Patch Tuesday THIS Tuesday

Microsoft has just released an out-of-cycle security patch to address a vulnerability in Windows’ handling of animated cursor [ANI] files that allows hackers to inject malicious code into vulnerable systems. The release is rated ‘Critical’ and has been brought forward from the scheduled ‘Patch Tuesday’ update on 10 April because Microsoft believes there’s an increased risk of attack to its customers.

Those of you running Kaspersky Lab products will be pleased to know that we have been detecting this vulnerability since 30 March. So far we’ve seen 10 new modifications of this exploit represented by more than 60 samples.

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.