Tag: windows
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Russian Hackers Deploy “CTRL” for RDP Hijacking
Russian hackers are using a new remote access toolkit called “CTRL” to silently hijack Remote Desktop Protocol (RDP) sessions via FRP-based reverse tunnels, enabling stealthy, hands-on access to compromised Windows systems. The toolkit blends credential theft, keylogging, and RDP abuse into a cohesive post-exploitation framework that currently flies under the radar of public malware scanners…
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CrySome RAT: Stealthy .NET Malware Adds AV Killer, HVNC Features
CrySome RAT is a newly observed, advanced .NET remote access trojan that combines full”‘featured post”‘exploitation tooling with unusually hardened persistence, AV-killing, and anti”‘removal logic, making it a serious long”‘term threat to Windows environments. The client component (Crysome.Client.exe) communicates with a TCP”‘based C2 operated by CrySome.Server.exe, with debug logging falling back to a Crysome_debug.log path if…
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ClickFix Evades PowerShell Detection via Rundll32 and WebDAV
A new variant of the ClickFix attack technique that shifts execution away from commonly monitored tools like PowerShell and mshta, instead abusing native Windows components such as rundll32.exe and WebDAV. This evolution allows attackers to bypass traditional script-based detection mechanisms, increasing the likelihood of a successful, stealthy compromise. The attack begins similarly to earlier ClickFix…
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Microsoft pulls KB5079391 Windows update over install issues
Microsoft has pulled a buggy Windows 11 non-security preview update to investigate a known issue that triggers 0x80073712 errors during installation. First seen on bleepingcomputer.com Jump to article: www.bleepingcomputer.com/news/microsoft/microsoft-pulls-windows-kb5079391-update-over-0x80073712-install-errors/
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Russian CTRL Toolkit Delivered via Malicious LNK Files Hijacks RDP via FRP Tunnels
Cybersecurity researchers have discovered a remote access toolkit of Russian-origin that’s distributed via malicious Windows shortcut (LNK) files that are disguised as private key folders.The CTRL toolkit, according to Censys, is custom-built using .NET and includes various executables” to facilitate credential phishing, keylogging, Remote Desktop Protocol (RDP) hijacking, and reverse tunneling First seen on thehackernews.com…
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Microsoft Releases Key WinRE and Setup Updates to Prepare for 2026 Secure Boot Changes
Microsoft has rolled out a critical Setup Dynamic Update, designated as KB5081494, for Windows 11 versions 24H2 and 25H2. Released on March 26, 2026, this patch introduces essential improvements to Windows setup binaries. The core objective of this release is to prepare both enterprise infrastructures and personal devices for the highly anticipated expiration of major…
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Microsoft stoppt Verteilung: Neue Update-Panne bei Windows 11
Trotz versprochener Qualitätsverbesserungen macht ein kürzlich veröffentlichtes Windows-11-Update Probleme. Microsoft zieht die Notbremse. First seen on golem.de Jump to article: www.golem.de/news/microsoft-stoppt-verteilung-neue-update-panne-bei-windows-11-2603-207042.html
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Microsoft’s March Security Update of High-Risk Vulnerability Notice for Multiple Products
Overview On March 11, NSFOCUS CERT detected that Microsoft released the March Security Update patch, which fixed 83 security issues involving widely used products such as Windows, Microsoft Office, Microsoft SQL Server, Azure, etc., including high-risk vulnerability types such as privilege escalation and remote code execution. Among the vulnerabilities fixed by Microsoft’s monthly update this…The…
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Microsoft tells crusty old kernel drivers to get with the Windows Hardware Compatibility Program
Cross-signed code gets the cold shoulder as Redmond tightens trust First seen on theregister.com Jump to article: www.theregister.com/2026/03/27/microsoft_kernel_trust/
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Fake Certificate Loader Hides BlankGrabber Malware Chain
BlankGrabber’s operators are now abusing a fake “certificate” loader to hide a multi”‘stage Rust and Python infection chain, making this commodity stealer significantly harder to spot on Windows endpoints. The new technique relies on built”‘in tools such as certutil.exe, heavily obfuscated PyInstaller stubs, and stealthy exfiltration via Telegram and public web services to evade both…
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Windows 11 KB5079391 update rolls out Smart App Control improvements
Microsoft has released the KB5079391 preview cumulative update for Windows 11 24H2 and 25H2, which includes 29 changes, such as Smart App Control and Display improvements. First seen on bleepingcomputer.com Jump to article: www.bleepingcomputer.com/news/microsoft/windows-11-kb5079391-update-rolls-out-smart-app-control-improvements/
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Windows Error Reporting Vulnerability Exposes Systems to Privilege Escalation, Allowing SYSTEM Access
Microsoft recently patched a severe Elevation of Privilege (EoP) vulnerability in the Windows Error Reporting (WER) service, officially tracked as CVE-2026-20817. This flaw allows a local attacker with standard user rights to escalate to SYSTEM privileges by exploiting improper permission handling. The vulnerability was so significant that Microsoft chose to remove the affected feature entirely…
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Bearlyfy Hits Russian Firms with Custom GenieLocker Ransomware
A pro-Ukrainian group called Bearlyfy has been attributed to more than 70 cyber attacks targeting Russian companies since it first surfaced in the threat landscape in January 2025, with recent attacks leveraging a custom Windows ransomware strain codenamed GenieLocker.”Bearlyfy (also known as Labubu) operates as a dual-purpose group aimed at inflicting maximum damage upon Russian…
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Attackers exploit critical Langflow RCE within hours as CISA sounds alarm
Tags: access, advisory, ai, api, attack, cisa, cloud, credentials, cve, cvss, data, data-breach, detection, endpoint, exploit, flaw, framework, github, infrastructure, injection, kev, malicious, monitoring, nvd, open-source, rce, remote-code-execution, software, supply-chain, threat, update, vulnerability, windowscredentials, was weaponized within 20 hours of the open-source AI-pipeline tool disclosing it.According to a Sysdig report, crooks started hitting a fleet of honeypot nodes with vulnerable instances across multiple cloud providers and regions right after they went live. Sysdig observed four such attempts within hours of deployment, with one attacker progressing to environment variable exfiltration.”This is…
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Attackers exploit critical Langflow RCE within hours as CISA sounds alarm
Tags: access, advisory, ai, api, attack, cisa, cloud, credentials, cve, cvss, data, data-breach, detection, endpoint, exploit, flaw, framework, github, infrastructure, injection, kev, malicious, monitoring, nvd, open-source, rce, remote-code-execution, software, supply-chain, threat, update, vulnerability, windowscredentials, was weaponized within 20 hours of the open-source AI-pipeline tool disclosing it.According to a Sysdig report, crooks started hitting a fleet of honeypot nodes with vulnerable instances across multiple cloud providers and regions right after they went live. Sysdig observed four such attempts within hours of deployment, with one attacker progressing to environment variable exfiltration.”This is…
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New ClickFix Attack Exploits Windows Run Dialog and macOS Terminal to Deploy Malware
Threat actors are standardizing a powerful ClickFix-based attack that abuses the Windows Run dialog box and macOS Terminal to deliver malware while sidestepping traditional browser protections. Insikt Group has tracked five distinct ClickFix activity clusters active since at least May 2024, with lures impersonating brands such as Intuit QuickBooks and Booking.com. Using Recorded Future’s HTML…
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Kein Patch verfügbar: Forscher demonstrieren Windows-Passwortklau über den Browser
Ein Forscherteam hat vor zwei Jahren eine Phishing-Technik entdeckt, die einen geschickten Passwortklau ermöglicht. Lösen will das Problem offenbar keiner. First seen on golem.de Jump to article: www.golem.de/news/kein-patch-verfuegbar-forscher-demonstrieren-windows-passwortklau-ueber-den-browser-2603-206956.html
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When Data Mining Conti Leaks Leads to Actual Binaries and to a Hardcoded C2 With an Encryption Key on Tripod.com Part Five
Tags: backdoor, control, data, detection, encryption, infrastructure, leak, malicious, malware, network, resilience, software, windowsDear blog readers, Continuing the “When Data Mining Conti Leaks Leads to Actual Binaries and to a Hardcoded C2 With an Encryption Key on Tripod.com – Part Four” blog post series in this post I’ll continue analyzing the next malicious software binary which I obtained by data mining Conti Leaks with a lot of success. …
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Linux Ransomware Pay2Key Targets Servers, Virtualization Hosts, and Cloud Workloads
Linux-focused ransomware Pay2Key is actively targeting enterprise servers, VMware ESXi virtualization hosts, and cloud workloads, underscoring how far Linux ransomware has evolved beyond simple file lockers. Originally known for fast, human-operated Windows intrusions against Israeli and Brazilian organizations, Pay2Key has re-emerged as a ransomware-as-a-service (RaaS) with explicit support for Linux environments. Recent research shows that newer…
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Linux Ransomware Pay2Key Targets Servers, Virtualization Hosts, and Cloud Workloads
Linux-focused ransomware Pay2Key is actively targeting enterprise servers, VMware ESXi virtualization hosts, and cloud workloads, underscoring how far Linux ransomware has evolved beyond simple file lockers. Originally known for fast, human-operated Windows intrusions against Israeli and Brazilian organizations, Pay2Key has re-emerged as a ransomware-as-a-service (RaaS) with explicit support for Linux environments. Recent research shows that newer…
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Linux Ransomware Pay2Key Targets Servers, Virtualization Hosts, and Cloud Workloads
Linux-focused ransomware Pay2Key is actively targeting enterprise servers, VMware ESXi virtualization hosts, and cloud workloads, underscoring how far Linux ransomware has evolved beyond simple file lockers. Originally known for fast, human-operated Windows intrusions against Israeli and Brazilian organizations, Pay2Key has re-emerged as a ransomware-as-a-service (RaaS) with explicit support for Linux environments. Recent research shows that newer…
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Linux Ransomware Pay2Key Targets Servers, Virtualization Hosts, and Cloud Workloads
Linux-focused ransomware Pay2Key is actively targeting enterprise servers, VMware ESXi virtualization hosts, and cloud workloads, underscoring how far Linux ransomware has evolved beyond simple file lockers. Originally known for fast, human-operated Windows intrusions against Israeli and Brazilian organizations, Pay2Key has re-emerged as a ransomware-as-a-service (RaaS) with explicit support for Linux environments. Recent research shows that newer…
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Google’s TurboQuant cuts AI memory use without losing accuracy
Large language models carry a persistent scaling problem. As context windows grow, the memory required to store key-value (KV) caches expands proportionally, consuming GPU … First seen on helpnetsecurity.com Jump to article: www.helpnetsecurity.com/2026/03/25/google-turboquant-ai-model-compression/
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FBI Warns of Iran’s Handala Hack Group Using Fake Apps to Spy on Windows Users
The FBI has issued a warning about Iran-linked Handala Hack Group, targeting Windows users through fake versions of WhatsApp and Telegram. First seen on hackread.com Jump to article: hackread.com/fbi-iran-handala-hack-group-fake-apps-spy-windows/
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Chrome Security Update Fixes 8 Vulnerabilities That Could Enable Remote Code Execution
Google has released a crucial security update for its Chrome browser, addressing eight high-severity vulnerabilities. Users are strongly advised to update their browsers immediately to protect their systems from potential remote code execution attacks. The stable channel update rolls out versions 146.0.7680.164 and 146.0.7680.165 for Windows and Mac users, while Linux users will receive version…
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Windows 11 Patch Triggers Sign-In Failures Across Microsoft Apps
A Windows 11 security update triggered Microsoft app sign-in failures, prompting an emergency patch and a manual workaround for affected users. The post Windows 11 Patch Triggers Sign-In Failures Across Microsoft Apps appeared first on TechRepublic. First seen on techrepublic.com Jump to article: www.techrepublic.com/article/news-windows-11-update-login-error-march-2026/
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Microsoft fixes broken Windows update days after vowing fewer broken updates
The era of reliability begins… right after this out-of-band patch First seen on theregister.com Jump to article: www.theregister.com/2026/03/23/emergency_fix_windows_11/
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Behavioral XDR and threat intel nab North Korean fake IT worker within 10 days of hire
Key signs of NK-linked insider infiltration: SpiderLabs has found that these threat actors commonly operate from China rather than North Korea because the internet is more stable and they can employ VPN services to conceal their true geographic origin.Astrill VPN has the ability to bypass China’s Great Firewall and allows threat actors to tunnel traffic…