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Rogue security software is a type of Trojan that presents itself as antivirus software, and right now there is a very pesky type of rogue circulating the Internet that is very similar to what was called The Protector Rogue, in 2012. The Protector Rogue took its namesake from the file-name protector-xxx.exe (where x’s were random letters). This malware was very common until it was for the most part eradicated in September of last year. This new version of the Protector Rogue has the file-name guard-xxx.exe and the registry run value GuardSoftware. Because hackers are generally lazy, they usually base new malware of off older versions, and GuardSoftware has many of the same components that Protector did. In fact, despite the name change, even the Graphical User Interface (GUI) is still setup for Windows XP. This unchanged GUI is a dead giveaway to anyone running anything past XP. The makers of GuardSoftware have implemented a few new tricks, however, and it’s for this reason that the malware is starting to work. GuardSoftware’s installer, or dropper, has a valid digital signature, which makes it more trustworthy to the human eye at glance and which will bypass certain forms of heuristic detection. At the same time, GuardSoftware utilizes hijacking techniques not previously observed in comparable rogue programs. After installation, GuardSoftware restarts your computer and then essentially locks your desktop with a “Scanning In Progress” screen. This screen is meant to fool users into trusting GuardSoftware, and it even goes as far as allowing you to “disable” the scan through an “Options” feature. This faux-disable will unlock your desktop, but it will not stop the scan. Instead, the supposed scan will continue to run in the background, with constant pop-up reminders that your computer is infected, all aimed at persuading you to purchase the full version of GuardSoftware, by entering your credit card information into a screen like this: GuardSoftware is one of the first rogue programs to utilize such screen locking, which in the past has typically only been observed in ransomware. In the past, Protector Rogues would instead just scare users with frightening messages, such as YOUR COMPUTER IS INFECTED or PROTECTOR FOUND 136 VIRUSES ON YOUR COMPUTER!!! It would seem that whoever developed GuardSoftware has realized that most computer users are no longer so gullible, and that a more forceful approach is necessary. This rogue family uses a variety of names, some examples are Windows Expert Console, Windows Cleaning Toolkit and Windows Active Hotspot. Below are some sha1 hashes listed for these variants: FAAB416D4423F08337707D6FC15FA4ACA143D9BE 2966D9B0B7B27C1CA2FA46F93E26E82FBB7FE64C CB8B40EACC05C5D34396D70C9B9C1D931A780517 Our recommendation is to block the program immediately and to identify exactly where GuardSoftware was encountered so that the point of contact can be avoided and that you can warn your friends. If it is anything like its predecessor, it will be around for some time…but it will also eventually be defeated Copied from: blog.emsisoft.com