Tag: antivirus
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EndClient RAT Leverages Compromised Code-Signing to Slip Past Antivirus
A sophisticated Remote Access Trojan (RAT) is actively targeting North Korean Human Rights Defenders (HRDs) through a campaign leveraging stolen code-signing certificates to evade antivirus detection. The newly discovered >>EndClient RAT,>StressClear.msi,
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EndClient RAT Leverages Compromised Code-Signing to Slip Past Antivirus
A sophisticated Remote Access Trojan (RAT) is actively targeting North Korean Human Rights Defenders (HRDs) through a campaign leveraging stolen code-signing certificates to evade antivirus detection. The newly discovered >>EndClient RAT,>StressClear.msi,
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New backdoor ‘SesameOp’ abuses OpenAI Assistants API for stealthy C2 operations
Lessons for defenders and platform providers: Microsoft clarified that OpenAI’s platform itself wasn’t breached or exploited; rather, its legitimate API functions were misused as a relay channel, highlighting a growing risk as generative AI becomes part of enterprise and development workflows. Attackers can now co-opt public AI endpoints to mask malicious intent, making detection significantly…
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New backdoor ‘SesameOp’ abuses OpenAI Assistants API for stealthy C2 operations
Lessons for defenders and platform providers: Microsoft clarified that OpenAI’s platform itself wasn’t breached or exploited; rather, its legitimate API functions were misused as a relay channel, highlighting a growing risk as generative AI becomes part of enterprise and development workflows. Attackers can now co-opt public AI endpoints to mask malicious intent, making detection significantly…
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New backdoor ‘SesameOp’ abuses OpenAI Assistants API for stealthy C2 operations
Lessons for defenders and platform providers: Microsoft clarified that OpenAI’s platform itself wasn’t breached or exploited; rather, its legitimate API functions were misused as a relay channel, highlighting a growing risk as generative AI becomes part of enterprise and development workflows. Attackers can now co-opt public AI endpoints to mask malicious intent, making detection significantly…
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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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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…
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Black Friday Cloud-Speicher-Angebot von Internxt: Lebenslanger Cloud-Speicher, VPN, Antivirus und mehr!
Der Black Friday ist einmal im Jahr eine einmalige Gelegenheit für ein Schnäppchen. Den Cloud-Anbieter Internxt gibt es zum Sionderpreis! First seen on tarnkappe.info Jump to article: tarnkappe.info/advertorial/black-friday-cloud-speicher-angebot-von-internxt-lebenslanger-cloud-speicher-vpn-antivirus-und-mehr-322408.html
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Black Friday Cloud-Speicher-Angebot von Internxt: Lebenslanger Cloud-Speicher, VPN, Antivirus und mehr!
Der Black Friday ist einmal im Jahr eine einmalige Gelegenheit für ein Schnäppchen. Den Cloud-Anbieter Internxt gibt es zum Sionderpreis! First seen on tarnkappe.info Jump to article: tarnkappe.info/advertorial/black-friday-cloud-speicher-angebot-von-internxt-lebenslanger-cloud-speicher-vpn-antivirus-und-mehr-322408.html
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Black Friday Cloud-Speicher-Angebot von Internxt: Lebenslanger Cloud-Speicher, VPN, Antivirus und mehr!
Der Black Friday ist einmal im Jahr eine einmalige Gelegenheit für ein Schnäppchen. Den Cloud-Anbieter Internxt gibt es zum Sionderpreis! First seen on tarnkappe.info Jump to article: tarnkappe.info/advertorial/black-friday-cloud-speicher-angebot-von-internxt-lebenslanger-cloud-speicher-vpn-antivirus-und-mehr-322408.html
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Cyber agencies produce ‘long overdue’ best practices for securing Microsoft Exchange Server
The guidance: The guidance states admins should treat on-prem Exchange servers as being “under imminent threat,” and itemizes key practices for admins:First, it notes, “the most effective defense against exploitation is ensuring all Exchange servers are running the latest version and Cumulative Update (CU)”;It points out that Microsoft Exchange Server Subscription Edition (SE) is the…
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Cyber agencies produce ‘long overdue’ best practices for securing Microsoft Exchange Server
The guidance: The guidance states admins should treat on-prem Exchange servers as being “under imminent threat,” and itemizes key practices for admins:First, it notes, “the most effective defense against exploitation is ensuring all Exchange servers are running the latest version and Cumulative Update (CU)”;It points out that Microsoft Exchange Server Subscription Edition (SE) is the…
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Microsoft stoppt Ransomware-Angriffe auf Teams-Nutzer
Eine Ransomware-Bande hat gefälschte MS Teams-Installationsprogramme verwendet, um Nutzer anzugreifen.Durch die zunehmende Verbreitung von Remote-Work geraten Collaboration-Tools immer wieder in das Visier von Cyberkriminellen. Microsoft entdeckte vor kurzem eine Angriffskampagne der Ransomware-Bande Vanilla Tempest, die auf gefälschten Teams-Installationsprogrammen basiert. Die Angreifer verwendeten dazu imitierte MSTeamsSetup.exe-Dateien, die auf bösartigen Domains gehostet wurden. Ziel war es, ahnungslose…
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GhostBat RAT Android Malware Poses as Fake RTO Apps to Steal Banking Data from Indian Users
The GhostBat RAT campaign leverages diverse infection vectors”, WhatsApp, SMS with shortened URLs, GitHub-hosted APKs, and compromised websites”, to distribute malicious Android droppers. Once installed, these droppers employ multi-stage workflows, deliberate ZIP header manipulation, and heavy string obfuscation to evade antivirus detection and reverse”engineering. The threat actors utilize native libraries (.so) to dynamically resolve API…
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GhostBat RAT Android Malware Poses as Fake RTO Apps to Steal Banking Data from Indian Users
The GhostBat RAT campaign leverages diverse infection vectors”, WhatsApp, SMS with shortened URLs, GitHub-hosted APKs, and compromised websites”, to distribute malicious Android droppers. Once installed, these droppers employ multi-stage workflows, deliberate ZIP header manipulation, and heavy string obfuscation to evade antivirus detection and reverse”engineering. The threat actors utilize native libraries (.so) to dynamically resolve API…
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EDR-Freeze: Technical Mechanics and Forensic Artifacts Exposed
EDR-Freezeis a proof-of-concept tool that forces endpoint detection and response (EDR) or antivirus processes into a temporary “coma.” Instead of installing a vulnerable driver, it leverages legitimate Windows Error Reporting components, specifically WerFaultSecure.exe and the MiniDumpWriteDump API to pause security processes from user mode. By racing threads at just the right moment, EDR-Freeze suspends all…
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EDR-Freeze: Technical Mechanics and Forensic Artifacts Exposed
EDR-Freezeis a proof-of-concept tool that forces endpoint detection and response (EDR) or antivirus processes into a temporary “coma.” Instead of installing a vulnerable driver, it leverages legitimate Windows Error Reporting components, specifically WerFaultSecure.exe and the MiniDumpWriteDump API to pause security processes from user mode. By racing threads at just the right moment, EDR-Freeze suspends all…
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New QR Code-Based Quishing Attack Targets Microsoft Users
A sophisticated quishing campaign leveraging weaponized QR codes has been uncovered, specifically targeting Microsoft users with seemingly innocuous document review requests. By exploiting advanced evasion techniques”, splitting the QR code into two separate images, using non-standard color palettes, and drawing the code directly via PDF content streams”, attackers are able to bypass traditional antivirus and…
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New ‘Fully Undetectable’ Android RAT Discovered on GitHub
Hosted at the repository “Huckel789/Android-RAT,” this fully undetectable (FUD) RAT is designed to evade antivirus detection permanently, maintain persistence in battery-optimized environments, and deliver a feature-rich command-and-control (C2C) experience entirely from a web interface. This Android RAT sets itself apart by eliminating the traditional requirement for a desktop or laptop in the attack chain. A…
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Asgard Malware Protector Reversed: Researchers Expose Its Antivirus Bypass Methods
SpyCloud Labs analysts have successfully reverse-engineered Asgard Protector, a sophisticated crypter tool prominently used to hide malicious payloads from antivirus detection systems. This crypter has gained particular notoriety for being the preferred choice among sellers of LummaC2, currently the most prevalent commodity infostealer in the cyberthreat landscape. The analysis reveals intricate evasion techniques that demonstrate the evolving…
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Chinese APT group Phantom Taurus targets gov and telecom organizations
mssq.bat that connects to an SQL database using the sa (system administrator) ID with a password previously obtained by the attackers. It then performs a dynamic search for specific keywords specified in the script, saving the results as a CSV file.”The threat actor used this method to search for documents of interest and information related…
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6 Best Enterprise Antivirus Software Choices
We reviewed the leading enterprise antivirus and EDR tools and found SentinelOne Singularity to be the best overall, followed closely by Microsoft Defender and CrowdStrike Falcon. The post 6 Best Enterprise Antivirus Software Choices appeared first on TechRepublic. First seen on techrepublic.com Jump to article: www.techrepublic.com/article/best-antivirus-software/
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New ModStealer Evades Antivirus, Targets macOS Users to Steal Sensitive Data
A sophisticated new malware strain targeting macOS users has emerged, capable of bypassing traditional antivirus solutions while specifically targeting developers and cryptocurrency holders. The cross-platform threat, dubbed ModStealer, represents the latest evolution in macOS-focused cybercrime, highlighting the growing security challenges facing Apple users in 2024. ModStealer was first identified by cybersecurity firm Mosyle and reported through…
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Agentic AI der neue Horror für Sicherheitsentscheider?
Tags: ai, antivirus, api, breach, ciso, compliance, cyberattack, cybersecurity, cyersecurity, detection, governance, law, mail, malware, monitoring, risk, service, supply-chain, tool, vulnerabilityKI ist mittlerweile in den meisten Unternehmen gesetzt. Im Trend liegen aktuell vor allem Systeme mit autonomen Fähigkeiten bei denen die potenziellen Sicherheitsrisiken besonders ausgeprägt sind.KI-Agenten werden im Unternehmensumfeld immer beliebter und zunehmend in Workflows und Prozesse integriert. Etwa in den Bereichen Softwareentwicklung, Kundenservice und -Support, Prozessautomatisierung oder Employee Experience. Für CISOs und ihre Teams…