SANS Stormcast Tuesday Mar 4th: Mark of the Web Details; Sharepint and Click-Fix Phishing; Paragon Partionmanager BYOVD Exploit

SANS Internet Stormcenter Daily Cyber Security Podcast (Stormcast)

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State Secrets: Inside The Making Of The Electric State

1
Family Secrets: Chris Pratt & Millie Bobby Brown Share Stories From Set 22:08

25 days ago22:08

Main Kemudian

Senarai

Suka

Disukai

22:08

Host Francesca Amiker sits down with directors Joe and Anthony Russo, producer Angela Russo-Otstot, stars Millie Bobby Brown and Chris Pratt, and more to uncover how family was the key to building the emotional core of The Electric State . From the Russos’ own experiences growing up in a large Italian family to the film’s central relationship between Michelle and her robot brother Kid Cosmo, family relationships both on and off of the set were the key to bringing The Electric State to life. Listen to more from Netflix Podcasts . State Secrets: Inside the Making of The Electric State is produced by Netflix and Treefort Media.…

about a year ago 6:17

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Mark of the Web: Some Technical Details
Windows implements the "Mark of the Web" (MotW) as an alternate data stream that contains not just the "zoneid" of where the file came from, but may include other data like the exact URL and referrer.
https://isc.sans.edu/diary/Mark%20of%20the%20Web%3A%20Some%20Technical%20Details/31732
Havoc Sharepoint with Microsoft Graph API
A recent phishing attack observed by Fortinet uses a simple HTML email to trick a user into copy pasting powershell into their system to execute additional code. Most of the malware interaction uses a Sharepoint site via Microsoft's Graph API futher hiding the malicious traffic
https://www.fortinet.com/blog/threat-research/havoc-sharepoint-with-microsoft-graph-api-turns-into-fud-c2
Paragon Partition Manager Exploit
A vulnerable Paragon Partition Manager has been user recently to escalate privileges for ransomware deployment. Even if you to not have PAragon installed: An attacker may just "bring the vulnerable driver" to your system.
https://kb.cert.org/vuls/id/726882

3005 episod

#Security #Tech #Software Development #SANS ISC Handlers #Johannes B. Ullrich #News #Tech News

SANS Stormcast Tuesday Mar 4th: Mark of the Web Details; Sharepint and Click-Fix Phishing; Paragon Partionmanager BYOVD Exploit

SANS Internet Stormcenter Daily Cyber Security Podcast (Stormcast)

2,366 subscribers

published about a year ago

Kongsi

MP3•Laman utama episod

3005 episod

#Security #Tech #Software Development #SANS ISC Handlers #Johannes B. Ullrich #News #Tech News

All episodes

1
SANS Stormcast Tuesday, April 8th: 6:18

3 hours ago6:18

6:18

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 allows for "Tool Poisoning Attacks." Many major providers such as Anthropic and OpenAI, workflow automation systems like Zapier, and MCP clients like Cursor are susceptible to this attack https://invariantlabs.ai/blog/mcp-security-notification-tool-poisoning-attacks Making :visited more private Google Chrome changed how links are marked as visited . This new partitioning scheme was introduced to improve privacy. Instead of marking a link as visited on any page where it is displayed, it is only marked as visited if the user clicks on the link while visiting the particular site where the link is displayed. https://developer.chrome.com/blog/visited-links…

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SANS Stormcast Monday April 7th 2025: New Username Report; Quickshell Vulnerability; Apache Traffic Director Request Smuggeling 6:14

1 day ago6:14

6:14

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 Chain on Quick Share The Google Quick Share protocol is susceptible to several vulnerabilities that have not yet been fully patched, allowing for some file overwrite issues that could lead to the accidental execution of malicious code. https://www.blackhat.com/asia-25/briefings/schedule/index.html#quickshell-sharing-is-caring-about-an-rce-attack-chain-on-quick-share-43874 Apache Traffic Director Request Smuggling Vulnerability https://www.openwall.com/lists/oss-security/2025/04/02/4…

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SANS Stormcast Friday, Apr 4th: URL Frequency Analysis; Ivanti Flaw Exploited; WinRAR MotW Vuln; Tax filing scams; Oracle Breach Update 6:16

4 days ago6:16

6:16

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 possible malicious activity. https://isc.sans.edu/diary/Exploring%20Statistical%20Measures%20to%20Predict%20URLs%20as%20Legitimate%20or%20Intrusive%20%5BGuest%20Diary%5D/31822 Critical Unexploitable Ivanti Vulnerability Exploited CVE-2025-22457 In February, Ivanti patched CVE-2025-22457. At the time, the vulnerability was not considered to be exploitable. Mandiant now published a blog disclosing that the vulnerability was exploited as soon as mid-march https://cloud.google.com/blog/topics/threat-intelligence/china-nexus-exploiting-critical-ivanti-vulnerability/ WinRAR MotW Vulnerability CVE-2025-31334 WinRAR patched a vulnerability that would not apply the Mark of the Web correctly if a compressed file included symlinks. This may make it easier to trick a victim into executing code downloaded from a website. https://nvd.nist.gov/vuln/detail/CVE-2025-31334 Microsoft Warns of Tax-Related Scam With the US personal income tax filing deadline only about a week out, Microsoft warns of commonly deployed scams that they are observing related to income tax filings https://www.microsoft.com/en-us/security/blog/2025/04/03/threat-actors-leverage-tax-season-to-deploy-tax-themed-phishing-campaigns/ Oracle Breach Update https://www.bloomberg.com/news/articles/2025-04-02/oracle-tells-clients-of-second-recent-hack-log-in-data-stolen…

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SANS Stormcast Thursday Apr 3rd: Juniper Password Scans; Hacking Call Records; End to End Encrypted GMail 9:23

5 days ago9:23

9:23

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://isc.sans.edu/diary/Surge%20in%20Scans%20for%20Juniper%20%22t128%22%20Default%20User/31824 Vulnerable Verizon API Allowed for Access to Call Logs An API Verizon offered to users of its call filtering application suffered from an authentication bypass vulnerability allowing users to access any Verizon user s call history. While using a JWT to authenticate the user, the phone number used to retrieve the call history logs was passed in a not-authenticated header. https://evanconnelly.github.io/post/hacking-call-records/ Google Offering End-to-End Encryption to G-Mail Business Users Google will add an end-to-end encryption feature to commercial GMail users. However, for non GMail users to read the emails they first must click on a link and log in to Google. https://workspace.google.com/blog/identity-and-security/gmail-easy-end-to-end-encryption-all-businesses…

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SANS Stormcast Wednesday Apr 2nd: Apple Updates Everything; 7:16

6 days ago7:16

7:16

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 vulnerabilities were patched. https://isc.sans.edu/diary/Apple%20Patches%20Everything%3A%20March%2031st%202025%20Edition/31816 VMWare Workstation and Fusion update check broken VMWare s automatic update check in its Workstation and Fusion products is currently broken due to a redirect added as part of the Broadcom transition https://community.broadcom.com/vmware-cloud-foundation/question/certificate-error-is-occured-during-connecting-update-server NIM Postgres Vulnerability NIM Developers using prepared statements to send SQL queries to Postgres may expose themselves to a SQL injection vulnerability. NIM s Postgres library does not appear to use actual prepared statements; instead, it assembles the code and the user data as a string and passes them on to the database. This may lead to a SQL injection vulnerability https://blog.nns.ee/2025/03/28/nim-postgres-vulnerability/…

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SANS Stormcast Tuesday Apr 1st: Apache Camel Exploits; New Cert Authorities Requirements; Possible Oracle Breach 7:36

7 days ago7:36

7:36

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 scans https://isc.sans.edu/diary/Apache%20Camel%20Exploit%20Attempt%20by%20Vulnerability%20Scan%20%28CVE-2025-27636%2C%20CVE-2025-29891%29/31814 New Security Requirements for Certificate Authorities Starting in July, certificate authorities need to verify domain ownership data from multiple viewpoints around the internet. They will also have to use linters to verify certificate requests. https://security.googleblog.com/2025/03/new-security-requirements-adopted-by.html Possible Oracle Breach Oracle still denies being the victim of a data berach as leaked data may show different. https://doublepulsar.com/oracle-attempt-to-hide-serious-cybersecurity-incident-from-customers-in-oracle-saas-service-9231c8daff4a https://www.theregister.com/2025/03/30/infosec_news_in_brief/ https://www.darkreading.com/cyberattacks-data-breaches/oracle-still-denies-breach-researchers-persist…

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SANS Stormcast Monday, March 31st: Comparing Phishing Sites; DOH and MX Abuse Phishing; opkssh 7:15

8 days ago7:15

7:15

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 and reporting data to the miscreant. https://isc.sans.edu/diary/A%20Tale%20of%20Two%20Phishing%20Sites/31810 A Phihsing Tale of DOH and DNS MX Abuse Infoblox discovered a new variant of the Meerkat phishing kit that uses DoH in Javascript to discover MX records, and generate better customized phishing pages. https://blogs.infoblox.com/threat-intelligence/a-phishing-tale-of-doh-and-dns-mx-abuse/ Using OpenID Connect for SSH Cloudflare opensourced it's OPKSSH too. It integrates SSO systems supporting OpenID connect with SSH. https://github.com/openpubkey/opkssh/…

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SANS Stormcast Friday, March 28th: Sitecore Exploited; Blasting Past Webp; Splunk and Firefox Vulnerabilities 6:15

11 days ago6:15

6:15

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 Cyber revealed details about this vulnerability a couple of weeks ago. https://isc.sans.edu/diary/Sitecore%20%22thumbnailsaccesstoken%22%20Deserialization%20Scans%20%28and%20some%20new%20reports%29%20CVE-2025-27218/31806 Blasting Past Webp Google s Project Zero revealed details how the NSO BLASTPASS exploit took advantage of a Webp image parsing vulnerability in iOS. This zero-click attack was employed in targeted attack back in 2023 and Apple patched the underlying vulnerability in September 2023. But this is the first byte by byte description showing how the attack worked. https://googleprojectzero.blogspot.com/2025/03/blasting-past-webp.html Splunk Vulnerabilities Splunk patched about a dozen of vulnerabilities. None of them are rated critical, but a vulnerability rated High allows authenticated users to execute arbitrary code. https://advisory.splunk.com/ Firefox 0-day Patched Mozilla patched a sandbox escape vulnerability that is already being exploited. https://www.mozilla.org/en-US/security/advisories/mfsa2025-19/…

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SANS Stormcast Thursday Mar 27th: Classifying Malware with ML; Malicious NPM Packages; Google Chrome 0-day 4:50

12 days ago4:50

4:50

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 increasing obfuscation tactics used by modern malware authors, we will focus on capturing high-entropy segments within files, regions most likely to harbor malicious functionality, and feeding these distinct byte patterns into our model. https://isc.sans.edu/diary/%5BGuest%20Diary%5D%20Leveraging%20CNNs%20and%20Entropy-Based%20Feature%20Selection%20to%20Identify%20Potential%20Malware%20Artifacts%20of%20Interest/31790 Malware found on npm infecting local package with reverse shell Researchers at Reversinglabs found two malicious NPM packages, ethers-provider2, and ethers-providerz that patch the well known (and not malicious) ethers package to add a reverse shell and downloader. https://www.reversinglabs.com/blog/malicious-npm-patch-delivers-reverse-shell Google Patched Google Chrome 0-day Google patched a vulnerability in Chrome that was already exploited in attacks against media and educational organizations in Russia https://chromereleases.googleblog.com/2025/03/stable-channel-update-for-desktop_25.html…

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SANS Stormcast Wednesday Mar 26th: XWiki Exploit; File Converter Correction; VMWare Vulnerability; Draytek Router Reboots; MMC Exploit Details; 6:14

13 days ago6:14

6:14

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. The vulnerability affects the search feature and allows the attacker to inject Groovy code templates. https://isc.sans.edu/diary/X-Wiki%20Search%20Vulnerability%20exploit%20attempts%20%28CVE-2024-3721%29/31800 Correction: FBI Image Converter Warning The FBI's Denver office warned of online file converters, not downloadable conversion tools https://www.fbi.gov/contact-us/field-offices/denver/news/fbi-denver-warns-of-online-file-converter-scam VMWare Vulnerability Broadcom released a fix for a VMWare Tools vulnerability. The vulnerability allows users of a Windows virtual machine to escalate privileges within the machine. https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/0/25518 Draytek Reboots Over the weekend, users started reporting Draytek routers rebooting and getting stuck in a reboot loop. Draytek now published advise as to how to fix the problem. https://faq.draytek.com.au/docs/draytek-routers-rebooting-how-to-solve-this-issue/ Microsoft Managemnt Console Exploit CVE-2025-26633 TrendMicro released details showing how the MMC vulnerability Microsoft patched as part of its patch tuesday this month was exploited. https://www.trendmicro.com/en_us/research/25/c/cve-2025-26633-water-gamayun.html…

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SANS Stormcast Tuesday Mar 25th: Privacy Awware Bots; Ingress Nightmare; Malicious File Converters; VSCode Extension Leads to Ransomware 5:55

14 days ago5:55

5:55

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 Ingress Nightmare Vulnerability ingress-nginx fixed four new vulnerabilities, one of which may lead to a Kubernetes cluster compromise. Note that at the time I am making this live, not all of the URLs below are available yet, but I hope they will be available shortly after publishing this podcast https://www.darkreading.com/application-security/critical-ingressnightmare-vulns-kubernetes-environments https://www.wiz.io/blog/ingress-nginx-kubernetes-vulnerabilities https://kubernetes.io/blog/ FBI Warns of File Converter Scams File converters may include malicious ad ons. Be careful where you get your software from. https://www.fbi.gov/contact-us/field-offices/denver/news/fbi-denver-warns-of-online-file-converter-scam VSCode Extension Includes Ransomware https://x.com/ReversingLabs/status/1902355043065500145…

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SANS Stormcast Monday Mar 24th: Critical Next.js Vulnerability; Microsoft Trust Signing Platform Abuse 7:10

15 days ago7:10

7:10

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/next.js/security/advisories/GHSA-f82v-jwr5-mffw https://www.runzero.com/blog/next-js/ Microsoft Trust Signing Service Abused Attackers abut the Microsoft Trust Signing Service, a service meant to help developers create signed software, to obtain short lived signatures for malware. https://www.bleepingcomputer.com/news/security/microsoft-trust-signing-service-abused-to-code-sign-malware/…

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SANS Stormcast Friday Mar 21st: New Data Feeds; SEO Spam; Veeam Deserialization; IBM AIX RCE; 8:24

18 days ago8:24

8:24

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 released details regarding the latest vulnerablity in Veeam, pointing out the insufficient patch applied to a prior deserialization vulnerability. https://labs.watchtowr.com/by-executive-order-we-are-banning-blacklists-domain-level-rce-in-veeam-backup-replication-cve-2025-23120/ IBM AIX Vulnerablity The AIX NIM service is vulnerable to an unauthenticated remote code execution vulnerability https://www.ibm.com/support/pages/node/7186621 thanks Chris Mosby for Spotify comment…

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SANS Stormcast Thursday Mar 20th: Cisco Smart Licensing Attacks; Vulnerable Drivers again; Synology Advisories Updated 7:09

19 days ago7:09

7:09

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 additional vulnerabilities. The vulnerability is a static credential issue and trivial to exploit after the credentials were published last fall. https://isc.sans.edu/diary/Exploit%20Attempts%20for%20Cisco%20Smart%20Licensing%20Utility%20CVE-2024-20439%20and%20CVE-2024-20440/31782 Legacy Driver Exploitation Through Bypassing Certificate Verification Ahnlab documented a new type of "bring your own vulnerable driver" vulnerability. In this case, an old driver used by an anit-malware and anti-rootkit system can be used to shut down arbitrary processeses, including security related processeses. https://asec.ahnlab.com/en/86881/ Synology Vulnerability Updates Synology updates some security advisories it release last year adding addition details and vulnerable systems. https://www.synology.com/en-global/security/advisory/Synology_SA_24_20 https://www.synology.com/en-global/security/advisory/Synology_SA_24_24…

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SANS Stormcast Wednesday Mar 19th 2025: Python DLL Side Loading; Tomcast RCE Correction; SAML Roulette; Windows Shortcut 0-Day 7:18

20 days ago7:18

7:18

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 the Tomcat RCE I mentioned yesterday, two non-default configuration options must be selected by the victim. https://x.com/dkx02668274/status/1901893656316969308 SAML Roulette: The Hacker Always Wins This Portswigger blog explains in detail how to exploit the ruby-saml vulnerablity against GitLab. https://portswigger.net/research/saml-roulette-the-hacker-always-wins Windows Shortcut Zero Day Exploit Attackers are currently taking advantage of an unpatched vulnerability in how Windows displays Shortcut (.lnk file) details. Trendmicro explains how the attack works and provides PoC code. Microsoft is not planning to fix this issue https://www.trendmicro.com/en_us/research/25/c/windows-shortcut-zero-day-exploit.html…

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