PsiXBot Modular Malware Gets New Sextortion, Google DoH Upgrades

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https://www.bleepingcomputer.com/news/security/psixbot-modular-malware-gets-new-sextortion-google-doh-upgrades/

Security researchers discovered a new variant of the PsiXBot modular malware with a new sextortion module and designed to use Google’s DNS over HTTPS (DoH) service to get command and control (C2) IP addresses.
The new PsiXBot version comes with hardcoded C2 domains which get resolved using DNS queries delivered over Google's DoH service, making it possible to hide all the queries behind HTTPS encryption granted by Let's-Encrypt certificates.
The resulting IP addresses are delivered to the infected machines as a JSON blob using Google's JSON API for DNS over HTTPS format instead of the default DNS wire format described by RFC 8484 as discovered by security researcher Daniel Stirnimann.

Read more below:

PsiXBot Modular Malware Gets New Sextortion, Google DoH Upgrades

Security researchers discovered a new variant of the PsiXBot modular malware with a new sextortion module and designed to use Google's DNS over HTTPS (DoH) service to get command and control (C2) domain addresses.

www.bleepingcomputer.com

PsiXBot's Use of Google's DNS over HTTPS Service | Proofpoint US

Discover an analysis of the threat actor PsiXBot's use of Google's DNS over HTTPS Service. Learn more about Proofpoint researchers' findings.

www.proofpoint.com