The U.S. Department of the Treasury has added Uzbek citizen Azizhon Mamashoev and his company Advance Security Solutions to its sanctions list. This organization is characterized as an exploit broker—tools intended for hacking—and its activities are related to offensive cybersecurity, according to media sources.
Sanctions were imposed by the Office of Foreign Assets Control (OFAC) of the U.S. Department of the Treasury, which announced the inclusion of Mamashoev and his company in the blacklist. This list includes not only his name but also passport details.
Azizhon Mamashoev, born in 1987, is also mentioned in connection with Sergey Zelenyuk. Furthermore, the sanctions also apply to the company Advance Security Solutions itself, registered in 2025 and engaged in programming. The addresses listed in the documents are located in Dubai (UAE) and Tashkent. According to OFAC, the company founded by Mamashoev is involved in offensive cybersecurity.
In an official statement, the agency emphasized that Advance Security Solutions acts as an exploit broker, offering rewards for vulnerabilities in American software. The company was included in the list based on a presidential decree of the United States, as an entity controlled by Mamashoev or acting on his behalf.
In addition, Russian Oleg Vyacheslavovich Kucherov has also been added to the sanctions list, whom OFAC links to the cybercriminal group Trickbot. This group, first discovered in 2016, used modular malware to carry out cyberattacks, including ransomware attacks on government agencies and medical organizations in the U.S.
According to OFAC, Mamashoev and Kucherov previously collaborated with Operation Zero and were included in the sanctions list for providing significant financial, material, or technological support to Sergey Zelenyuk, as well as for acting in his interests.
Inclusion in the SDN List means the blocking of assets within the U.S. and a prohibition for American citizens on any transactions with these individuals.
