, but those are variants off the main idea, so I won't cover them here. Whatever you do, one thing you'll likely want to do is ensure you include connections from the local system. In the example table, it's as simple as:

INSERT INTO dbo.ValidIP (IP) VALUES ('<local machine>');

Building the Logon Trigger

The next step is to build the logon trigger itself. Here's what we're looking to do with this example:

• Check to see if the login is a member of the sysadmin fixed server role.
• If that's the case, check to see if the ClientHost value matches one of the valid IPs specified in the ValidIP table.
• If it doesn't, issue a ROLLBACK, thereby ending the connection.

Now I don't like throwing objects in the master database. Therefore, I usually create a work database which I call DBAWork or something similar. The risk is that if, for some reason, the database is unavailable (or the table is), then the logon trigger is going to receive the error and it's going to issue an automatic rollback, thereby terminating the connection. There's a workaround which you can use to disable the trigger, but I'll cover that in a bit. Now that we know what we want to do and we know the location of the table, it's time to put the trigger together:

CREATE TRIGGER tr_logon_CheckIP 
ON ALL SERVER
FOR LOGON
AS
BEGIN
  IF IS_SRVROLEMEMBER('sysadmin') = 1
  BEGIN
   DECLARE @IP NVARCHAR(15);
   SET @IP = (SELECT EVENTDATA().value('(/EVENT_INSTANCE/ClientHost)[1]', 'NVARCHAR(15)'));
   IF NOT EXISTS(SELECT IP FROM DBAWork.dbo.ValidIP WHERE IP = @IP)
     ROLLBACK;
  END;
END;
GO

What makes it a logon trigger is the ON ALL SERVER which tells SQL Server it's at the server level and the FOR LOGON option. A DDL trigger can also be at the server level with ON ALL SERVER, so the FOR LOGON differentiates the two. Inside the trigger itself, note that we're looking for a match between the result we get from ClientHost and what's stored in the table. If we get '<local machine>', that has been taken care of. Should a connection be attempted for a login that is a member of the sysadmin fixed server role from other than a valid IP address, an error will be returned. If you're using SQL Server Management Studio, you'll see something like this (note why the connection is being broken highlighted in red):

The login failed because of the trigger execution. In other words, the ROLLBACK killed the login attempt. If you have an error when executing the trigger, you'll see the same sort of dialog window. In that case, it's important to know how to get into SQL Server to fix the issue.

Connecting When a Logon Trigger Is Blocking and It Shouldn't Be

Since the logon trigger will fire for all connections (with one exception) if there is ever a problem, either because the IPs are wrong or because there's an issue with the database or table, then getting in and turning off the trigger becomes paramount to restoring availability. In this case, the Dedicated Administrator Connection (DAC) is your friend. Connections via the DAC do not cause logon triggers to fire. So if a logon trigger is blocking connectivity, then you'll want to come in via the DAC. The default DAC configuration only permits a DAC connection from the local computer. You can configure it for remote access, but if you have logon rights to the server where SQL Server is running (such as through Remote Desktop), it's probably not a good idea to do so, because it creates another point to attack. Better to connect and then establish the DAC connection from the server itself. In either case, to connect using the DAC, if you're using SQLCMD, make sure to specify the -A parameter (case-sensitive) and if you're using SQL Server Management Studio (SSMS), precede the name of the SQL Server with ADMIN: to connect. For instance, if I was trying to connect to MyServer using the DAC in SSMS, I would use ADMIN:MyServer as the connection.
After you are connected in this manner, the next step is to either disable or drop the trigger. To disable the trigger, the syntax is:

DISABLE TRIGGER <trigger name> ON ALL SERVER;

To drop the trigger, the syntax is similar:

DROP TRIGGER <trigger name> ON ALL SERVER;

Closing Thoughts

While it is tempting to implement a very robust solution using logon triggers, keep in mind that a logon trigger will fire for every connection. Therefore, it is best to limit what it does both to reduce the likelihood of blocking connections unintentionally and to reduce overall resource usage. A complex logon trigger will cause every connection to slow down, and this could result in a performance or reliability issue. Therefore, it's best to keep the rules simple and straight-forward. If you need something complex, you might look at operating system solutions such as IPSEC or networking solutions such as the use of firewalls and IDS/IPS. If you keep it simple, using a logon trigger in this manner can help provide an extra layer of security to your SQL Servers without too much additional worry or maintenance.

Source :http://www.sqlservercentral.com 

How to get the most out of wireless network on Windows 8

How to get the most out of wireless network on Windows 8

Connecting to a wireless network in Windows 8 is far less painful than it was in Windows 7. However, a few things that should be easy and obvious are in fact a bit tricky. 

You may be having problems connecting to a wireless network in Windows 8, or find that you're regularly entering PEAP credentials each time you want to get online. You might find that your device connects to the wrong wireless network, or simply want to use it as a wireless hotspot. 

While none of these things are clearday to day use of Windows 8, they are, however, easily done - once you know how. 

Connecting to a wireless network in Windows 8 

We'll start with the basics - how do you connect to a wireless network in Windows 8?

By default, most new Windows 8 computers will be set to connect to wireless networks automatically as the operating system boots. As such, you should see an alert informing you that a network has been found; an open network will be connected to, with Windows asking you how you wish to treat the connection (as a trusted, "home" network or as a less secure option, "work"). Secure networks will require authentication, of course. 

What if Wi-Fi isn't already enabled in Windows 8? 

Begin by swiping inthe right to open thems bar and Settings. Here you should see an icon labelled Unavailable, with a red circle and cross accompanying a typical wireless network symbol. Tap this, and switch Wi-Fi to On in order to prompt the computer to check the nearby network connections. When you're ready to go online, tap a network name and then Connect, adding any further information (such as WEP, WPA or PEAP authentication) when prompted.

If you would rather do things the old-fashioned way, open the desktop view and browse to Control Panel > Network and Internet > Network and Sharing Center > Setup a new connection or network > Manually connect to a wireless network. 

Changing the priority of Wi-Fi networks natively 

As you may have noticed, there are various thingsWindows 7 that didn't make it through to Windows 8. One of these was a wireless network manager, enabling you to prioritise a particular wireless network to connect to if several were listed. In Windows 8 this isn't possible within the user interface (neither the mouse driven traditional desktop view, nor the "Modern" touch menu), so the default action is to skip tapping the Connect automatically, making the whole connection process a lot more manual. 

Fortunately, there is a way around this that doesn't rely on third party tools (although some are available).

Begin by switching to the Start screen and typing command to search for the Command Prompt tool (simpler to use than you might think); in Windows 8, this will be listed twice, Command Prompt and Command Prompt as Administrator. Choose the second option, agreeing with the user access warning. In Windows 8.1, the search results will simply list Command Prompt once - you'll need to right-click and Run as administrator to continue. 

At the prompt, enter: netsh wlan show profiles 

The resulting list will showwireless networks detected to date by your Windows 8 machine, those you've connected to and some you have not. You'll probably also notice that your preferred network isn't at the top of the list. 

Using the interface and profile names, you can resolve this.netsh wlan set profileorder name="[WIRELESS_NETWORK_NAME]" interface="Wi-Fi" priority=1For instance, if I wanted "citadel" to be my preferred connection, I would enter: netsh wlan set profile order name="citadel" interface="Wi-Fi" priority=1Note the use of the "priority" condition, which can be used throughout the list to specify a preferred second, third and fourth connection; as many as are required. 

To confirm your change has worked, use the netsh wlan show profiles command again. You should now see that your preferred network is listed first. 

Use third party tools to set preferred wireless networks 

If the steps above seem too muchthe dark arts to you, then you might prefer the Wi-Fi Profile Manager 8 donationware app, available free onlineThe Windows Club. If you're not sure what donationware is, our guide to researching free software should explain.

Wi-Fi Profile Manager 8 offers tools that allow you to: 

View the preferred network profiles, change list order, export to XML, importXML and remove profiles. 

This useful app is an executable and can be quickly run (as opposed to installed), enabling you to set a primary wireless profile by right-clicking and selecting Make Default. Other profiles can be repositioned in the list using the Move Up and Move Down options in the same menu, and older profiles discarded with Remove. 

Remember PEAP authentication in Windows 8 

Protected Extensible Authentication Protocol is a modern wireless networking protocol that offers improved security over WEP and WPA. It is supported in Windows 8, but unlike the more widely used WEP and WPA, connecting to a wireless network using PEAP requires you to enter your username and password and the intended domain each time you connect. 

This is, of course, inconvenient. Fortunately, Windows 8 can be configured to save your PEAP Wi-Fi connection details. 

Open thems menu to begin, the PEAP network connection and right-click to display the context menu; choose View connection properties to continue, displaying Wireless Network Properties.here, open Security > Advanced Settings. 

On the 802.1x tab, put a check in the box to activate Specify authentication mode and ensure that the User authentication option is selected, followed by Replace/Save credentials. Following this, enter the network credentials, click OK and then reconnect - you won't need to update these details again! 

Turn Windows 8 into a wireless hotspot 

What about sharing your Windows 8 computer's Internet connection? Can you turn a Windows 8 device into a wireless hotspot? 

Well, as a matter of fact, yes you can. Using Connectify - availablewww.connectify.me/download in free and premium ($25/year, $40/lifetime) versions - you can set up your Windows 8 computer as a wireless hotspot, sharing Ethernet, Wi-Fi or even connectionsa 3G/4G dongle!

Once installed (you'll need to reboot your PC afterwards),you need to do is create a name for the hotspot, specify the connection you're sharing and generate a password, before clicking Start Hotspot. Anyone nearby will then be able to use your computer as a wireless hotspot to gain access to the Internet. You can also use Connectify to create ad hoc local networks for file sharing between computers! 

Note that there are other tools; however, Connectify is the best option we've found for this so far. 

Maximise Windows 8's wireless networking capabilities 

Some of you reading this might be thinking "why doesn't Microsoft includeof these tools and features as standard within the desktop or modern user interface?" After all, mobile devices can be turned into wireless hotspots with native software, so why not PCs? 

The answer, of course, lies somewhere between "don't know" and "Microsoft provide a platform for developers to fill in the gaps." However, the fact that Windows 7 includes the ability to easily prioritise a particular wireless network over others, while the same feature in Windows 8 can only be accessed via the command line, is one that can leave you perplexed.

Source: http://www.techgig.com/tech-news

Passport Seva mobile app now on Windows & iOS

In order to keep pace with the current technology, the Ministry of  External Affairs had launched the mPassport Seva mobile app on Android platform, as a pilot, on 21st March 2013. Encouraged by positive public response, the Ministry has now launched this app on Windows and Apple iOS platforms as well. 

The app provides passport-related information on the smartphones. This is an extended service of the Passport Seva Project, executed in Public-Private-Partnership mode with Tata Consultancy Services. 

mPassport Seva, enables Indian Citizens to access Passport related information on their Smartphones. This application provides a wide variety of services such as status tracking, locating a Passport Office and other general information. 

The application provides information on various steps involved to obtain a passport related service and related phone numbers in case of queries or concerns. 

The users will be able to search for a Passport Seva Kendra (PSK) or District Passport Cell (DPC) in a districta passport application can be submitted. This can also be searched based on PIN code. For certain States and Districts, the users can search for Police Stations as well. 

Citizens residing overseas who apply for a passport service in Indian Missions/Posts abroad can also utilize this facility for searching address and other relevant information. The Fee Calculator feature of the application enables users to find out the applicable fee based on the service and mode of submission. 

Users can track the status of their passport applications by providing File Number and Date of Birth. In case the passport has been dispatched, delivery status can also be tracked.

Source :http://www.techgig.com/tech-news/

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