All news with #ransomware tag

🔒 ESET researchers identified HybridPetya, a new ransomware strain that blends Petya-style MFT encryption with a UEFI bootkit that can bypass Secure Boot by abusing a patched flaw (CVE-2024-7344) in the Howyar Reloader EFI component. The malware installs a malicious EFI application, uses a three-state flag to track encryption and ransom status, displays a fake CHKDSK screen, and demands $1,000 in Bitcoin. Select variants load a cloak.dat payload into reloader.efi to evade integrity checks; Microsoft revoked the vulnerable binary via dbx updates. ESET found no evidence of widespread active abuse but warned Secure Boot bypasses are increasingly common and urged prompt patching and boot integrity monitoring.

🛡️ ESET researchers identified HybridPetya in late July 2025 after suspicious samples were uploaded to VirusTotal. The malware resembles Petya/NotPetya and encrypts the NTFS Master File Table (MFT), while also capable of installing a malicious EFI application on the EFI System Partition to persist on UEFI systems. One analyzed variant exploits CVE-2024-7344 using a crafted cloak.dat to bypass UEFI Secure Boot on outdated systems. ESET telemetry shows no evidence of active, widespread deployments.

🚨 The Australian Cyber Security Centre has observed increased exploitation of SonicWall SSL VPNs by the Akira ransomware group, leveraging CVE-2024-40766. The vulnerability, patched over a year ago, affects SonicWall Gen 5 and Gen 6 appliances and Gen 7 devices running SonicOS 7.0.1-5035 and earlier. Organisations remain at risk if they did not both install firmware updates and immediately rotate administrative credentials after migration. Security vendors Rapid7 and Recorded Future report automated intrusions tied to this issue; operators are advised to patch, reset passwords, restrict VPN access and enable robust MFA.

🔒 The Akira ransomware gang is actively exploiting CVE-2024-40766 to target unpatched SonicWall SSL VPN endpoints and gain unauthorized network access. SonicWall released a patch in August 2024 and warned that exposed credentials could allow attackers to configure MFA or TOTP and bypass protections. Administrators should apply the vendor update, rotate local SSLVPN passwords, enforce MFA, mitigate Default Group risks, and restrict Virtual Office Portal access.

🛡️ US Senator Ron Wyden has asked the Federal Trade Commission to investigate Microsoft following the 2024 ransomware attack on healthcare operator Ascension, which exposed data for 5.6 million patients after a contractor clicked a malicious Bing search result. Wyden says default Microsoft settings and support for the outdated RC4 standard enabled a Kerberoasting technique that granted administrative access. He notes Microsoft was warned in July 2024 and posted a blog in October announcing a planned update, but nearly a year later no update has been issued nor direct customer outreach made. The letter frames Microsoft’s control over default configurations as a systemic national security risk.

🔍 Senator Ron Wyden has asked the Federal Trade Commission to investigate Microsoft for what he describes as "gross cybersecurity negligence" that he says facilitated ransomware attacks on U.S. critical infrastructure, including healthcare. Wyden's four-page letter to FTC Chair Andrew Ferguson cites the 2024 Ascension breach attributed to Black Basta and details an attack chain that began when a contractor clicked a malicious link after using Microsoft's Bing search. The senator highlights exploitation of insecure default Kerberos settings and legacy RC4 support enabling Kerberoasting, and criticizes Microsoft for not enforcing stronger defaults and minimum password requirements while noting the company's published mitigations and planned deprecations.

🚨 Senator Ron Wyden has asked the FTC to investigate Microsoft for what he calls "gross cybersecurity negligence," arguing insecure defaults enabled widespread ransomware attacks. He cites the February 2024 Ascension Health breach that exposed 5.6 million patient records and describes how a single click enabled lateral movement via Kerberoasting and lingering RC4 support. Wyden criticizes Microsoft for building a >$20 billion security business of add-on protections while leaving core products vulnerable and says promised fixes and plain-language guidance were inadequate. The letter warns this pattern poses national-security and industry-wide risks.

🚨 A US federal court has unsealed charges against Ukrainian national Volodymyr Viktorovich Tymoshchuk, accused of orchestrating ransomware campaigns using LockerGoga, MegaCortex, and Nefilim. Authorities say these campaigns, active between December 2018 and October 2021, targeted over 250 US companies and hundreds more worldwide. Tymoshchuk — also known by aliases such as 'deadforz', 'Boba', and 'msfv' — remains at large. The US is offering a $10 million reward for information leading to his arrest and conviction.

🔒 A ransomware incident attributed to KillSec has disrupted MedicSolution, a Brazilian healthcare IT vendor, after attackers claimed to exfiltrate more than 34 GB comprising 94,818 files. Resecurity reports the haul includes medical evaluations, lab results, X‑rays and unredacted patient photos, and says data was exposed via misconfigured AWS cloud buckets. MedicSolution has not publicly responded; regulators and affected providers face notification and remediation challenges.

🔒 A newly observed ransomware group, The Gentlemen, has rapidly expanded operations across Asia Pacific, South America, the US and the Middle East since first being identified in August. Trend Micro reports the group leverages legitimate drivers, GPO abuse and custom tooling to disable endpoint security and move laterally. Victims span manufacturing, construction, healthcare and insurance, and defenders are urged to adopt zero-trust, behavioral EDR/XDR and rigorous segmentation.

📉 A new Sophos study finds that ransomware demands and payments in the education sector have dropped dramatically year‑on‑year, with average demands falling 74% for lower education and 80% for higher education. Median payments also plunged, moving education from among the highest to among the lowest payers. Improved detection, faster recovery and more effective negotiation are cited as key drivers behind the reductions.

🔒 Lovesac has informed customers that an unauthorized actor accessed its systems between February 12 and March 3, 2025, copying certain files after the company detected suspicious activity at the end of February. The intrusion aligns with a March claim by RansomHub, which said it had stolen roughly 40 GB of data; the ransomware group's extortion portal later went offline in April. Lovesac says it has found no confirmed misuse of the stolen information, but is notifying affected customers, offering 24 months of complimentary credit monitoring through Experian (enrollment required and open until November 28, 2025), and urging vigilance for signs of identity theft and fraud.

🛡️ The U.S. Department of Justice has indicted Ukrainian national Volodymyr Tymoshchuk for allegedly administering the LockerGoga, MegaCortex, and Nefilim ransomware operations that targeted hundreds of companies worldwide. The superseding indictment covers activity between 2019 and 2021 and alleges coordination with affiliates and profit-sharing arrangements. Tymoshchuk faces multiple computer fraud and damaging-computer charges, and the State Department is offering up to $11 million for information leading to his arrest.

🛡️ NYU researchers built a proof-of-concept LLM that can be embedded in a binary to synthesize and execute ransomware payloads dynamically, performing reconnaissance, generating polymorphic code and coordinating extortion with minimal human input. ESET detected traces and initially called it the first AI-powered ransomware before clarifying it was a lab prototype rather than an in-the-wild campaign. Experts including IST's Taylor Grossman say the work was predictable but remains controllable today. They advise reinforcing CIS and NIST controls and prioritizing basic cyber hygiene to mitigate such threats.

🔒 Cisco Talos finds abuses of remote access software and services are the most common pre-ransomware indicator, with threat actors leveraging legitimate tools such as RDP, PsExec, PowerShell and remote-support apps like AnyDesk and Microsoft Quick Assist. The report highlights credential dumping (for example, Mimikatz) and network discovery as other frequent TTPs. It recommends rapid response, MFA, application allowlisting and enhanced endpoint monitoring to limit ransomware execution.

🔒Cisco Talos Incident Response (Talos IR) analyzed pre-ransomware engagements from January 2023 through June 2025 to determine which controls most often prevented ransomware deployment. Rapid engagement with incident responders and near-immediate action on EDR/MDR alerts were the two strongest correlates of stopping encryption. Talos found that aggressive blocking and quarantine settings, strict identity and privilege controls, improved logging, and early notifications from partners materially increased the chance of eviction before encryption. The guidance focuses on securing remote services, credential protection, application allowlisting, and network segmentation.

🔒 In 2024 and into 2025, a wide range of German companies — from small and mid-sized enterprises to publicly listed groups and critical-service providers — were struck by ransomware and other intrusions, causing operational disruptions, lost revenue, supply-chain effects and reputational harm. Notable victims include Volkswagen Group, Adidas, Samsung Germany and several defence and manufacturing firms, while IT service providers and regional utilities were also targeted. At least one company (Fasana GmbH) reported insolvency after an attack. The editorial team updates this list regularly, but it is not exhaustive.

🚗 A recent survey of 200 German automotive cybersecurity experts and IT decision-makers shows 75% of companies rate the threat from cyberattacks as high or very high. Respondents identified cloud security gaps (19.5%) and ransomware/malware (19%) as the leading concerns, while data breaches (16.5%), AI-based attack scenarios (14.5%) and connected-vehicle vulnerabilities (14%) followed. Fewer than half of firms (47%) express confidence in their defenses, and many plan investments in threat detection, AI-driven analytics and security training.

⚠️ Anthropic reports that a threat actor used Claude Code to automate reconnaissance, credential harvesting, network intrusion, and targeted extortion across at least 17 organizations, including healthcare, emergency services, government, and religious institutions. The actor prioritized public exposure over classic ransomware encryption, demanding ransoms that in some cases exceeded $500,000. Anthropic also identified North Korean use of Claude for remote‑worker fraud and an actor who used the model to design and distribute multiple ransomware variants with advanced evasion and anti‑recovery features.

🩺 Cobalt's State of Pentesting in Healthcare 2025 report shows healthcare organizations take far longer than peers to remediate serious vulnerabilities, leaving systems and patient data exposed. The firm, using a decade of internal pentest data and a survey of 500 US security leaders, found only 57% of serious findings are fixed and the median time to resolve is 58 days, with a 244-day half-life for serious issues. While business-critical assets often see fixes within days, Cobalt warns that prioritizing SLA-bound remediation lets other serious but non-critical flaws linger and accrue security debt, increasing ransomware and data-exfiltration risk.