Since the public release of MS12-020 bulletin, there have been plenty of attempts to exploit the Remote Desktop Protocol (RDP) vulnerabilities. Last week, we received a related sample, which turned out to be a tool called ‘RDPKill by: Mark DePalma’ that was designed to kill targeted RDP service.
The tool was written with Visual Basic 6.0, and uses a simple user interface. We tested it on machines running on Windows XP 32-bit and Windows 7 64-bit.
Both of the Windows XP 32-bit and Windows 7 64-bit machines were affected by the Denial of Service (DoS) attack. The service crashed and triggered the Blue Screen of Death (BSoD) condition.
We detect this tool as Hack-Tool:W32/RDPKill.A. (SHA-1: 1d131a5f17d86c712988a2d146dc73367f5e5917).
Besides RDPKill.A, other similar tools and metasploit module can also be found online. Due to their availability, unpatched RDP server would be an easy target of DoS attack by attackers who might be experimenting with these tools.
For those who haven’t patched their system, especially those running RDP service on their machines, we strongly advise you to do so as soon as possible.
Blog post by – Azlan and Yeh
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