Leonid Bezvershenko
Security Researcher, GReAT
Leonid joined Kaspersky in 2020 as an intern in the Global Research and Analysis Team (GReAT). In 2021, he was invited to the GReAT as a Junior Security Researcher. In 2023, he was promoted to Security Researcher. In this role, Leonid focuses on open‑source security, reverse engineering and malware analysis. His research includes the analysis of APT campaigns, such as Operation Triangulation and CloudWizard. Additionally, he is actively involved in the development of internal tools and infrastructure. Leonid is currently enrolled in Lomonosov Moscow State University and studies Fundamental Informatics and Information Technology.Publications
Reports
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.
Evasive Panda APT poisons DNS requests to deliver MgBot
Kaspersky GReAT experts analyze the Evasive Panda APT’s infection chain, including shellcode encrypted with DPAPI and RC5, as well as the MgBot implant.
