SANS Internet Storm Center's Daily Network Security News Podcast

SANS Stormcast ThursdayApril 10th: Getting Past PyArmor; CenterStack RCE; Android 0-Day Patch; VMware Tanzu Patches; Odd Win11 Directory; WhatsApp File Confusion; SANS AI Guide; Getting Past PyArmor PyArmor is a python obfuscation tool used for malicious and non-malicious software. Xavier is taking a look at a sample to show what can be learned from these obfuscated samples with not too much work....

SANS Stormcast Tuesday, April 8th: Microsoft Patch Tuesday; Adobe Patches; OpenSSL 3.5 with PQC; Fortinet Microsoft Patch Tuesday Microsoft patched over 120 vulnerabilities this month. 11 of these were rated critical, and one vulnerability is already being exploited. https://isc.sans.edu/diary/Microsoft%20April%202025%20Patch%20Tuesday/31838 Adobe Updates Adobe released patches for 12 different pr...

SANS Stormcast Tuesday, April 8th: XORsearch: Searching With Regexes Didier explains a workaround to use his tool XORsearch to search for regular expressions instead of simple strings. https://isc.sans.edu/diary/XORsearch%3A%20Searching%20With%20Regexes/31834 MCP Security Notification: Tool Poisoning Attacks Invariant labs summarized a critical weakness in the Model Context Protocol (MCP) that all...

SANS Stormcast Monday April 7th 2025: New Username Report; Quickshell Vulnerability; Apache Traffic Director Request Smuggeling New SSH Username Report A new ssh/telnet username reports makes it easier to identify new usernames attackers are using against our telnet and ssh honeypots https://isc.sans.edu/diary/New%20SSH%20Username%20Report/31830 Quickshell Sharing is Caring: About an RCE Attack Ch...

SANS Stormcast Friday, Apr 4th: URL Frequency Analysis; Ivanti Flaw Exploited; WinRAR MotW Vuln; Tax filing scams; Oracle Breach Update Exploring Statistical Measures to Predict URLs as Legitimate or Intrusive Using frequency analysis, and training the model with honeypot data as well as log data from legitimate websites allows for a fairly simple and reliable triage of web server logs to identify...

SANS Stormcast Thursday Apr 3rd: Juniper Password Scans; Hacking Call Records; End to End Encrypted GMail Surge in Scans for Juniper "t128" Default User Lasst week, we dedtect a significant surge in ssh scans for the username "t128". This user is used by Juniper's Session Smart Routing, a product they acquired from "128 Technologies" which is the reason for the somewhat unusual username. https://i...

SANS Stormcast Wednesday Apr 2nd: Apple Updates Everything; Apple Patches Everything Apple released updates for all of its operating systems. Most were released on Monday with WatchOS patches released today on Tuesday. Two already exploited vulnerabilities, which were already patched in the latest iOS and macOS versions, are now patched for older operating systems as well. A total of 145 vulnerabi...

SANS Stormcast Tuesday Apr 1st: Apache Camel Exploits; New Cert Authorities Requirements; Possible Oracle Breach Apache Camel Exploit Attempt by Vulnerability Scans A recently patched vulnerability in Apache Camel has been integrated into some vulnerability scanners, like for example OpenVAS. We do see some exploit attempts in our honeypots, but they appear to be part of internal vulnerablity scan...

SANS Stormcast Monday, March 31st: Comparing Phishing Sites; DOH and MX Abuse Phishing; opkssh A Tale of Two Phishing Sties Two phishing sites may use very different backends, even if the site itself appears to be visually very similar. Phishing kits are often copied and modified, leading to sites using similar visual tricks on the user facing site, but very different backends to host the sites an...

SANS Stormcast Friday, March 27th: Sitecore Exploited; Blasting Past Webp; Splunk and Firefox Vulnerabilities Sitecore "thumbnailsaccesstoken" Deserialization Scans (and some new reports) CVE-2025-27218 Our honeypots detected a deserialization attack against the CMS Sitecore using a "thumnailaccesstoken" header. The underlying vulnerability was patched in January, and security firm Searchlight Cyb...

SANS Stormcast Thursday Mar 27th: Classifying Malware with ML; Malicious NPM Packages; Google Chrome 0-day Leveraging CNNs and Entropy-Based Feature Selection to Identify Potential Malware Artifacts of Interest This diary explores a novel methodology for classifying malware by integrating entropy-driven feature selection with a specialized Convolutional Neural Network (CNN). Motivated by the incre...

SANS Stormcast Wednesday Mar 26th: XWiki Exploit; File Converter Correction; VMWare Vulnerability; Draytek Router Reboots; MMC Exploit Details; XWiki Search Vulnerablity Exploit Attempts (CVE-2024-3721) Our honeypot detected an increase in exploit attempts for an XWiki command injection vulnerablity. The vulnerability was patched last April, but appears to be exploited more these last couple days....

SANS Stormcast Tuesday Mar 25th: Privacy Awware Bots; Ingress Nightmare; Malicious File Converters; VSCode Extension Leads to Ransomware Privacy Aware Bots A botnet is using privacy as well as CSRF prevention headers to better blend in with normal browsers. However, in the process they may make it actually easier to spot them. https://isc.sans.edu/diary/Privacy%20Aware%20Bots/31796 Critical Ingres...

SANS Stormcast Monday Mar 24th: Critical Next.js Vulnerability; Microsoft Trust Signing Platform Abuse Critical Next.js Vulnerability CVE-2025-29927 A critical vulnerability in how the x-middleware-subrequest header is verified may lead to bypassing authorization in Next.js applications. https://zhero-web-sec.github.io/research-and-things/nextjs-and-the-corrupt-middleware https://github.com/vercel...

SANS Stormcast Friday Mar 21st: New Data Feeds; SEO Spam; Veeam Deserialization; IBM AIX RCE; Some New Data Feeds and Little Incident We started offering additional data feeds, and an SEO spamer attempted to make us change a link from an old podcast episode. https://isc.sans.edu/diary/Some%20new%20Data%20Feeds%2C%20and%20a%20little%20%22incident%22./31786 Veeam Deserialization Vulnerability Veeam...

SANS Stormcast Thursday Mar 20th: Cisco Smart Licensing Attacks; Vulnerable Drivers again; Synology Advisories Updated Exploit Attempts for Cisco Smart Licensing Utility CVE-2024-20439 CVE-2024-20440 Attackers added last September's Cisco Smart Licensing Utility vulnerability to their toolset. These attacks orginate most likely from botnets and the same attackers are scanning for a wide range of a...

SANS Stormcast Wednesday Mar 19th 2025: Python DLL Side Loading; Tomcast RCE Correction; SAML Roulette; Windows Shortcut 0-Day Python Bot Delivered Through DLL Side-Loading A "normal", but vulnerable to DLL side-loading PDF reader may be used to launch additional exploit code https://isc.sans.edu/diary/Python%20Bot%20Delivered%20Through%20DLL%20Side-Loading/31778 Tomcat RCE Correction To exploit t...

SANS Stormcast Monday Mar 17th 2025: Analyzing GUID Encoded Shellcode; Node.js SAML Vuln; Tomcat RCE in the Wild; CSS e-mail obfuscation Static Analysis of GUID Encoded Shellcode Didier explains how to decode shell code embeded as GUIDs in malware, and how to feed the result to his tool 1768.py which will extract Cobal Strike configuration information from the code. https://isc.sans.edu/diary/Stat...

SANS Stormcast Monday March 17th: Mirai Makes Mistakes; Compromised Github Action; ruby-saml vulnerability; Fake GitHub Security Alert Phishing Mirai Bot Now Incorporating Malformed DrayTek Vigor Router Exploits One of the many versions of the Mirai botnet added some new exploit strings attempting to take advantage of an old DrayTek Vigor Router vulnerability, but they got the URL wrong. https://i...

SANS Stormcast: File Hashes in MSFT BI; Apache Camel Vuln; Juniper Fixes Exploited Vuln; AMI Patches 10.0 Redfish BMC Vuln File Hashes Analysis with Power BI Guy explains in this diary how to analyze Cowrie honeypot file hashes using Microsoft's BI tool and what you may be able to discover using this tool. https://isc.sans.edu/diary/File%20Hashes%20Analysis%20with%20Power%20BI%20from%20Data%20Stor...

SANS Stormcast Thursday Mar 13th: Exploiting Login Pages with Log4j; Patch Tuesday Fallout; Adobe Patches; Medusa Ransomware; Zoom and Font Library Updates; Log4J Scans for VMWare Hyhbrid Cloud Extensions An attacker is scanning various login pages, including the authentication feature in the VMWare HCX REST API for Log4j vulnerabilities. The attack submits the exploit string as username, hoping t...

SANS Stormcast Wednesday Mar 12th: Microsoft Patch Tuesday; Apple Patch; Espressif ESP32 Statement Microsoft Patch Tuesday Microsoft Patched six already exploited vulnerabilities today. In addition, the patches included a critical patch for Microsoft's DNS server and about 50 additional patches. https://isc.sans.edu/diary/Microsoft%20Patch%20Tuesday%3A%20March%202025/31756 Apple Updates iOS/macOS...

SANS Stormcast Tuesday Mar 11th: Shellcode as UUIDs; Moxe Switch Vuln Updates; Opentext Vuln; Livewire Volt Vuln; Shellcode Encoded in UUIDs Attackers are using UUIDs to encode Shellcode. The 128 Bit (or 16 Bytes) encoded in each UUID are converted to shell code to implement a cobalt strike beacon https://isc.sans.edu/diary/Shellcode%20Encoded%20in%20UUIDs/31752 Moxa CVE-2024-12297 Expanded to PT...

SANS Stormcast: Webshells; Undocumented ESP32 Commands; Camera Used For Ransomware Distribution Commonly Probed Webshell URLs Many attackers deploy web shells to gain a foothold on vulnerable web servers. These webshells can also be taken over by parasitic exploits. https://isc.sans.edu/diary/Commonly%20Probed%20Webshell%20URLs/31748 Undocumented ESP32 Commands A recent conference presentation by...

SANS Stormcast Friday Mar 7th: Chrome vs Extensions; Kibana Update; PrePw0n3d Android TV Sticks; Identifying APTs (@sans_edu, Eric LeBlanc) Latest Google Chrome Update Encourages UBlock Origin Removal The latest update to Google Chrome not only disabled the UBlock Origin ad blocker, but also guides users to uninstall the extension instead of re-enabling it. https://chromereleases.googleblog.com/20...