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Search: “Internet Information Services”
27 stories
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New pro-Ukraine hacker group targets Russian companies with custom ransomware
F6 links new pro-Ukraine ransomware group VantaCore, likely a Thor rebrand, to seven attacks on Russian firms using custom tooling and multimillion-dollar demands.
Russian cybersecurity firm F6 reports that VantaCore, a ransomware group believed to be a rebrand of pro-Ukrainian group Thor, has targeted at least seven Russian organizations with ransom demands reaching millions of dollars, operating as a ransomware-as-a-service operation with a Tor-based victim chat and a leak site. The group uses custom-built tooling including the VantaCore ransomware that encrypts servers and workstations, VantaCoreLoader for distribution, the VantaCoreRAT backdoor, and SnowKiller, which disables antivirus and security software. Initial access relies on poorly secured VPNs and remote-access tools, flaws in internet-facing applications, and credentials stolen from business partners. F6 notes pro-Ukrainian groups increasingly abandoned stock ransomware like LockBit 3 Black and Babuk in 2025-2026 in favor of custom malware.
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Cyberattack encrypts systems at Bavarian municipal utility
Hackers encrypted the central IT network of Bavarian utility Stadtwerke Landsberg, disrupting office systems but not electricity or water services.
Stadtwerke Landsberg said hackers encrypted its central IT network overnight on Sept. 1, prompting disconnection from the internet, crisis-team activation and external forensic support. Essential electricity and water services were unaffected, but staff availability was limited and customer data such as names, addresses and bank details may have been accessed. No ransomware group was named and no extortion demand was confirmed. The attack follows a similar late-June encryption incident at a North Rhine-Westphalia municipal utility, and the BSI consistently ranks ransomware among Germany's most serious cyber threats.
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