A brief daily summary of what is important in information security. The podcast is published every weekday and designed to get you ready for the day with a brief, usually 5 minutes long summary of current network security related events. The content is late breaking, educational and based on listener input as well as on input received by the SANS Internet Storm Center. You may submit questions and comments via our contact form at https://isc.sans.edu/contact.html .
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Johannes B Ullrich Podcasts
Daily cybersecurity news for practitioners. Vulnerabilities, defenses, threats, network security insight, research and more to make you sound smarter as you get to the office in the morning. New each weekday.
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SANS Stormcast Thursday, June 12th, 2025: Quasar RAT; Windows 11 24H2 Delay; SMB Client Vuln PoC; Connectwise Signing Keys; KDE Telnet code exec
6:27
6:27
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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…
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SANS Stormcast Thursday, June 12th, 2025: Quasar RAT; Windows 11 24H2 Delay; SMB Client Vuln PoC; Connectwise Signing Keys; KDE Telnet code exec (#)
6:28
6:28
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6:28
SANS Stormcast Thursday, June 12th, 2025: Quasar RAT; Windows 11 24H2 Delay; SMB Client Vuln PoC; Connectwise Signing Keys; KDE Telnet code exec 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…
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SANS Stormcast Wednesday, June 11th, 2025: Microsoft Patch Tuesday; Acrobat Patches
6:58
6:58
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6:58
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 relea…
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SANS Stormcast Wednesday, June 11th, 2025: Microsoft Patch Tuesday; Acrobat Patches (#)
6:59
6:59
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6:59
SANS Stormcast Wednesday, June 11th, 2025: Microsoft Patch Tuesday; Acrobat Patches 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/dia…
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SANS Stormcast June, Tuesday, June 10th, 2025: Octosql; Mirai vs. Wazuh DNS4EU; Wordpress Fair Package Manager
6:09
6:09
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6:09
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 obser…
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SANS Stormcast June, Tuesday, June 10th, 2025: Octosql; Mirai vs. Wazuh DNS4EU; Wordpress Fair Package Manager (#)
6:10
6:10
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6:10
SANS Stormcast June, Tuesday, June 10th, 2025: Octosql; Mirai vs. Wazuh DNS4EU; Wordpress Fair Package Manager 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. …
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SANS Stormcast June, June 9th, 2025: Extracting PNG Data; GlueStack Packages Backdoor; MacOS targeted by Clickfix; INETPUB restore script
5:43
5:43
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5:43
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 compro…
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SANS Stormcast June, June 9th, 2025: Extracting PNG Data; GlueStack Packages Backdoor; MacOS targeted by Clickfix; INETPUB restore script (#)
5:43
5:43
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5:43
SANS Stormcast June, June 9th, 2025: Extracting PNG Data; GlueStack Packages Backdoor; MacOS targeted by Clickfix; INETPUB restore script 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…
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SANS Stormcast Friday, June 6th, 2025: Fake Zoom Clients; Python tarfile vulnerability; HPE Insight Remote Support Patch
5:01
5:01
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5:01
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%20Cl…
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SANS Stormcast Friday, June 6th, 2025: Fake Zoom Clients; Python tarfile vulnerability; HPE Insight Remote Support Patch (#)
5:01
5:01
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5:01
SANS Stormcast Friday, June 6th, 2025: Fake Zoom Clients; Python tarfile vulnerability; HPE Insight Remote Support Patch 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 offer…
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SANS Stormcast Thursday, June 5th, 2025: Phishing Comment Trick; AWS default logging mode change; Cisco Backdoor Fixed; Infoblox Vulnerability Details Released
5:26
5:26
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5:26
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://is…
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SANS Stormcast Thursday, June 5th, 2025: Phishing Comment Trick; AWS default logging mode change; Cisco Backdoor Fixed; Infoblox Vulnerability Details Released (#)
5:26
5:26
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5:26
SANS Stormcast Thursday, June 5th, 2025: Phishing Comment Trick; AWS default logging mode change; Cisco Backdoor Fixed; Infoblox Vulnerability Details Released 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 Outloo…
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SANS Stormcast Wednesday, June 4th, 2025: vBulletin Exploited; Chrome 0-Day Patch; Roundcube RCE Patch; Multiple HP StoreOnce Vulns Patched
7:25
7:25
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7:25
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%…
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SANS Stormcast Wednesday, June 4th, 2025: vBulletin Exploited; Chrome 0-Day Patch; Roundcube RCE Patch; Multiple HP StoreOnce Vulns Patched (#)
7:25
7:25
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7:25
SANS Stormcast Wednesday, June 4th, 2025: vBulletin Exploited; Chrome 0-Day Patch; Roundcube RCE Patch; Multiple HP StoreOnce Vulns Patched 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…
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SANS Stormcast Tuesday, June 3rd, 2025: Windows SSH C2; Google Removes CAs from trusted list; MSFT issues Emergency Patch to fix Crash issue; Qualcom Adreno GPU 0-day
6:06
6:06
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6:06
Simple SSH Backdoor Xavier came across a simple SSH backdoor taking advantage of the ssh client preinstalled on recent Windows systems. The backdoor is implemented via an SSH configuration file that instructs the SSH client to connect to a remote system and forward a shell on a random port. This will make the shell accessible to anybody able to con…
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SANS Stormcast Tuesday, June 3rd, 2025: Windows SSH C2; Google Removes CAs from trusted list; MSFT issues Emergency Patch to fix Crash issue; Qualcom Adreno GPU 0-day (#)
6:07
6:07
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6:07
SANS Stormcast Tuesday, June 3rd, 2025: Windows SSH C2; Google Removes CAs from trusted list; MSFT issues Emergency Patch to fix Crash issue; Qualcom Adreno GPU 0-day Simple SSH Backdoor Xavier came across a simple SSH backdoor taking advantage of the ssh client preinstalled on recent Windows systems. The backdoor is implemented via an SSH configur…
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SANS Stormcast Monday, June 2nd, 2025: PNG with RAT; Cisco IOS XE WLC Exploit; vBulletin Exploit
5:42
5:42
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5:42
A PNG Image With an Embedded Gift Xavier shows how Python code attached to a PNG image can be used to implement a command and control channel or a complete remote admin kit. https://isc.sans.edu/diary/A+PNG+Image+With+an+Embedded+Gift/31998 Cisco IOS XE WLC Arbitrary File Upload Vulnerability (CVE-2025-20188) Analysis Horizon3 analyzed a recently p…
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SANS Stormcast Monday, May 2nd, 2025: PNG with RAT; Cisco IOS XE WLC Exploit; vBulletin Exploit (#)
5:42
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5:42
SANS Stormcast Monday, May 2nd, 2025: PNG with RAT; Cisco IOS XE WLC Exploit; vBulletin Exploit A PNG Image With an Embedded Gift Xavier shows how Python code attached to a PNG image can be used to implement a command and control channel or a complete remote admin kit. https://isc.sans.edu/diary/A+PNG+Image+With+an+Embedded+Gift/31998 Cisco IOS XE …
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SANS Stormcast Friday, May 30th 2025: Alternate Data Streams; Connectwise Breach; Google Calendar C2;
13:47
13:47
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Alternate Data Streams: Adversary Defense Evasion and Detection Good Primer of alternate data streams and how they are abused, as well as how to detect and defend against ADS abuse. https://isc.sans.edu/diary/Alternate%20Data%20Streams%20%3F%20Adversary%20Defense%20Evasion%20and%20Detection%20%5BGuest%20Diary%5D/31990 Connectwise Breach Affects Scr…
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SANS Stormcast Friday, May 30th 2025: Alternate Data Streams; Connectwise Breach; Google Calendar C2; (#)
13:47
13:47
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13:47
SANS Stormcast Friday, May 30th 2025: Alternate Data Streams; Connectwise Breach; Google Calendar C2; Alternate Data Streams: Adversary Defense Evasion and Detection Good Primer of alternate data streams and how they are abused, as well as how to detect and defend against ADS abuse. https://isc.sans.edu/diary/Alternate%20Data%20Streams%20%3F%20Adve…
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SANS Stormcast Thursday May 29th 2025: LLM Assisted Analysis; MSP Ransomware; Everetz Vulnerability
6:10
6:10
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6:10
Exploring a Use Case of Artificial Intelligence Assistance with Understanding an Attack Jennifer Wilson took a weird string found in a recent honeypot sample and worked with ChatGPT to figure out what it is all about. https://isc.sans.edu/diary/%5BGuest%20Diary%5D%20Exploring%20a%20Use%20Case%20of%20Artificial%20Intelligence%20Assistance%20with%20U…
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SANS Stormcast Thursday May 29th 2025: LLM Assisted Analysis; MSP Ransomware; Everetz Vulnerability (#)
6:11
6:11
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SANS Stormcast Thursday May 29th 2025: LLM Assisted Analysis; MSP Ransomware; Everetz Vulnerability Exploring a Use Case of Artificial Intelligence Assistance with Understanding an Attack Jennifer Wilson took a “weird string” found in a recent honeypot sample and worked with ChatGPT to figure out what it is all about. https://isc.sans.edu/diary/%5B…
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SANS Stormcast Wednesday May 28th 2025: Securing authorized_keys; ADAuditPlus SQL Injection; Dero Miner vs Docker API
6:37
6:37
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6:37
SSH authorized_keys File One of the most common techniques used by many bots is to add rogue keys to the authorized_keys file, implementing an SSH backdoor. Managing these files and detecting unauthorized changes is not hard and should be done if you operate Unix systems. https://isc.sans.edu/diary/Securing%20Your%20SSH%20authorized_keys%20File/319…
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SANS Stormcast Wednesday May 28th 2025: Securing authorized_keys; ADAuditPlus SQL Injection; Dero Miner vs Docker API (#)
6:38
6:38
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SANS Stormcast Wednesday May 28th 2025: Securing authorized_keys; ADAuditPlus SQL Injection; Dero Miner vs Docker API SSH authorized_keys File One of the most common techniques used by many bots is to add rogue keys to the authorized_keys file, implementing an SSH backdoor. Managing these files and detecting unauthorized changes is not hard and sho…
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SANS Stormcast Tuesday, May 27th 2025: SVG Steganography; Fortinet PoC; GitLab Duo Prompt Injection
7:13
7:13
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SVG Steganography Steganography is not only limited to pixel-based images but can be used to embed messages into vector-based formats like SVG. https://isc.sans.edu/diary/SVG%20Steganography/31978 Fortinet Vulnerability Details CVE-2025-32756 Horizon3.ai shows how it was able to find the vulnerability in Fortinet s products, and how to possibly exp…
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