Guy has a B.A. (IT) from University of Quebec and holds the prestigious GIAC Security Expert (GSE) certification as well as the GIAC GSEC(G), GCIA(G), GCIH(G), GCUX(G), GCFA, GPEN certifications.

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Recent Diaries:

• Linux LOLBins Applications Available in Windows
• McAfee Fake Antivirus Phishing Campaign is Back!
• Windows Malware with VHD Extension
• Malware - Covid Vaccination Supplier Declaration
• Phishing Word Documents with Suspicious URL

Recent Diaries:

• Is this traffic bAD?
• Update: mac-robber.py
• Strange goings on with port 37
• Wireshark 3.4.6 (and 3.2.14) released
• So where did those Satori attacks come from?

Recent Diaries:

• obama224 distribution Qakbot tries .vhd (virtual hard disk) images
• Who put the "Dark" in DarkVNC?
• sczriptzzbn inject pushes malware for NetSupport RAT
• Monster Libra (TA551/Shathak) --> IcedID (Bokbot) --> Cobalt Strike & DarkVNC
• Brazil malspam pushes Astaroth (Guildma) malware

Recent Diaries:

• TLP 2.0 is here
• EternalBlue 5 years after WannaCry and NotPetya
• HTML phishing attachments - now with anti-analysis features
• Do you want 30 BTC? Nothing is easier (or cheaper) in this phishing campaign...
• What is the simplest malware in the world?

Jesse La Grew has been an IT professional within higher education for over 20 years. He holds a variety of GIAC certifications including the GDSA, GCCC, GCFA, GCFE, GCIA, GPYC, GSOC, GCIH, GSEC, GISF, GCTI and GSTRT and is also a CISSP. He recently received his Bachelor's Degree at SANS Technology Institute and is progressing through his Master's program at the same institution. Jesse's background in IT started in a desktop support role. This transitioned into a cyber security focus when becoming involved in building and supporting environments meeting PCI and FISMA compliance standards. He currently works a Security Architect at Madison College.

Recent Diaries:

• Extracting 'HTTP CONNECT' Requests with Python

Renato Marinho is Chief Research Officer at Morphus Labs. His journey in the area began in 2001, when he created Nettion, one of the first firewalls to use the contemporary UTM (Unified Threat Management) concept. Experienced in cyber security, Marinho was internationally recognized in 2016 by his research that unveiled Mamba, the first full disk encryption ransomware. At Morphus Labs, he oversees research, innovation and development of new products. Master and PhD candidate in Applied Informatics, he is also professor at University of Fortaleza teaching Computer Forensics in the post-graduate course. He is also a speaker having presented at Ignite Cybersecurity Conference, BSides Delaware, BSides Vienna, WSKS Portugal and Brazilian CSIRTs Forum.

Recent Diaries:

• Log4Shell campaigns are using Nashorn to get reverse shell on victim's machines
• Microsoft November 2022 Patch Tuesday
• Microsoft September 2022 Patch Tuesday
• Microsoft August 2022 Patch Tuesday
• Microsoft July 2022 Patch Tuesday

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Recent Diaries:

• Chainsaw: Hunt, search, and extract event log records
• EPSScall: An Exploit Prediction Scoring System App
• Log4j 2 Security Vulnerabilities Update Guide
• LotL Classifier tests for shells, exfil, and miners
• Adversary Simulation with Sim

Xavier Mertens is a freelance security consultant based in Belgium. Xavier's own company (https://xameco.be) offers services like incident handling, forensic, SOC activities, and pentesting. He holds GCIA, GFCE, GCFA, GXPN, GREM, GDAT, GNFA, GCTI, GPYC SANS certifications but also CISSP, and CISA. Xavier is a SANS Certified Instructor (FOR610 - Malware Analysis and Reverse Engineering). His blog about security is https://blog.rootshell.be and he is co-organizer of the BruCON security conference (http://www.brucon.org).

Recent Diaries:

• Attackers Keep Phishing Victims Under Stress
• Do you collect "Observables" or "IOCs"?
• Another Script-Based Ransomware
• Remcos Downloader with Unicode Obfuscation
• C2 Communications Through outlook.com

Mr. Santander Pelaez currently serves as the Chief Information Security Officer of Puntos Colombia S.A.S. . in Medellin,Colombia. His areas of interest are Intrusion Detection, Computer Forensics, Incident Response, SCADA Security, Network Design and cyberwarfare.

Recent Diaries:

• More packet fu with zeek
• Creating patched binaries for pentesting purposes
• Performing deception to OS Fingerprint (Part 1: nmap)
• SNMP service: still opened to the public and still queried by attackers
• Enumerating office365 users

Didier Stevens (Microsoft MVP Consumer Security) holds many certifications from SANS, Microsoft, Cisco, ... He is a Senior Analyst (NVISO https://www.nviso.be). Didier started his own company in 2012 to provide IT security training services (http://DidierStevensLabs.com). You can find his open source security tools on his IT security related blog at https://blog.DidierStevens.com.

Recent Diaries:

• VLC's Check For Updates: No Updates?
• Finger.exe LOLBin
• Extracting Information From "logfmt" Files With CyberChef
• Update: IPv4 Address Representations
• IPv4 Address Representations

Yee Ching is currently a Ph.D. student at ASSET (Automated Systems SEcuriTy) Research Group in the Singapore University of Technology and Design (SUTD) under the Information Systems Technology and Design (ISTD) Pillar. He was a recipient of the SG: Digital (SG:D) Postgraduate Scholarship program from Infocomm Media Development Authority (IMDA), and won the Cybersecurity Awards in 2019 under the Professional category for his contributions to the Singapore information security industry. Yee Ching is a SANS Lethal Forensicator and also serves as a Committee Member in the Association of Information Security Professionals (AiSP). For more information, please visit https://poppopretn.com/aboutme/.

Recent Diaries:

• An Analysis of a Discerning Phishing Website
• ctx Python Library Updated with "Extra" Features
• Phishing Direct Messages via Discord
• Revisiting BrakTooth: Two Months Later
• Multiple Apple Patches for October 2021

Dr. Johannes Ullrich is the Dean of Research and a faculty member of the SANS Technology Institute. In November of 2000, Johannes started the DShield.org project, which he later integrated into the Internet Storm Center. His work with the Internet Storm Center has been widely recognized. In 2004, Network World named him one of the 50 most powerful people in the networking industry. Secure Computing Magazine named him in 2005 one of the Top 5 influential IT security thinkers. His research interests include IPv6, Network Traffic Analysis and Secure Software Development. Johannes is regularly invited to speak at conferences and has been interviewed by major publications, radio as well as TV stations. He is a member of the SANS Technology Institute's Faculty and Administration as well as Curriculum and Long Range Planning Committee. As chief research officer for the SANS Institute, Johannes is currently responsible for the GIAC Gold program. Prior to working for SANS, Johannes worked as a lead support engineer for a Web development company and as a research physicist. Johannes holds a PhD in Physics from SUNY Albany and is located in Jacksonville, Florida. More Details: http://www.linkedin.com/in/johannesullrich

Recent Diaries:

• Mirai Botnet and Gafgyt DDoS Team Up Against SOHO Routers.
• What's the deal with these router vulnerabilities?
• Identifying Groups of "Bot" Accounts on LinkedIn
• Ukraine Themed Twitter Spam Pushing iOS Scareware
• Happy 22nd Birthday DShield.org!

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Recent Diaries:

• Breakpoints in Burp
• NMAP without NMAP - Port Testing and Scanning with PowerShell
• Taking Apart URL Shorteners
• A "DHCP is Broken" story, and a Blast from the Past (or should I say "Storm" from the past)
• It's New Phone Day! Time to migrate your MFA!

Recent Diaries:

• New Windows Print Spooler Vulnerability - CVE-2021-34481
• Mitre CWE - Common Weakness Enumeration
• Quick and dirty Python: nmap
• Quick and dirty Python: masscan
• Important Apple Updates

Recent Diaries:

• Supersizing your DUO and 365 Integration
• Preventing ISO Malware
• Xmount for Disk Images
• Elastalert with Sigma
• Pi Zero HoneyPot

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Recent Diaries:

• Critical vulnerability in Splunk Enterprise?s deployment server functionality
• Local privilege escalation vulnerability in polkit's pkexec (CVE-2021-4034)
• RCE in log4j, Log4Shell, or how things can get bad quickly
• Active Directory Certificate Services (ADCS - PKI) domain admin vulnerability
• Summer of SAM - incorrect permissions on Windows 10/11 hives