Malware Calendar Wallpaper for May 2011

Here’s the latest of our malware wallpaper calendars.

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One of this month’s highlighted malware incidents is the Morris worm. This worm was released on 2 November 1988 and by the following day was causing major problems for computers on the Internet. This would be nothing out of the ordinary in today’s world. But it certainly was then. The worm quickly infected about 10 per cent of all computers connected to the Internet and, due to a programming error, made them unstable. Of course, in 1988 the Internet was made up of only 6,000 or so computers – it was an esoteric system used almost exclusively by government and academic institutions. So the Internet worm’s time had not yet come. But even so, the Morris worm was one of the first warnings of the importance of applying security patches in a timely fashion.

Kaspersky researchers have discovered new Mirage Kitten attacks using previously undocumented malware families: NodeRabbit in Node.js and PollCat in JavaScript.

Our experts discovered a new CoolClient backdoor variant with a kernel-mode rootkit driver that hides malicious processes, files, and network connections from security tools and threat analysts.

Kaspersky experts break down a new Armored Likho campaign that poses as a fundraising efforts and delivers a new Still Toolkit aimed at stealing Telegram data and eavesdropping on victims.

Kaspersky researchers reveal previously undocumented malware attributed to Mirage Kitten (UNC1549, Smoke Sandstorm, Nimbus Manticore): NightLedger backdoor, ArcBridge, and BridgeHead tunneling tools.