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OFAC Sanctions Action Notice

Favicon for www.regulations.gov Regs.gov: Office of Foreign Assets Control
Published February 24th, 2026
Detected March 14th, 2026
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Summary

The U.S. Department of the Treasury's Office of Foreign Assets Control (OFAC) has added individuals and an entity to the Specially Designated Nationals and Blocked Persons List (SDN List). These designations block all property and interests in property subject to U.S. jurisdiction and prohibit U.S. persons from engaging in transactions with them.

What changed

The U.S. Department of the Treasury's Office of Foreign Assets Control (OFAC) has issued a notice announcing the designation of Oleg Vyacheslavovich Kucherov, Azizjon Makhmudovich Mamashoyev, and Advance Security Solutions to the Specially Designated Nationals and Blocked Persons (SDN) List. These designations are based on determinations that the listed parties materially assisted, sponsored, or provided support to Sergey Sergeyevich Zelenyuk, who is also subject to sanctions. The action blocks all property and interests in property subject to U.S. jurisdiction belonging to these newly designated parties.

U.S. persons are generally prohibited from engaging in transactions with the designated individuals and entities. Compliance officers must review their internal systems to ensure no transactions or dealings occur with these parties. This action carries significant legal and financial consequences for non-compliance, including potential civil penalties. Companies should update their sanctions screening lists immediately to reflect these additions.

What to do next

  1. Review internal compliance systems to identify and block any dealings with the newly designated individuals and entities.
  2. Update sanctions screening lists to include Oleg Vyacheslavovich Kucherov, Azizjon Makhmudovich Mamashoyev, and Advance Security Solutions.
  3. Ensure no transactions or property interests are processed for or on behalf of the designated parties.

Penalties

All property and interests in property subject to U.S. jurisdiction of these persons are blocked, and U.S. persons are generally prohibited from engaging in transactions with them. Penalties for non-compliance may include civil penalties.

Source document (simplified)

Content

ACTION:

Notice.

SUMMARY:

The U.S. Department of the Treasury's Office of Foreign Assets Control (OFAC) is publishing the names of one or more persons
that have been placed on OFAC's Specially Designated Nationals and Blocked Persons List (SDN List) based on OFAC's determination
that one or more applicable legal criteria were satisfied. All property and interests in property subject to U.S. jurisdiction
of these persons are blocked, and U.S. persons are generally prohibited from engaging in transactions with them.

DATES:

This action was issued on February 24, 2026. See
SUPPLEMENTARY INFORMATION
for relevant dates.

FOR FURTHER INFORMATION CONTACT:

OFAC: Associate Director for Global Targeting, 202-622-2420; Assistant Director for Sanctions Compliance, 202-622-2490 or https://ofac.treasury.gov/contact-ofac.

SUPPLEMENTARY INFORMATION:

Electronic Availability

The SDN List and additional information concerning OFAC sanctions programs are available on OFAC's website: https://ofac.treasury.gov.

Notice of OFAC Action

On February 24, 2026, OFAC determined that the property and interests in property subject to U.S. jurisdiction of the following
persons are blocked under the relevant sanctions authorities listed below.

Individuals

  1. KUCHEROV, Oleg Vyacheslavovich (a.k.a. “GABR”), Samara, Russia; DOB 03 Jun 1973; POB Togliatti, Russia; nationality Russia; Gender Male; Secondary sanctions risk: Ukraine-/Russia-Related Sanctions Regulations, 31 CFR 589.201 (individual) [CAATSA—RUSSIA] CYBER4.

Designated pursuant to section 1(a)(iii)(C) of Executive Order 13694 of April 1, 2015, “Blocking the Property of Certain Persons
Engaging in Significant Malicious Cyber-Enabled Activities,” 80 FR 18077, 3 CFR, 2015 Comp., p. 297, as amended by Executive
Order 13757 of December 28, 2016, “Taking Additional Steps to Address the National Emergency With Respect to Significant Malicious
Cyber-Enabled Activities,” 82 FR 1, 3 CFR, 2016 Comp., p. 659, and as further amended by Executive Order 14144 of January
16, 2025, “Strengthening and Promoting Innovation in the Nation's Cybersecurity,” 90 FR 6755, and Executive Order 14306 of
June 6, 2025, “Sustaining Select Efforts To Strengthen the Nation's Cybersecurity and Amending Executive Order 13694 and Executive
Order 14144,” 90 FR 24723 (E.O. 13694, as further amended), for having materially assisted, sponsored, or provided financial,
material, or technological support for, or goods or services to or in support of, SERGEY SERGEYEVICH ZELENYUK, a person whose
property and interests in property are blocked pursuant to E.O. 13694, as further amended.

  1. MAMASHOYEV, Azizjon Makhmudovich (a.k.a. MAMASHOYEV, Azizjon Maxmudovich), 60 Amir Timur Avenue, Tashkent, Uzbekistan; DOB 20 Feb 1987; nationality Uzbekistan; Gender Male; Secondary sanctions risk: Ukraine-/Russia-Related Sanctions Regulations, 31 CFR 589.201; Passport FA2783585 (Uzbekistan) expires 16 May 2031; National ID No. AD3927969 (Uzbekistan) (individual) [CAATSA—RUSSIA] CYBER4.

Designated pursuant to section 1(a)(iii)(C) of E.O. 13694, as further amended, for having materially assisted, sponsored,
or provided financial, material, or technological support for, or goods or services to or in support of, SERGEY SERGEYEVICH
ZELENYUK, a person whose property and interests in property are blocked pursuant to E.O. 13694, as further amended.

BILLING CODE 4810-AL-P

Entities

  1. ADVANCE SECURITY SOLUTIONS (a.k.a. “ADVANCED SECURITY SOLUTIONS”), R-311-315, Jumeirah Living Marina Gate 3, P.O. Box 121828, Dubai, United Arab Emirates; Tashkent, Uzbekistan; website advance-sec.com; Secondary sanctions risk: Ukraine-/Russia-Related Sanctions Regulations, 31 CFR 589.201; Organization Established Date 2025; Organization Type: Computer programming activities [CAATSA—RUSSIA] CYBER4.

Designated pursuant to section 1(a)(iii)(D) of E.O. 13694, as further amended, for being owned or controlled by, or having
acted or purported to act for or on behalf of, directly or indirectly, AZIZJON MAKHMUDOVICH MAMASHOYEV, a person whose property
and interests in property are blocked pursuant to E.O. 13694, as further amended.

  1. SPECIAL TECHNOLOGY SERVICES LLC FZ, Meydan Grandstand, 6th Floor, Meydan Road, Nad Al Sheba, Dubai, United Arab Emirates;
    Secondary sanctions risk: Ukraine-/Russia-Related Sanctions Regulations, 31 CFR 589.201; Organization Established Date 07
    Dec 2024; Organization Type: Computer programming activities; PAIPA Section 2 Information: BLOCKING OF PROPERTY (entity).
    Sec.2(b)(1)(A)—All property and interests in property of this entity are blocked, and all transactions with this entity are
    prohibited, except for the importation of goods.; alt. PAIPA Section 2 Information: LOANS FROM UNITED STATES FINANCIAL INSTITUTIONS.
    Sec.2(b)(1)(D)—United States financial institutions are prohibited from making loans or providing credits to this entity totaling
    more than $10,000,000 in any 12-month period, subject to the exception set forth in PAIPA Section 2(b)(1)(D).; alt. PAIPA
    Section 2 Information: FOREIGN EXCHANGE.

    Sec.2(b)(1)(H)—Transactions in foreign exchange that are subject to the jurisdiction of the United States and in which this
    entity has any interest are prohibited.; alt. PAIPA Section 2 Information: BANKING TRANSACTIONS. Sec.2(b)(1)(I)—Any transfers
    of credit or payments between financial institutions or by, through, or to any financial institution, to the extent that such
    transfers or payments are subject to the jurisdiction of the United States and involve any interest of this entity, are prohibited.;
    alt. PAIPA Section 2 Information: BAN ON INVESTMENT IN EQUITY OR DEBT OF SANCTIONED PERSON. Sec.2(b)(1)(J)—Any United States
    person is prohibited from investing in or purchasing significant amounts of equity or debt instruments of this entity. [CAATSA—RUSSIA]
    [CYBER4] PAIPA.

Designated pursuant to section 1(a)(iii)(D) of E.O. 13694, as further amended, for being owned or controlled by, or having
acted or purported to act for or on behalf of, directly or indirectly, SERGEY SERGEYEVICH ZELENYUK, a person whose property
and interests in property are blocked pursuant to E.O. 13694, as further amended.

Bradley T. Smith, Director, Office of Foreign Assets Control. [FR Doc. 2026-04217 Filed 3-3-26; 8:45 am] BILLING CODE 4810-AL-C

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Classification

Agency
Various Federal Agencies
Published
February 24th, 2026
Instrument
Notice
Legal weight
Binding
Stage
Final
Change scope
Substantive

Who this affects

Applies to
Importers and exporters Financial advisers Fund managers Investors Public companies
Geographic scope
US-wide

Taxonomy

Primary area
Sanctions
Operational domain
Compliance
Topics
Cybersecurity International Trade

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