As part of the sanctions, personal data of Mamashoev was revealed, including his passport details. According to the provided information, he was born in 1987 and is a citizen of Uzbekistan.
The sanctions list also includes the company Advance Security Solutions, associated with Mamashoev. According to OFAC, this enterprise was registered in 2025 in Dubai, UAE, and its addresses include Tashkent.
This company is engaged in offensive cybersecurity and acts as an exploit broker, offering rewards for information on vulnerabilities in software developed in the USA.
In addition to Mamashoev, Russians Oleg Kucherov, Marina Vasanovich, and Sergey Zelinyuk have also been sanctioned. Zelinyuk is suspected of organizing cyberattacks on healthcare institutions and government agencies in the USA using malware. All these individuals, including Mamashoev, provided material or technical assistance to his organization.
It is worth noting that the SDN list is the main blacklist of the U.S. Department of the Treasury, which includes companies and individuals subject to severe restrictions. The assets of those sanctioned are frozen, and American citizens and companies are prohibited from doing any business with them.
In November of last year, it was reported that the company Datavice, registered in Uzbekistan, was added to the list of anti-Russian sanctions, as it is believed by U.S. authorities to be linked to supporting Russian infrastructure and cybercrime.
