Threats Tagged 'gru'

Between late September 2025 and early April 2026, the threat group BlueDelta conducted espionage campaigns targeting government and diplomatic organizations in Romania, Spain, and Türkiye. They deployed HOOKEDGE, a lightweight Windows batch-script backdoor, via macro-enabled Word documents with diplomatic-themed lures. HOOKEDGE shares code and tradecraft overlap with the HEADLACE backdoor and abuses legitimate webhook services for command-and-control, payload staging, and data exfiltration. The implant was continuously refined to evade sandbox detection and adapt to webhook service constraints. BlueDelta used a tiered operational model, deploying second-stage payloads with shorter beaconing intervals for high-value targets while preserving initial access infrastructure.

MediumMalwareRomaniaSpainTurkey#apt28#headlace#diplomatic targeting

Between June 2024 and April 2025, a sustained credential-harvesting campaign targeting UKR.NET users was identified, attributed to the Russian state-sponsored threat group BlueDelta. The group deployed multiple credential-harvesting pages themed as UKR.NET login portals, leveraging free web services and proxy tunneling platforms to collect user credentials. BlueDelta distributed PDF lures with embedded links to evade detection. The campaign demonstrates the group's adaptability and persistent focus on Ukrainian user credentials for intelligence purposes. Infrastructure changes, including the transition to ngrok and Serveo, reflect responses to takedown efforts. The activity highlights the GRU's continued interest in compromising Ukrainian credentials amid ongoing conflict.

MediumCampaignUkrainePolandGermany+3#phishing#ukrainian targets#ngrok