SANS Internet Stormcenter Daily Cyber Security Podcast (Stormcast)

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Latest Episodes:

SANS Stormcast Monday, June 16th, 2025: Extracting Data from JPEG; Windows Recall Export; Anubis Wiper; Mitel Vuln and PoC Jun 17, 2025

Show notes

Extracting Data From JPEGs
Didier shows how to efficiently extract data from JPEGs using his tool jpegdump.py
https://isc.sans.edu/diary/A%20JPEG%20With%20A%20Payload/32048
Windows Recall Export in Europe
In its latest insider build for Windows 11, Microsoft is testing an export feature for data stored by Recall. The feature is limited to European users and requires that you note an encryption key that will be displayed only once as Recall is enabled.
https://blogs.windows.com/windows-insider/2025/06/13/announcing-windows-11-insider-preview-build-26120-4441-beta-channel/
Anubis Ransomware Now Wipes Data
The Anubis ransomware, usually known for standard double extortion, is now also wiping data preventing any recovery even if you pay the ransom.
https://www.trendmicro.com/en_us/research/25/f/anubis-a-closer-look-at-an-emerging-ransomware.html
Mitel Vulnerabilities CVE-2025-47188
Mitel this week patched a critical path traversal vulnerability (sadly, no CVE), and Infoguard Labs published a PoC exploit for an older file upload vulnerability.
https://labs.infoguard.ch/posts/cve-2025-47188_mitel_phone_unauthenticated_rce/ https://www.mitel.com/support/mitel-product-security-advisory-misa-2025-0007

SANS Stormcast Monday, June 16th, 2025: Katz Stealer in JPG; JavaScript Attacks; Reviving expired Discord Invites for Evil Jun 16, 2025

Show notes

Katz Stealer in JPG
Xavier found some multistage malware that uses an Excel Spreadsheet and an HTA file to load an image that includes embeded a copy of Katz stealer.
https://isc.sans.edu/diary/More+Steganography/32044
https://unit42.paloaltonetworks.com/malicious-javascript-using-jsfiretruck-as-obfuscation/
JavaScript obfuscated with JSF*CK is being used on over 200,000 websites to direct victims to malware
Expired Discord Invite Links Used for Malware Distribution
Expired discord invite links are revived as vanity links to direct victims to malware sites
https://research.checkpoint.com/2025/from-trust-to-threat-hijacked-discord-invites-used-for-multi-stage-malware-delivery/

SANS Stormcast Friday, June 13th, 2025: Honeypot Scripts; EchoLeak MSFT Copilot Vuln; Thunderbolt mailbox URL Vuln; Jun 13, 2025

Show notes

Automated Tools to Assist with DShield Honeypot Investigations
https://isc.sans.edu/diary/Automated%20Tools%20to%20Assist%20with%20DShield%20Honeypot%20Investigations%20%5BGuest%20Diary%5D/32038
EchoLeak: Zero-Click Microsoft 365 Copilot Data Leak
Microsoft fixed a vulnerability in Copilot that could have been abused to exfiltrate data from Copilot users. Copilot mishandled instructions an attacker included in documents inspected by Copilot and executed them.
https://www.aim.security/lp/aim-labs-echoleak-blogpost
Thunderbolt Vulnerability
Thunderbolt users may be tricked into downloading arbitrary files if an email includes a mailbox:/// URL.
https://www.mozilla.org/en-US/security/advisories/mfsa2025-49/

SANS Stormcast Thursday, June 12th, 2025: Quasar RAT; Windows 11 24H2 Delay; SMB Client Vuln PoC; Connectwise Signing Keys; KDE Telnet code exec Jun 12, 2025

Show notes

Quasar RAT Delivered Through Bat Files
Xavier is walking you through a quick reverse analysis of a script that will injection code extracted from a PNG image to implement a Quasar RAT.
https://isc.sans.edu/diary/Quasar%20RAT%20Delivered%20Through%20Bat%20Files/32036
Delayed Windows 11 24H2 Rollout
Microsoft slightly throttled the rollout of windows 11 24H2 due to issues stemming from the patch Tuesday fixes.
https://learn.microsoft.com/en-us/windows/release-health/windows-message-center#3570
An In-Depth Analysis of CVE-2025-33073
Patch Tuesday fixed an already exploited SMB client vulnerability. A blog by Synacktiv explains the nature of the issue and how to exploit it.
https://www.synacktiv.com/en/publications/ntlm-reflection-is-dead-long-live-ntlm-reflection-an-in-depth-analysis-of-cve-2025
Connectwise Rotating Signing Certificates
Connectwise is rotating signing certificates after a recent compromise, and will release a new version of its Screen share software soon to harden its configuration.
https://www.connectwise.com/company/trust/advisories
KDE Telnet URL Vulnerablity
The Konsole delivered as part of KDE may be abused to execute arbitrary code via telnet URLs.
https://kde.org/info/security/advisory-20250609-1.txt

SANS Stormcast Wednesday, June 11th, 2025: Microsoft Patch Tuesday; Acrobat Patches Jun 11, 2025

Show notes

Microsoft Patch Tuesday
Microsoft today released patches for 67 vulnerabilities. 10 of these vulnerabilities are rated critical. One vulnerability has already been exploited and another vulnerability has been publicly disclosed before today.
https://isc.sans.edu/diary/Microsoft%20Patch%20Tuesday%20June%202025/32032
Adobe Vulnerabilities
Adobe released patches for 7 different applications. Two significant ones are Adobe Commerce and Adobe Acrobat Reader. All vulnerabilities patched for Adobe Commerce can only be exploited by an authenticated user. The Adobe Acrobat Reader vulnerabilities are exploited by a user opening a crafted PDF, and the exploit may execute arbitrary code.
https://helpx.adobe.com/security/Home.html

SANS Stormcast June, Tuesday, June 10th, 2025: Octosql; Mirai vs. Wazuh DNS4EU; Wordpress Fair Package Manager Jun 10, 2025

Show notes

OctoSQL & Vulnerability Data
OctoSQL is a neat tool to query files in different formats using SQL. This can, for example, be used to query the JSON vulnerability files from CISA or NVD and create interesting joins between different files.
https://isc.sans.edu/diary/OctoSQL+Vulnerability+Data/32026
Mirai vs. Wazuh
The Mirai botnet has now been observed exploiting a vulnerability in the open-source EDR tool Wazuh.
https://www.akamai.com/blog/security-research/botnets-flaw-mirai-spreads-through-wazuh-vulnerability
DNS4EU
The European Union created its own public recursive resolver to offer a public resolver compliant with European privacy laws. This resolver is currently operated by ENISA, but the intent is to have a commercial entity operate and support it by a commercial entity.
https://www.joindns4.eu/
WordPress FAIR Package Manager
Recent legal issues around different WordPress-related entities have made it more difficult to maintain diverse sources of WordPress plugins. With WordPress plugins usually being responsible for many of the security issues, the Linux Foundation has come forward to support the FAIR Package Manager, a tool intended to simplify the management of WordPress packages.
https://github.com/fairpm

SANS Stormcast June, June 9th, 2025: Extracting PNG Data; GlueStack Packages Backdoor; MacOS targeted by Clickfix; INETPUB restore script Jun 09, 2025

Show notes

Extracting With pngdump.py
Didier extended his pngdump.py script to make it easier to extract additional data appended to the end of the image file.
https://isc.sans.edu/diary/Extracting%20With%20pngdump.py/32022
16 React Native Packages for GlueStack Backdoored Overnight
16 npm packages with over a million weekly downloads between them were compromised. The compromised packages include a remote admin tool that was seen before in similar attacks.
https://www.aikido.dev/blog/supply-chain-attack-on-react-native-aria-ecosystem
Atomic MacOS Stealer Exploits Clickfix
MacOS users are now also targeted by fake captchas, tricking users into running exploit code.
https://www.cloudsek.com/blog/amos-variant-distributed-via-clickfix-in-spectrum-themed-dynamic-delivery-campaign-by-russian-speaking-hackers
Microsoft INETPUB Script
Microsoft published a simple PowerShell script to restore the inetpub folder in case you removed it by mistake.
https://www.powershellgallery.com/packages/Set-InetpubFolderAcl/1.0

SANS Stormcast Friday, June 6th, 2025: Fake Zoom Clients; Python tarfile vulnerability; HPE Insight Remote Support Patch Jun 06, 2025

Show notes

Be Careful With Fake Zoom Client Downloads
Miscreants are tricking victims into downloading fake Zoom clients (and likely other meeting software) by first sending them fake meeting invites that direct victims to a page that offers malware for download as an update to the Zoom client.
https://isc.sans.edu/diary/Be%20Careful%20With%20Fake%20Zoom%20Client%20Downloads/32014
Python tarfile Vulnerability
Recently, the Python tarfile module introduced a filter option to help mitigate some of the insecure behavior common to software unpacking archives. This filter is, however, not working quite as well as it should.
https://mail.python.org/archives/list/security-announce@python.org/thread/MAXIJJCUUMCL7ATZNDVEGGHUMQMUUKLG/
Hewlett Packard Enterprise Insight Remote Support processAttachmentDataStream Directory Traversal Remote Code Execution Vulnerability
HP fixed, among other vulnerabilities, a critical remote code execution vulnerability in Insight Remote Support (IRS)
https://www.zerodayinitiative.com/advisories/ZDI-25-325/

SANS Stormcast Thursday, June 5th, 2025: Phishing Comment Trick; AWS default logging mode change; Cisco Backdoor Fixed; Infoblox Vulnerability Details Released Jun 05, 2025

Show notes

Phishing e-mail that hides malicious links from Outlook users
Jan found a phishing email that hides the malicious link from Outlook users. The email uses specific HTML comment clauses Outlook interprets to render or not render specific parts of the email s HTML code. Jan suggests that the phishing email is intented to not expose users of
https://isc.sans.edu/diary/Phishing%20e-mail%20that%20hides%20malicious%20link%20from%20Outlook%20users/32010
Amazon changing default logging from blocking to non-blocking
Amazon will change the default logging mode from blocking to non-blocking. Non-blocking logging will not stop the application if logging fails, but may result in a loss of logs.
https://aws.amazon.com/blogs/containers/preventing-log-loss-with-non-blocking-mode-in-the-awslogs-container-log-driver/
Cisco Removes Backdoor
Cisco fixed a Cisco Identity Services Engine on Cloud Platforms Static Credential Vulnerability.
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-aws-static-cred-FPMjUcm7
Infoblox Vulnerability Details disclosed
Details regarding several vulnerabilities recently patched in Infoblox s NetMRI have been made public. In particular an unauthenticated remote code execution issue should be considered critical.
https://rhinosecuritylabs.com/research/infoblox-multiple-cves/

SANS Stormcast Wednesday, June 4th, 2025: vBulletin Exploited; Chrome 0-Day Patch; Roundcube RCE Patch; Multiple HP StoreOnce Vulns Patched Jun 04, 2025

Show notes

vBulletin Exploits CVE-2025-48827, CVE-2025-48828
We do see exploit attempts for the vBulletin flaw disclosed about a week ago. The flaw is only exploitable if vBulltin is run on PHP 8.1, and was patched over a year ago. However, vBulltin never disclosed the type of vulnerability that was patched.
https://isc.sans.edu/diary/vBulletin%20Exploits%20%28CVE-2025-48827%2C%20CVE-2025-48828%29/32006
Google Chrome 0-Day Patched
Google released a security update for Google Chrome patching three flaws. One of these is already being exploited.
https://chromereleases.googleblog.com/
Roundcube Update
Roundcube patched a vulnerability that allows any authenticated user to execute arbitrary code.
https://roundcube.net/news/2025/06/01/security-updates-1.6.11-and-1.5.10
HP Vulnerabilities in StoreOnce
HP patched multiple vulnerabilities in StoreOnce. These issues could lead to remote code execution
https://support.hpe.com/hpesc/public/docDisplay?docId=hpesbst04847en_us&docLocale=en_US

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