Security News > 2023 > January > Beware: Hackers now use OneNote attachments to spread malware
Threat actors now use OneNote attachments in phishing emails that infect victims with remote access malware which can be used to install further malware, steal passwords, or even cryptocurrency wallets.
This comes after attackers have been distributing malware in emails using malicious Word and Excel attachments that launch macros to download and install malware for years.
Not to be deterred, threat actors quickly switched to using a new file format in their malicious spam attachments: Microsoft OneNote attachments.
Since mid-December, cybersecurity researchers warned that threat actors had started distributing malicious spam emails containing OneNote attachments.
The attachments look like a file's icon in OneNote, so the threat actors overlay a big 'Double click to view file' bar over the inserted VBS attachments to hide them.
Cybersecurity researcher James confirmed this, telling BleepingComputer that the OneNote attachments he analyzed installed the AsyncRAT and XWorm remote access trojans.
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