Sigma

Sigma Rules Huntress Labsで開発されたSigmaルールのコレクション Twitter: https://twitter.com/embeeresearch https://twitter.com/HuntressLabs ライセンス これらのルールは、適切なクレジット（作者/所有者など）が維持されることを条件として、実質的に制限なく自由に使用できます。 Detection Rule License DRL 1.1...

Watch Out! Researchers Spot New Microsoft Office Zero-Day Exploit in the Wild

Cybersecurity researchers are calling attention to a zero-day flaw in Microsoft Office that could be abused to achieve arbitrary code execution on affected Windows systems. The vulnerability came to light after an independent cybersecurity research team known as naosec uncovered a Word document...

The 2021 Naughty and Nice Lists: Cybersecurity Edition

Editor’s note: We had planned to publish our Hacky Holidays blog series throughout December 2021 – but then Log4Shell happened, and we dropped everything to focus on this major vulnerability that impacted the entire cybersecurity community worldwide. Now that it’s 2022, we’re feeling in need of...

BillQuick Billing App Rigged to Inflict Ransomware

Threat actors have been caught exploiting a now-patched zero-day critical vulnerability in a popular timeclock and billing system, to take over vulnerable servers and inflict companies’ networks with ransomware. Discovered by Huntress Labs earlier this month, the ongoing attacks focus on an...

WARNING: Microsoft Exchange Under Attack With ProxyShell Flaws

The U.S. Cybersecurity and Infrastructure Security Agency is warning of active exploitation attempts that leverage the latest line of "ProxyShell" Microsoft Exchange vulnerabilities that were patched earlier this May, including deploying LockFile ransomware on compromised systems. Tracked as...

CISA Orders Fed Agencies to Patch Exchange Servers

Hot on the heels of Microsoft’s announcement about active cyber-espionage campaigns that are exploiting four serious security vulnerabilities in Microsoft Exchange Server, the U.S. government is mandating patching for the issues. The news comes as security firms report escalating numbers of relat...