APT28 Deploys PRISMEX Malware in Campaign Targeting Ukraine and NATO Allies

The Russian threat actor known as APT28 aka Forest Blizzard and Pawn Storm has been linked to a fresh spear-phishing campaign targeting Ukraine and its allies to deploy a previously undocumented malware suite codenamed PRISMEX. "PRISMEX combines advanced steganography, component object model COM...

DRILLAPP Backdoor Targets Ukraine, Abuses Microsoft Edge Debugging for Stealth Espionage

Ukrainian entities have emerged as the target of a new campaign likely orchestrated by threat actors linked to Russia, according to a report from S2 Grupo's LAB52 threat intelligence team. The campaign, observed in February 2026, has been assessed to share overlaps with a prior campaign mounted b...

Russia-Aligned Hackers Abuse Viber to Target Ukrainian Military and Government

The Russia-aligned threat actor known as UAC-0184 has been observed targeting Ukrainian military and government entities by leveraging the Viber messaging platform to deliver malicious ZIP archives. "This organization has continued to conduct high-intensity intelligence gathering activities again...

Russian Hackers Gamaredon and Turla Collaborate to Deploy Kazuar Backdoor in Ukraine

Cybersecurity researchers have discerned evidence of two Russian hacking groups Gamaredon and Turla collaborating together to target and co-comprise Ukrainian entities. Slovak cybersecurity company ESET said it observed the Gamaredon tools PteroGraphin and PteroOdd being used to execute Turla...

APT28 Uses Signal Chat to Deploy BEARDSHELL Malware and COVENANT in Ukraine

The Computer Emergency Response Team of Ukraine CERT-UA has warned of a new cyber attack campaign by the Russia-linked APT28 aka UAC-0001 threat actors using Signal chat messages to deliver two previously undocumented malware families dubbedd BEARDSHELL and COVENANT. BEARDSHELL, per CERT-UA, is...

Microsoft Warns of New Russian State-Sponsored Hacker Group with Destructive Intent

Microsoft on Wednesday took the lid off a "novel and distinct Russian threat actor," which it said is linked to the General Staff Main Intelligence Directorate GRU and has a "relatively low success rate." The tech giant's Threat Intelligence team, which was previously tracking the group under its...

Russian Hackers Using Graphiron Malware to Steal Data from Ukraine

A Russia-linked threat actor has been observed deploying a new information-stealing malware in cyber attacks targeting Ukraine. Dubbed Graphiron by Broadcom-owned Symantec, the malware is the handiwork of an espionage group known as Nodaria , which is tracked by the Computer Emergency Response Te...

Russian Turla Hackers Hijack Decade-Old Malware Infrastructure to Deploy New Backdoors

The Russian cyberespionage group known as Turla has been observed piggybacking on attack infrastructure used by a decade-old malware to deliver its own reconnaissance and backdoor tools to targets in Ukraine. Google-owned Mandiant, which is tracking the operation under the uncategorized cluster...