Exploits and vulnerabilities in Q1 2026
This report provides statistical data on published vulnerabilities and exploits we researched during Q1 2026. It also includes summary data on the use of C2 frameworks in APT attacks.
Threats
![On April 9, 2026, the website cpuid[.]com, hosting installers for popular system administration software CPU-Z, HWMonitor (HWMonitor Pro) and Perfmonitor 2, was compromised. We observed that starting from approximately April 9, 15:00 UTC, until about April 10, 10:00 UTC, the legitimate download URLs for installers of that software have been replaced with URLS to the following malicious websites:](https://media.kasperskycontenthub.com/wp-content/uploads/sites/43/2026/04/10145014/pingpongsuperman_CPU_is_burning_ultra_detailed_sharp_focus_8k_495f9cb6-fa56-4ea8-ad14-88d8c7c8805a_3-gigapixel-redefine-creative-2x-800x450.jpeg){kind=tracking}
Webinars
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Kaspersky Security Bulletin 2025. Statistics
Kaspersky Security Bulletin contains statistics on various cyberthreats for the period from November 2024 to October 2025, which are based on anonymized data voluntarily provided by Kaspersky users via Kaspersky Security Network (KSN).
Reports
OceanLotus suspected of using PyPI to deliver ZiChatBot malware
Kaspersky researchers uncovered malicious wheel packages in PyPI that targeted both Windows and Linux and contained a dropper delivering malware dubbed ZiChatBot. We attribute this activity to OceanLotus APT.
Silver Fox uses the new ABCDoor backdoor to target organizations in Russia and India
The Silver Fox group is targeting companies in Russia and India by impersonating tax authorities to distribute ValleyRAT and the new ABCDoor backdoor.
HoneyMyte updates CoolClient and deploys multiple stealers in recent campaigns
Kaspersky researchers analyze updated CoolClient backdoor and new tools and scripts used in HoneyMyte (aka Mustang Panda or Bronze President) APT campaigns, including three variants of a browser data stealer.
The HoneyMyte APT evolves with a kernel-mode rootkit and a ToneShell backdoor
Kaspersky discloses a 2025 HoneyMyte (aka Mustang Panda or Bronze President) APT campaign, which uses a kernel-mode rootkit to deliver and protect a ToneShell backdoor.
