Tag: malware
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OpenAI API moonlights as malware HQ in Microsoft’s latest discovery
Redmond uncovers SesameOp, a backdoor hiding its tracks by using OpenAI’s Assistants API as a command channel First seen on theregister.com Jump to article: www.theregister.com/2025/11/04/openai_api_moonlights_as_malware/
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Operation SkyCloak Deploys Tor-Enabled OpenSSH Backdoor Targeting Defense Sectors
Threat actors are leveraging weaponized attachments distributed via phishing emails to deliver malware likely targeting the defense sector in Russia and Belarus.According to multiple reports from Cyble and Seqrite Labs, the campaign is designed to deploy a persistent backdoor on compromised hosts that uses OpenSSH in conjunction with a customized Tor hidden service that employs…
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Operation SkyCloak Deploys Tor-Enabled OpenSSH Backdoor Targeting Defense Sectors
Threat actors are leveraging weaponized attachments distributed via phishing emails to deliver malware likely targeting the defense sector in Russia and Belarus.According to multiple reports from Cyble and Seqrite Labs, the campaign is designed to deploy a persistent backdoor on compromised hosts that uses OpenSSH in conjunction with a customized Tor hidden service that employs…
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OpenAI API moonlights as malware HQ in Microsoft’s latest discovery
Redmond uncovers SesameOp, a backdoor hiding its tracks by using OpenAI’s Assistants API as a command channel First seen on theregister.com Jump to article: www.theregister.com/2025/11/04/openai_api_moonlights_as_malware/
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OpenAI API moonlights as malware HQ in Microsoft’s latest discovery
Redmond uncovers SesameOp, a backdoor hiding its tracks by using OpenAI’s Assistants API as a command channel First seen on theregister.com Jump to article: www.theregister.com/2025/11/04/openai_api_moonlights_as_malware/
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Anatomy of Tycoon 2FA Phishing: Tactics Targeting M365 and Gmail
The Tycoon 2FA phishing kit represents one of the most sophisticated threats targeting enterprise environments today. This Phishing-as-a-Service (PhaaS) platform, which emerged in August 2023, has become a formidable adversary against organizational security, employing advanced evasion techniques and adversary-in-the-middle (AiTM) strategies to bypass multi-factor authentication protections. According to the Any.run malware trends tracker, Tycoon 2FA…
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RondoDox Botnet Swells Its Arsenal, 650% Jump in Enterprise-Focused Exploits
The cybersecurity threat landscape shifted dramatically on October 30, 2025, when security researchers monitoring honeypot infrastructure detected a significantly evolved variant of the RondoDox botnet. The updated malware now features 75 distinct exploitation vectors, a fundamental expansion that transforms the threat from a primarily IoT-focused botnet into a multifaceted enterprise threat capable of targeting everything…
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RondoDox Botnet Swells Its Arsenal, 650% Jump in Enterprise-Focused Exploits
The cybersecurity threat landscape shifted dramatically on October 30, 2025, when security researchers monitoring honeypot infrastructure detected a significantly evolved variant of the RondoDox botnet. The updated malware now features 75 distinct exploitation vectors, a fundamental expansion that transforms the threat from a primarily IoT-focused botnet into a multifaceted enterprise threat capable of targeting everything…
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Die Gefahr lauert in der KI: Verbreitung kompromittierter Sprachmodelle
Das massenhafte Ausrollen von Software ist ein Problem, wenn diese bereits im Auslieferungszustand oder in einem Update kompromittiert ist. Damit erhalten unter Umständen Hunderttausende von Unternehmen eine Software mit Schwachstellen oder gar eingepflanzter Malware, die von Cyberkriminellen ausgenutzt wird. Ähnlich verhält es sich mit der Nutzung von künstlicher Intelligenz (KI) beziehungsweise mit großen Sprachmodellen (LLMs).…
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Ransomware-Bande missbraucht Microsoft-Zertifikate
Kontinuierlich offenstehende Hintertüren sind für Cyberkriminelle ein Freifahrtschein.Die Ransomware-Bande Rhysida ist speziell im Unternehmensumfeld berüchtigt. Nun scheint das kriminelle Hacker-Kollektiv neue Wege einschlagen zu wollen, wie ein Bericht des US-Sicherheitsanbieters Expel nahelegt. Demnach setzen die Cyberkriminellen in ihrer aktuellen Angriffskampagne initial auf Malvertising. Die maliziösen Anzeigen laufen über die Microsoft-Suchmaschine Bing und führen auf Fake-Download-Seiten…
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Ransomware-Bande missbraucht Microsoft-Zertifikate
Kontinuierlich offenstehende Hintertüren sind für Cyberkriminelle ein Freifahrtschein.Die Ransomware-Bande Rhysida ist speziell im Unternehmensumfeld berüchtigt. Nun scheint das kriminelle Hacker-Kollektiv neue Wege einschlagen zu wollen, wie ein Bericht des US-Sicherheitsanbieters Expel nahelegt. Demnach setzen die Cyberkriminellen in ihrer aktuellen Angriffskampagne initial auf Malvertising. Die maliziösen Anzeigen laufen über die Microsoft-Suchmaschine Bing und führen auf Fake-Download-Seiten…
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Ransomware-Bande missbraucht Microsoft-Zertifikate
Kontinuierlich offenstehende Hintertüren sind für Cyberkriminelle ein Freifahrtschein.Die Ransomware-Bande Rhysida ist speziell im Unternehmensumfeld berüchtigt. Nun scheint das kriminelle Hacker-Kollektiv neue Wege einschlagen zu wollen, wie ein Bericht des US-Sicherheitsanbieters Expel nahelegt. Demnach setzen die Cyberkriminellen in ihrer aktuellen Angriffskampagne initial auf Malvertising. Die maliziösen Anzeigen laufen über die Microsoft-Suchmaschine Bing und führen auf Fake-Download-Seiten…
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‘SleepyDuck’ Malware in Open VSX Lets Attackers Remotely Control Windows PCs
Security researchers have identified a dangerous remote access trojan called SleepyDuck lurking in the Open VSX IDE extension marketplace, targeting developers who use code editors like Cursor and Windsurf. The malicious extension masqueraded as a legitimate Solidity programming language helper, squatting on the name of an established extension to evade detection. The compromised extension juan-bianco.solidity-vlang…
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Malicious PuTTY Ads Deliver OysterLoader, Allowing Attackers Full Device and Network Access
The Rhysida ransomware gang has been running a sophisticated malvertising campaign that delivers OysterLoader malware through deceptive search engine advertisements, giving attackers complete access to compromised devices and networks. The Rhysida gang, formerly known as Vice Society before rebranding in 2023, has perfected a dangerous infection chain using paid Bing search advertisements. The gang purchases…
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Malicious PuTTY Ads Deliver OysterLoader, Allowing Attackers Full Device and Network Access
The Rhysida ransomware gang has been running a sophisticated malvertising campaign that delivers OysterLoader malware through deceptive search engine advertisements, giving attackers complete access to compromised devices and networks. The Rhysida gang, formerly known as Vice Society before rebranding in 2023, has perfected a dangerous infection chain using paid Bing search advertisements. The gang purchases…
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SesameOp: Using the OpenAI Assistants API for Covert C2 Communication
Microsoft’s Detection and Response Team has exposed a sophisticated backdoor malware that exploits the OpenAI Assistants API as an unconventional command-and-control communication channel. Named SesameOp, this threat demonstrates how adversaries are rapidly adapting to leverage legitimate cloud services for malicious purposes, making detection significantly more challenging for security teams. The discovery highlights the evolving tactics…
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Hacker jagen unvorsichtige Gamer (in Minecraft)
Einige Minecraft-“Hacks” helfen nicht beim Aufbau von Welten – sie zerstören sie. Hier erfahren Sie, wie sich Malware als Minecraft-Mod tarnen kann. First seen on welivesecurity.com Jump to article: www.welivesecurity.com/de/tipps-ratgeber/hacker-jagen-unvorsichtige-gamer-in-minecraft/
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Hacker jagen unvorsichtige Gamer (in Minecraft)
Einige Minecraft-“Hacks” helfen nicht beim Aufbau von Welten – sie zerstören sie. Hier erfahren Sie, wie sich Malware als Minecraft-Mod tarnen kann. First seen on welivesecurity.com Jump to article: www.welivesecurity.com/de/tipps-ratgeber/hacker-jagen-unvorsichtige-gamer-in-minecraft/
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Vom primitiven Krypto-Diebstahl zum raffinierten KI-basierten Betrug
Malware-Betreiber arbeiten mit verdeckten nordkoreanischen IT-Mitarbeitern zusammen. Ihr Ziel: Recruiter und Programmierer First seen on welivesecurity.com Jump to article: www.welivesecurity.com/de/eset-research/vom-primitiven-krypto-diebstahl-zum-raffinierten-ki-basierten-betrug/
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Android Malware Mutes Alerts, Drains Crypto Wallets
Android/BankBot-YNRK is currently targeting users in Indonesia by masquerading as legitimate applications. First seen on darkreading.com Jump to article: www.darkreading.com/vulnerabilities-threats/android-malware-mutes-alerts-drains-crypto-wallets
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SesameOp malware abuses OpenAI Assistants API in attacks
Microsoft security researchers have discovered a new backdoor malware that uses the OpenAI Assistants API as a covert command-and-control channel. First seen on bleepingcomputer.com Jump to article: www.bleepingcomputer.com/news/security/microsoft-sesameop-malware-abuses-openai-assistants-api-in-attacks/
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SesameOp malware abuses OpenAI Assistants API in attacks
Microsoft security researchers have discovered a new backdoor malware that uses the OpenAI Assistants API as a covert command-and-control channel. First seen on bleepingcomputer.com Jump to article: www.bleepingcomputer.com/news/security/microsoft-sesameop-malware-abuses-openai-assistants-api-in-attacks/
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Airstalk Malware Turns MDM Tools into Covert Spy Channels
Airstalk discovery reveals nation-state hackers exploiting trusted tools to infiltrate supply chains undetected. First seen on esecurityplanet.com Jump to article: www.esecurityplanet.com/threats/airstalk-malware-turns-mdm-tools-into-covert-spy-channels/
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Airstalk Malware Turns MDM Tools into Covert Spy Channels
Airstalk discovery reveals nation-state hackers exploiting trusted tools to infiltrate supply chains undetected. First seen on esecurityplanet.com Jump to article: www.esecurityplanet.com/threats/airstalk-malware-turns-mdm-tools-into-covert-spy-channels/
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Rhysida ransomware exploits Microsoft certificate to slip malware past defenses
Identifying forensic signals: The campaigns that leverage trusted certificates undermine the trust model enterprises rely on. Signed malware bypasses app-allow lists, browser warnings, OS checks, and antivirus assumptions about signed code. When the file poses as Teams or PuTTY, employees don’t hesitate to download it as it looks normal.”Once inside, the malware runs with fewer…
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Rhysida ransomware exploits Microsoft certificate to slip malware past defenses
Identifying forensic signals: The campaigns that leverage trusted certificates undermine the trust model enterprises rely on. Signed malware bypasses app-allow lists, browser warnings, OS checks, and antivirus assumptions about signed code. When the file poses as Teams or PuTTY, employees don’t hesitate to download it as it looks normal.”Once inside, the malware runs with fewer…
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Rhysida ransomware exploits Microsoft certificate to slip malware past defenses
Identifying forensic signals: The campaigns that leverage trusted certificates undermine the trust model enterprises rely on. Signed malware bypasses app-allow lists, browser warnings, OS checks, and antivirus assumptions about signed code. When the file poses as Teams or PuTTY, employees don’t hesitate to download it as it looks normal.”Once inside, the malware runs with fewer…