Microsoft Spots 'Nodersok' Malware That Turns PCs Into Zombie Proxies

After infecting a PC, Nodersok can turn them into proxies for launching other cyber-attacks.

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Microsoft Spots 'Nodersok' Malware That Turns PCs Into Zombie Proxies

Researchers at Microsoft have uncovered a new malware campaign that is infecting thousands computers across the world.

After infecting a PC, the malware, dubbed Nodersok, can turn them into proxies for launching other cyber attacks.

"The majority of targets are consumers, but about 3 per cent of encounters are observed in organisations in sectors like education, professional services, healthcare, finance, and retail," Microsoft Defender Advanced Threat Protection (ATP) Research team said.

"The campaign is particularly interesting not only because it employs advanced fileless techniques, but also because it relies on an elusive network infrastructure that causes the attack to fly under the radar," the researchers wrote.

The attack begins when a user downloads and runs an HTML application (HTA) file named Player1566444384.hta.

The digits in the file name differ in every attack.

Analysis of Microsoft Defender ATP telemetry pointed to compromised advertisements as the most likely infection vector for delivering the HTA files.

Executing those files kickstart a process that opens up Powershell scripts, Excel and JavaScript to end up downloading and installing the Nodersok malware, The Inquirer reported.

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Further reading: Microsoft, Nodersok
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