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Bleeping Computer
Microsoft announced that it will add .msix and .msixbundle attachments to the list of blocked attachments in Outlook Web and the new Outlook Windows client starting next month. [...]
The Hacker News
Microsoft on Thursday said it’s once again disabling the ms-appinstaller protocol handler by default following its abuse by multiple threat actors to distribute malware. “The observed threat actor activity abuses the current implementation of the ms-appinstaller protocol handler as an access vector for malware that may lead to ransomware distribution,” the Microsoft Threat Intelligence
Bleeping Computer
Microsoft has again disabled the MSIX ms-appinstaller protocol handler after multiple financially motivated threat groups abused it to infect Windows users with malware. [...]
The Hacker News
A new cyber attack campaign has been observed using spurious MSIX Windows app package files for popular software such as Google Chrome, Microsoft Edge, Brave, Grammarly, and Cisco Webex to distribute a novel malware loader dubbed GHOSTPULSE. "MSIX is a Windows app package format that developers can leverage to package, distribute, and install their applications to Windows users," Elastic
The Hacker News
Microsoft last week announced that it's temporarily disabling the MSIX ms-appinstaller protocol handler in Windows following evidence that a security vulnerability in the installer component was exploited by threat actors to deliver malware such as Emotet, TrickBot, and Bazaloader. MSIX, based on a combination of .msi, .appx, App-V and ClickOnce installation technologies, is a universal Windows
ZDNet Security
But disabling the protocol has also made it harder for enterprise organizations to distribute apps from a web page.
Bleeping Computer
Microsoft has disabled the MSIX ms-appinstaller protocol handler exploited in malware attacks to install malicious apps directly from a website via a Windows AppX Installer spoofing vulnerability. [...]
The Register
You didn't really want to be sending around .msix and .msixbundle files, did you?
The Hacker News
Cybersecurity researchers have uncovered a surge in malware infections stemming from malvertising campaigns distributing a loader called FakeBat. "These attacks are opportunistic in nature, targeting users seeking popular business software," the Mandiant Managed Defense team said in a technical report. "The infection utilizes a trojanized MSIX installer, which executes a PowerShell script to
Bleeping Computer
Microsoft now allows enterprise admins to re-enable the MSIX ms-appinstaller protocol handler disabled after Emotet abused it to deliver malicious Windows App Installer packages. [...]