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Do you often wonder what’s the best way to architect, upgrade, or configure your monitoring solution? The BMC Performance and Availability Business Unit is providing a series of best practices content for its BMC ProactiveNet Performance Management (BPPM) and TrueSight Infrastructure Management solutions. Content delivered in each session gives guidance for specific areas of the solution and functionality for the releases by version. Each recording is designed to provide a solid foundation f ...
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Do you often wonder what’s the best way to architect, upgrade, or configure your capacity solution? The BMC Performance and Availability Business Unit is providing a series of best practices content for its BMC Capacity Optimization (BCO) and TrueSight Capacity Optimization (TSCO) solutions. Content delivered in each session gives guidance for specific areas of the solution and functionality for the releases by version. Each recording is designed to provide a solid foundation for success and ...
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The Develop[Her] Show is a career development podcast for tech women by tech women. In each episode Lauren Hasson, Founder of Develop[Her], host, and a technical woman herself, interviews leading tech woman about their careers and lessons learned to peel back the curtain and show you what it really takes to forge a path in the tech world and to be the CEO of your own career.You don’t need to dive in blind. Instead, use lessons shared in The Show as vehicles to earn more, gain more influence, ...
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Example of a Payload Delivered Through Steganography Xavier and Didier published two diaries this weekend, building on each other. First, Xavier showed an example of an image being used to smuggle an executable past network defenses, and second, Didier showed how to use his tools to extract the binary. https://isc.sans.edu/diary/Example%20of%20a%20…
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Attacks against Teltonika Networks SMS Gateways Attackers are actively scanning for SMS Gateways. These attacks take advantage of default passwords and other commonly used passwords. https://isc.sans.edu/diary/Attacks%20against%20Teltonika%20Networks%20SMS%20Gateways/31888 Commvault Vulnerability CVE-2205-34028 Commvault, about a week ago, publishe…
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Honeypot Iptables Maintenance and DShield-SIEM Logging In this diary, Jesse is talking about some of the tasks to maintain a honeypot, like keeping filebeats up to date and adjusting configurations in case your dynamic IP address changes https://isc.sans.edu/diary/Honeypot%20Iptables%20Maintenance%20and%20DShield-SIEM%20Logging/31876 XRPL.js Compro…
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xorsearch.py: Ad Hoc YARA Rules Adhoc YARA rules allow for easy searches using command line arguments without having to write complete YARA rules for simple use cases like string and regex searches https://isc.sans.edu/diary/xorsearch.py%3A%20%22Ad%20Hoc%20YARA%20Rules%22/31856 Google Spoofed via DKIM Replay Attack DKIM replay attacks are a known i…
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It's 2025, so why are malicious advertising URLs still going strong? Phishing attacks continue to take advantage of Google s advertising services. Sadly, this is still the case for obviously malicious links, even after various anti-phishing services flag the URL. https://isc.sans.edu/diary/It%27s%202025...%20so%20why%20are%20obviously%20malicious%2…
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Microsoft Entra User Lockout Multiple organizations reported widespread alerts and account lockouts this weekend from Microsoft Entra. The issue is caused by a new feature Microsoft enabled. This feature will lock accounts if Microsoft believes that the password for the account was compromised. https://www.bleepingcomputer.com/news/microsoft/widesp…
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RedTail: Remnux and Malware Management A description showing how to set up a malware analysis in the cloud with Remnux and Kasm. RedTail is a sample to illustrate how the environment can be used. https://isc.sans.edu/diary/RedTail%2C%20Remnux%20and%20Malware%20Management%20%5BGuest%20Diary%5D/31868 Critical Erlang/OTP SSH Vulnerability Researchers …
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Apple Updates Apple released updates for iOS, iPadOS, macOS, and VisionOS. The updates fix two vulnerabilities which had already been exploited against iOS. https://isc.sans.edu/diary/Apple%20Patches%20Exploited%20Vulnerability/31866 Oracle Updates Oracle released it quarterly critical patch update. The update addresses 378 security vulnerabilities…
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Online Services Again Abused to Exfiltrate Data Attackers like to abuse free online services that can be used to exfiltrate data. From the originals , like pastebin, to past favorites like anonfiles.com. The latest example is gofile.io. As a defender, it is important to track these services to detect exfiltration early https://isc.sans.edu/diary/On…
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xorsearch Update Diedier updated his "xorsearch" tool. It is now a python script, not a compiled binary, and supports Yara signatures. With Yara support also comes support for regular expressions. https://isc.sans.edu/diary/xorsearch.py%3A%20Searching%20With%20Regexes/31854 Shorter Lived Certificates The CA/Brower Forum passed an update to reduce t…
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Exploit Attempts for Recent Langflow AI Vulnerability (CVE-2025-3248) After spotting individaul attempts to exploit the recent Langflow vulnerability late last weeks, we now see more systematic internet wide scans attempting to verify the vulnerability. https://isc.sans.edu/forums/diary/Exploit+Attempts+for+Recent+Langflow+AI+Vulnerability+CVE20253…
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Network Infraxploit Our undergraduate intern, Matthew Gorman, wrote up a walk through of CVE-2018-0171, an older Cisco vulnerability, that is still actively being exploited. For example, VOLT TYPHOON recently exploited this problem. https://isc.sans.edu/diary/Network+Infraxploit+Guest+Diary/31844 Windows Update Issues / Windows 10 Update Microsoft …
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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. https://isc.sans.edu/diary/Obfuscated%20Malicious%20Python%20Scripts%20with%20PyArmor/31840 CenterStack RCE CVE-2025-30406 Glad…
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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 products. In particular important are patches for Coldfusi…
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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…
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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 v…
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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%20Mea…
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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%22t12…
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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 wer…
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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…
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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://is…
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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…
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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,…
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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 te…
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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 ma…
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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 http…
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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 vulner…
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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 i…
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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 mu…
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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/Static%20Analysis%20of%20GUID%20Encoded%20Shellcode/31774 SAMLStorm: Critical Authenticatio…
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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://isc.sans.edu/diary/Mirai%20Bot%20now%20incroporating%20%28malformed%3F%29%20DrayTek%20Vigor%20R…
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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%20Stored%20in%20DShield%20SIEM/31764 Apache Camel Vulnerability Apache released…
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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 to trigger the vulnerability as Log4j logs the username https://isc.sans.edu/diary/Scans%20for%20VMWare%20Hy…
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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 Apple released an update to address a single, alr…
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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 Switches Moxa in January first releast an update to address a fr…
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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 Tarlogic revealed several "backdoors" or undoc…
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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/2025/03/stable-channel-update-for-desktop.html https://www.reddit.com/r/youtube/comments/1j2…
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DShield Traffic Analysis using ELK The "DShield SIEM" includes an ELK dashboard as part of the Honeypot. Learn how to find traffic of interest with this tool. https://isc.sans.edu/diary/DShield%20Traffic%20Analysis%20using%20ELK/31742 Zen and the Art of Microcode Hacking Google released details, including a proof of concept exploit, showing how to …
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Romanian Distillery Scanning for SMTP Credentials A particular attacker expanded the scope of their leaked credential file scans. In addition to the usual ".env" style files, it is not looking for specific SMTP related credential files. https://isc.sans.edu/diary/Romanian%20Distillery%20Scanning%20for%20SMTP%20Credentials/31736 Tool Updates: mac-ro…
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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 …
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Common Crawl includes Common Leaks The "Common Crawl" dataset, a large dataset created by spidering website, contains as expected many API keys and other secrets. This data is often used to train large language models https://trufflesecurity.com/blog/research-finds-12-000-live-api-keys-and-passwords-in-deepseek-s-training-data Github Repositories E…
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Njrat Compaign Using Microsoft dev Tunnels: A recent version of the Njrat remote admin tool is taking advantage of Microsoft's developer tunnels (devtunnels.ms) as a command and control channel. https://isc.sans.edu/diary/Njrat%20Campaign%20Using%20Microsoft%20Dev%20Tunnels/31724 NrootTag Apple FindMy Abuse Malware could use a weakness in the keys …
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Attacker of of Ephemeral Ports Attackers often use ephermeral ports to reach out to download additional resources or exfiltrate data. This can be used, with care, to detect possible compromises. https://isc.sans.edu/diary/%5BGuest%20Diary%5D%20Malware%20Source%20Servers%3A%20The%20Threat%20of%20Attackers%20Using%20Ephemeral%20Ports%20as%20Service%2…
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Massive Botnet Targets M365 with Password Spraying A large botnet is targeting service accounts in M365 with credentials stolen by infostealer malware. https://securityscorecard.com/wp-content/uploads/2025/02/MassiveBotnet-Report_022125_03.pdf Mixing up Public and Private Keys in OpenID The complex OpenID specificiation and the flexibility it suppo…
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Unfurl Update Released Unfurl released an Update fixing a few bugs and adding support to decode BlueSky URLs. https://isc.sans.edu/diary/Unfurl%20v2025.02%20released/31716 Google Confirms GMail To Ditch SMS Code Authentication Google no longer considers SMS authentication save enough for GMail. Instead, it pushes users to use Passkeys, or QR code b…
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Tool Update: Sigs.py Jim updates sigs.py. The tool verifies hashes for files and automatically recognizes what hash is used. https://isc.sans.edu/diary/Tool%20update%3A%20sigs.py%20-%20added%20check%20mode/31706 Google Announcing Quantum Safe Digital Signatures in Cloud KMS Google announced the option to use quantum safe digital signatures for its …
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Using ES|QL In Kibana to Query DShield Honeypot Logs Using the "Elastic Search Piped Query Language" to query DShield honeypot logs https://isc.sans.edu/diary/Using%20ES%7CQL%20in%20Kibana%20to%20Queries%20DShield%20Honeypot%20Logs/31704 Mongoose Flaws Put MongoDB at risk The Object Direct Mapping library Mongoose suffers from an injection vulnerab…
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XWorm Cocktail: A Mix of PE data with PowerShell Code Quick analysis of an interesting XWrom sample with powershell code embedded inside an executable https://isc.sans.edu/diary/XWorm+Cocktail+A+Mix+of+PE+data+with+PowerShell+Code/31700 Microsoft's Majorana 1 Chip Carves New Path for Quantum Computing Microsoft announced a breack through in Quantum…
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ModelScan: Protection Against Model Serialization Attacks ModelScan is a tool to inspect AI models for deserialization attacks. The tool will detect suspect commands and warn the user. https://isc.sans.edu/diary/ModelScan%20-%20Protection%20Against%20Model%20Serialization%20Attacks/31692 OpenSSH MitM and DoS Vulnerabilities OpenSSH Patched two vuln…
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My Very Personal Guidance and Strategies to Protect Network Edge Devices A quick summary to help you secure edge devices. This may be a bit opinionated, but these are the strategies that I find work and are actionable. https://isc.sans.edu/diary/My%20Very%20Personal%20Guidance%20and%20Strategies%20to%20Protect%20Network%20Edge%20Devices/31660 Postg…
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