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Securityaffairs.Co •Pierluigi Paganini • November 7, 2025

Russia-linked group InedibleOchotense used fake ESET installers in phishing attacks on Ukrainian targets in May 2025. Russia-linked group InedibleOchotense used trojanized ESET installers in phishing attacks against Ukrainian entities detected in May 2025. The campaign used emails and Signal messages to deliver trojanized ESET installers that installed both legitimate software and the Kalambur backdoor. “Another […]

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Russia-Linked Group Targets Ukraine with Phishing Campaign Using Trojanized Software In May 2025, the Russia-linked group InedibleOchotense conducted phishing attacks targeting Ukrainian entities by distributing trojanized ESET installers. These installers not only included legitimate software but also deployed the Kalambur backdoor, indicating a sophisticated approach to cyber espionage and disruption. 2 sources 40

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