---
id: 6193
title: "Operation Roundish: Uncovering an APT28 Roundcube Exploitation Toolkit Targeting Ukraine"
source_domain: hunt.io
source_url: "https://hunt.io/blog/operation-roundish-apt28-roundcube-exploitation"
published_at: "2026-03-11T00:00:00Z"
tags: ["ai-security", "threat-intelligence", "malware", "xss", "phishing", "apt", "roundcube", "ukraine", "apt28", "hunt-io"]
phying_url: "https://phying.com/item/6193"
lang: en
---

# Operation Roundish: Uncovering an APT28 Roundcube Exploitation Toolkit Targeting Ukraine

## Summary

Hunt.io uncovered a full APT28 Roundcube exploitation toolkit in an exposed directory: XSS payloads, a Flask C2, CSS-injection tooling and a Go implant targeting Ukrainian government webmail.

## Intelligence Metadata

- **Sources:** hunt.io
- **Published:** 2026-03-11T00:00:00Z
- **Original:** https://hunt.io/blog/operation-roundish-apt28-roundcube-exploitation
- **Phying News:** https://phying.com/item/6193