KINWILDER

UAC-0226

No sourced public emblem in this profile.

reference profile · reported nexus: Unknown (not nationality)

UAC-0226 is a cyber-espionage group targeting Ukrainian military, law enforcement, and local government entities—particularly near the eastern border—since February 2025. Initial access is achieved via phishing emails containing malicious .xlsm documents that decode and execute base64-encoded payloads stored in spreadsheet cells. Two main tools are used: a .NET-based reverse shell leveraging PowerShell code from a public GitHub repository (https://github.com/tihanyin/PSSW100AVB), and GIFTEDCROOK, a C/C++ stealer that extracts browser data (cookies, history, credentials), archives it with PowerShell, and exfiltrates via Telegram. The group often abuses compromised webmail accounts for delivery, underlining the importance of detailed email and web server logging. Their activity shows a mix of low development overhead and high operational targeting, consistent with state-aligned espionage.

Source-reported aliases: . Associations do not prove equivalence.

Target geography

Catalog-listed countries (associations, not attack counts): No country-level metadata

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Historical casebook

No dated record curated yet; absence does not establish inactivity.

Planned Kinwilder coverage

Tentative editorial review windows, contingent on evidence and review; not promised publication dates or predictions of attacks.

No assigned review window.

References

Pinned source catalog

https://cert.gov.ua/article/6282946

https://socprime.com/blog/detect-uac-0226-attacks-against-ukraine/

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