This rogue is looking for the OS version (XP, Vista, Seven) and adapt its name from the system found: Win7 Defender, XP Defender, Vista Defender, Win Server Defender (...). As usual it displays fake warning messages to push users into buying a license.
It belongs to the same family as PC Defender Plus.
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The rogue is closing legit software. You can register by entering the following serial code:
xOxZxLxWxIxTxFxQxCxNxYxKxVxHxSxE (manual registration).
Thanks to @ISergey256
It belongs to the same family as PC Defender Plus.

The rogue is closing legit software. You can register by entering the following serial code:
xOxZxLxWxIxTxFxQxCxNxYxKxVxHxSxE (manual registration).
Thanks to @ISergey256