Sans Internet Storm Center Daily Network/cyber Security And Information Security Podcast

Help Wanted: What are these odd requests about? An odd request is hitting a number of our honeypots with a somewhat unusual HTTP request header. Please let me know if you no what the request is about. https://isc.sans.edu/forums/diary/Help+Wanted+What+are+these+odd+reuqests+about/32302/ Forta GoAnywhere MFT Vulnerability Forta s GoAnywhere MFT product suffers from a critical deserialization vulnerability. Forta released an advisory disclosing the vulnerability on Thursday. https://www.fortra.com/security/advisories/product-security/fi-2025-012 EDR Freeze A new tool, EDR Freeze, allows regular users to suspend EDR processes. https://www.zerosalarium.com/2025/09/EDR-Freeze-Puts-EDRs-Antivirus-Into-Coma.html

Exploring Uploads in a Dshield Honeypot Environment This guest diary by one of our SANS.edu undergraduate interns shows how to analyze files uploaded to Cowrie https://isc.sans.edu/diary/Exploring%20Uploads%20in%20a%20Dshield%20Honeypot%20Environment%20%5BGuest%20Diary%5D/32296 Sonicwall Breach SonicWall MySonicWall accounts were breached via credential brute forcing https://www.sonicwall.com/support/knowledge-base/mysonicwall-cloud-backup-file-incident/250915160910330 DeepSeek Bias Cloudflare found significant biases in code created by the Chinese AI engine DeepSeek. Code for organizations not aligned with China s politics contained significantly more bugs https://www.washingtonpost.com/technology/2025/09/16/deepseek-ai-security/ Google Chrome 0-day Google fixed an already-exploited vulnerability in Google Chrome https://chromereleases.googleblog.com/2025/09/stable-channel-update-for-desktop_17.html

CTRL-Z DLL Hooking Attackers may use a simple reload trick to overwrite breakpoints left by analysts to reverse malicious binaries. https://isc.sans.edu/diary/CTRL-Z%20DLL%20Hooking/32294 Global Admin in every Entra ID tenant via Actor tokens As part of September s patch Tuesday, Microsoft patched CVE-2025-55241. The discoverer of the vulnerability, Dirk-jan Mollema has published a blog post showing how this vulnerability could have been exploited. https://dirkjanm.io/obtaining-global-admin-in-every-entra-id-tenant-with-actor-tokens/ WatchGuard Firebox iked Out of Bounds Write Vulnerability CVE-2025-9242 WatchGuard patched an out-of-bounds write vulnerability, which could allow an unauthenticated attacker to compromise the devices. https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2025-00015 NVidia Triton Inference Server NVIDIA patched critical vulnerabilities in its Triton Inference Server. https://nvidia.custhelp.com/app/answers/detail/a_id/5691

Why You Need Phishing-Resistant Authentication NOW. The recent compromise of a number of high-profile npmjs.com accounts has yet again shown how dangerous a simple phishing email can be. https://isc.sans.edu/diary/Why%20You%20Need%20Phishing%20Resistant%20Authentication%20NOW./32290 S1ngularity/nx Attackers Strike Again A second wave of attacks has hit over a hundred npm-related GitHub repositories. The updated payload implements a worm that propagates itself to other repositories. https://www.aikido.dev/blog/s1ngularity-nx-attackers-strike-again ChatGPT s Calendar Integration Can Be Exploited to Steal Emails ChatGPT s new MCP integration can be used, via prompt injection, to affect software connected to ChatGPT via MCP. https://www.linkedin.com/posts/eito-miyamura-157305121_we-got-chatgpt-to-leak-your-private-email-activity-7372306174253256704-xoX1/

Apple Updates Apple released major updates for all of its operating systems. In addition to new features, these updates patch 33 different vulnerabilities. https://isc.sans.edu/diary/Apple%20Updates%20Everything%20-%20iOS%20macOS%2026%20Edition/32286 Microsoft End of Life October 14th, support for Windows 10, Exchange 2016, and Exchange 2019 will end. https://support.microsoft.com/en-us/windows/windows-10-support-ends-on-october-14-2025-2ca8b313-1946-43d3-b55c-2b95b107f281#:~:text=As%20a%20reminder%2C%20Windows%2010,one%20that%20supports%20Windows%2011. https://techcommunity.microsoft.com/blog/exchange/t-9-months-exchange-server-2016-and-exchange-server-2019-end-of-support/4366605 Phishing Targeting Rust Developers Rust developers are reporting similar phishing emails as the emails causing the major NPM compromise last week. https://github.com/rust-lang/crates.io/discussions/11889#discussion-8886064 Samsung Patches 0-Day Samsung released its monthly updates for its flagship phones fixing, among other vulnera

Web Searches For Archives Didier observed additional file types being searched for as attackers continue to focus on archive files as they spider web pages https://isc.sans.edu/diary/Web%20Searches%20For%20Archives/32282 FBI Flash Alert: Salesforce Attacks The FBI is alerting users of Salesforce of two different threat actors targeting Salesforce. There are no new vulnerabilities disclosed, but the initial access usually takes advantage of social engineering or leaked data from the Salesdrift compromise. https://www.ic3.gov/CSA/2025/250912.pdf VSCode Cursor Extensions Malware Koe Security unmasked details about a recent malicious cursor extension campaign they call White Cobra. https://www.koi.security/blog/whitecobra-vscode-cursor-extensions-malware BSides Augusta https://bsidesaugusta.org/

DShield SIEM Docker Updates Guy updated the DShield SIEM which graphically summarizes what is happening inside your honeypot. https://isc.sans.edu/diary/DShield%20SIEM%20Docker%20Updates/32276 Again: Sonicwall SSL VPN Compromises The Australian Government s Signals Directorate noted an increase in compromised Sonicwall devices. https://www.cyber.gov.au/about-us/view-all-content/alerts-and-advisories/ongoing-active-exploitation-of-sonicwall-ssl-vpns-in-australia Website Keystroke Logging Many websites log every keystroke, not just data submitted in forms. https://arxiv.org/pdf/2508.19825

BASE64 Over DNS The base64 character set exceeds what is allowable in DNS. However, some implementations will work even with these invalid characters. https://isc.sans.edu/diary/BASE64%20Over%20DNS/32274 Google Chrome Update Google released an update for Google Chrome, addressing two vulnerabilities. One of the vulnerabilities is rated critical and may allow code execution. https://chromereleases.googleblog.com/2025/09/stable-channel-update-for-desktop_9.html Ivanti Updates Ivanti patched a number of vulnerabilities, several of them critical, across its product portfolio. https://forums.ivanti.com/s/article/September-Security-Advisory-Ivanti-Connect-Secure-Policy-Secure-ZTA-Gateways-and-Neurons-for-Secure-Access-Multiple-CVEs Sophos Patches Sophos resolved authentication bypass vulnerability in Sophos AP6 series wireless access point firmware (CVE-2025-10159) https://www.sophos.com/en-us/security-advisories/sophos-sa-20250909-ap6 Apple Introduces Memory Integrity Enforcement With the new hardware promoted

Microsoft Patch Tuesday As part of its September patch Tuesday, Microsoft addressed 177 different vulnerabilities, 86 of which affect Microsoft products. None of the vulnerabilities has been exploited before today. Two of the vulnerabilities were already made public. Microsoft rates 13 of the vulnerabilities are critical. https://isc.sans.edu/diary/Microsoft%20Patch%20Tuesday%20September%202025/32270 Adobe Patches Adobe released patches for nine products, including Adobe Commerce, Coldfusion, and Acrobat. https://helpx.adobe.com/security/security-bulletin.html SAP Patches SAP patched vulnerabilities across its product portfolio. Particularly interesting are a few critical vulnerabilities in Netweaver, one of which scored a perfect 10.0 CVSS score. https://onapsis.com/blog/sap-security-notes-september-2025-patch-day/

Major npm compromise A number of high-profile npm libraries were compromised after developers fell for a phishing email. This compromise affected libraries with a total of hundreds of millions of downloads a week. https://bsky.app/profile/bad-at-computer.bsky.social/post/3lydioq5swk2y https://github.com/orgs/community/discussions/172738 https://github.com/chalk/chalk/issues/656#issuecomment-3266894253 https://www.aikido.dev/blog/npm-debug-and-chalk-packages-compromised HTTP Request Signatures It looks like some search engines and AI bots are starting to use the HTTP request signature. This should make it easier to identify bot traffic. https://isc.sans.edu/diary/HTTP%20Request%20Signatures/32266

From YARA Offsets to Virtual Addresses Xavier explains how to convert offsets reported by YARA into offsets suitable for the use with debuggers. https://isc.sans.edu/diary/From%20YARA%20Offsets%20to%20Virtual%20Addresses/32262 Phishing via JavaScript in SVG Files Virustotal uncovered a Colombian phishing campaign that takes advantage of JavaScript in SVG files. https://blog.virustotal.com/2025/09/uncovering-colombian-malware-campaign.html FreePBX Patches FreePBX released details regarding two vulnerabilities patched last week. One of these vulnerabilities was already actively exploited. https://github.com/FreePBX/security-reporting/security/advisories/GHSA-3r47-p39v-vqqf

Unauthorized Issuance of Certificate for 1.1.1.1 Cloudflare published a blog post with more details regarding the bad 1.1.1.1 certificate that was issued by Fina. https://blog.cloudflare.com/unauthorized-issuance-of-certificates-for-1-1-1-1/ AI Model Namespace Reuse Deleted accounts on Huggingface can be taken over by other entities unrelated to the original owner. https://unit42.paloaltonetworks.com/model-namespace-reuse/ macOS vulnerability allowed Keychain and iOS app decryption without a password Excessive entitlements for the gcore binary facilitated access to key material that was sufficient to access secrets stored in Apple s keychain. https://www.helpnetsecurity.com/2025/09/04/macos-gcore-vulnerability-cve-2025-24204/

Exploit Attempts for Dassault DELMIA Apriso. CVE-2025-5086 Our honeypots detected attacks against the manufacturing management system DELMIA Apriso. The deserialization vulnerability was patched in June and is one of a few critical vulnerabilities patched in recent months. https://isc.sans.edu/diary/Exploit%20Attempts%20for%20Dassault%20DELMIA%20Apriso.%20CVE-2025-5086/32256 Android Bulletin Google released its September update, fixing two already-exploited privilege escalation flaws and some remote code execution issues. https://source.android.com/docs/security/bulletin/2025-09-01 Mis-issued Certificates for SAN iPAddress:1.1.1.1 by Fina RDC 2020 Certificate authority Fina RDC issues a certificate for Cloudflare s IP address 1.1.1.1 https://groups.google.com/a/mozilla.org/g/dev-security-policy/c/SgwC1QsEpvc

A Quick Look at Sextortion at Scale Jan analyzed 1900 different sextortion messages using 205 different Bitcoin addresses to look at the success rate, lifetime, and other metrics defining these campaigns. https://isc.sans.edu/diary/A%20quick%20look%20at%20sextortion%20at%20scale%3A%201%2C900%20messages%20and%20205%20Bitcoin%20addresses%20spanning%20four%20years/32252 Azure AD Client Secret Leak Attackers are stealing Azure AD client secrets from websites that are leaving them exposed. https://www.resecurity.com/blog/article/azure-ad-client-secret-leak-the-keys-to-cloud Covert Channel via ICMP and DNS A new bot combines ICMP and DNS in new ways for covert communication. The DNS requests use domains with a fixed prefix followed by a base64 encoded command, and the ICMP echo request packets include commands as a payload. https://blog.xlab.qianxin.com/mystrodx_covert_dual-mode_backdoor_en/ Official Release of Critical FreePBX Patch Sangoma has announced that the experimental patch released for the exploited Free

pdf-parser: All Streams Didier released a new version of pdf-parser.py. This version fixes a problem with dumping all filtered streams. https://isc.sans.edu/diary/pdf-parser%3A%20All%20Streams/32248 Salesloft Drift Putting OAuth Tokens at Risk OAuth tokens used by Salesloft Drift users to provide access to integrations with Salesforce, Google Workspace, and others have been compromised and heavily abused for additional compromise and large-scale data exfiltration from exposed services. https://cloud.google.com/blog/topics/threat-intelligence/data-theft-salesforce-instances-via-salesloft-drift Velociraptor incident response tool abused for remote access Attackers are using the open source incident response tool Velociraptor to access remote systems in breached networks. Tools like Velocitraptor are ideal for attackers to perform lateral movement. https://news.sophos.com/en-us/2025/08/26/velociraptor-incident-response-tool-abused-for-remote-access/ Default Password in NeuVector (Rancher Desktop) SuSE fixed a

Increasing Searches for ZIP Files Attackers are scanning our honeypots more and more for .zip files. They are looking for backups of credential files and the like left behind by careless administrators and developers. https://isc.sans.edu/diary/Increasing%20Searches%20for%20ZIP%20Files/32242 FreePBX Vulnerability An upatched vulnerability in FreePBX is currently being exploited. FreePBX offers mitigation advice and has also just released a beta patch. https://community.freepbx.org/t/security-advisory-please-lock-down-your-administrator-access/107203 Passwordstate Vulnerability Clickstudios patched an authentication bypass vulnerability in its password manager, Passwordstate. The vulnerability can be used to access the emergency password page. https://www.clickstudios.com.au/passwordstate-changelog.aspx

Interesting Technique to Launch a Shellcode Xavier came across malware that PowerShell and the CallWindowProcA() API to launch code. https://isc.sans.edu/diary/Interesting%20Technique%20to%20Launch%20a%20Shellcode/32238 NX Compromised to Steal Wallets and Credentials The popular open source NX build package was compromised. Code was added that uses the help of AI tools like Claude and Gemini to steal credentials from affected systems https://semgrep.dev/blog/2025/security-alert-nx-compromised-to-steal-wallets-and-credentials/ Countering Chinese State-Sponsored Actors Compromise of Networks Worldwide to Feed the Global Espionage System Several law enforcement and cybersecurity agencies worldwide collaborated to release a detailed report on the recent Volt Typhoon incident. https://www.cisa.gov/news-events/cybersecurity-advisories/aa25-239a

Getting a Better Handle on International Domain Names and Punycode International Domain names can be used for phishing and other attacks. One way to identify suspect names is to look for mixed script use. https://isc.sans.edu/diary/Getting%20a%20Better%20Handle%20on%20International%20Domain%20Names%20and%20Punycode/32234 Citrix Netscaler Vulnerabilities CVE-2025-7775, CVE-2025-7776 and CVE-2025-8424 Citrix patched three vulnerabilities in Netscaler. One is already being exploited https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX694938&articleTitle=NetScaler_ADC_and_NetScaler_Gateway_Security_Bulletin_for_CVE_2025_7775_CVE_2025_7776_and_CVE_2025_8424 git vulnerability exploited (CVE-2025-48384) A git vulnerability patched in early July is now being exploited https://github.com/git/git/security/advisories/GHSA-vwqx-4fm8-6qc9

Reading Location Position Value in Microsoft Word Documents Jessy investigated how Word documents store the last visited document location in the registry. https://isc.sans.edu/diary/Reading%20Location%20Position%20Value%20in%20Microsoft%20Word%20Documents/32224 Weaponizing image scaling against production AI systems AI systems often downscale images before processing them. An attacker can create a harmless looking image that would reveal text after downscaling leading to prompt injection https://blog.trailofbits.com/2025/08/21/weaponizing-image-scaling-against-production-ai-systems/ IBM Jazz Team Server Vulnerability CVE-2025-36157 IBM patched a critical vulnerability in its Jazz Team Server https://www.ibm.com/support/pages/node/7242925

The end of an era: Properly formatted IP addresses in all of our data. When initiall designing DShield, addresses were zero padded , an unfortunate choice. As of this week, datafeeds should no longer be zero padded . https://isc.sans.edu/diary/The%20end%20of%20an%20era%3A%20Properly%20formated%20IP%20addresses%20in%20all%20of%20our%20data./32228 .desktop files used in an attack against Linux Desktops Pakistani attackers are using .desktop files to target Indian Linux desktops. https://www.cyfirma.com/research/apt36-targets-indian-boss-linux-systems-with-weaponized-autostart-files/ Malicious Go Module Disguised as SSH Brute Forcer Exfiltrates Credentials via Telegram A go module advertising its ability to quickly brute force passwords against random IP addresses, has been used to exfiltrate credentials from the person running the module. https://socket.dev/blog/malicious-go-module-disguised-as-ssh-brute-forcer-exfiltrates-credentials Limiting Onmicrosoft Domain Usage for Sending Emails Microsoft is limiting