Diaries by Keyword - SANS Internet Storm Center

Handler on Duty: Xavier Mertens

Threat Level: green

Date	Author	Title
2025-07-07	Xavier Mertens	What's My (File)Name?
2025-06-11	Guy Bruneau	Automated Tools to Assist with DShield Honeypot Investigations [Guest Diary]
2025-05-28	Guy Bruneau	Alternate Data Streams ? Adversary Defense Evasion and Detection [Guest Diary]
2025-04-23	Jesse La Grew	Honeypot Iptables Maintenance and DShield-SIEM Logging
2025-04-15	Xavier Mertens	Online Services Again Abused to Exfiltrate Data
2025-02-13	Guy Bruneau	DShield SIEM Docker Updates
2025-01-28	Xavier Mertens	Fileless Python InfoStealer Targeting Exodus
2024-12-20	Xavier Mertens	Christmas "Gift" Delivered Through SSH
2024-12-15	Johannes Ullrich	Exploit attempts inspired by recent Struts2 File Upload Vulnerability (CVE-2024-53677, CVE-2023-50164)
2024-09-16	Xavier Mertens	Managing PE Files With Overlays
2024-05-31	Xavier Mertens	"K1w1" InfoStealer Uses gofile.io for Exfiltration
2023-11-20	Jesse La Grew	Overflowing Web Honeypot Logs
2023-09-29	Xavier Mertens	Are You Still Storing Passwords In Plain Text Files?
2023-07-23	Guy Bruneau	Install & Configure Filebeat on Raspberry Pi ARM64 to Parse DShield Sensor Logs
2023-06-09	Xavier Mertens	Undetected PowerShell Backdoor Disguised as a Profile File
2023-04-04	Johannes Ullrich	Analyzing the efile.com Malware "efail"
2023-02-24	Brad Duncan	URL files and WebDAV used for IcedID (Bokbot) infection
2023-01-21	Guy Bruneau	DShield Sensor JSON Log to Elasticsearch
2023-01-04	Rob VandenBrink	Update to RTRBK - Diff and File Dates in PowerShell
2022-12-20	Xavier Mertens	Linux File System Monitoring & Actions
2022-07-25	Xavier Mertens	PowerShell Script with Fileless Capability
2022-07-17	Didier Stevens	Python: Files In Use By Another Process
2022-06-25	Xavier Mertens	Malicious Code Passed to PowerShell via the Clipboard
2022-06-04	Guy Bruneau	Spam Email Contains a Very Large ISO file
2022-06-03	Xavier Mertens	Sandbox Evasion... With Just a Filename!
2022-05-29	Didier Stevens	Extracting The Overlay Of A PE File
2022-05-28	Didier Stevens	Huge Signed PE File: Keeping The Signature
2022-05-26	Didier Stevens	Huge Signed PE File
2022-05-23	Johannes Ullrich	Attacker Scanning for jQuery-File-Upload
2022-05-20	Xavier Mertens	A 'Zip Bomb' to Bypass Security Controls & Sandboxes
2022-03-24	Xavier Mertens	Malware Delivered Through Free Sharing Tool
2021-09-11	Guy Bruneau	Shipping to Elasticsearch Microsoft DNS Logs
2021-05-02	Didier Stevens	PuTTY And FileZilla Use The Same Fingerprint Registry Keys
2021-04-10	Guy Bruneau	Building an IDS Sensor with Suricata & Zeek with Logs to ELK
2021-03-12	Guy Bruneau	Microsoft DHCP Logs Shipped to ELK
2021-02-12	Xavier Mertens	AgentTesla Dropped Through Automatic Click in Microsoft Help File
2020-06-12	Xavier Mertens	Malicious Excel Delivering Fileless Payload
2020-05-22	Didier Stevens	Some Strings to Remember
2020-05-04	Didier Stevens	Sysmon and File Deletion
2020-03-21	Guy Bruneau	Honeypot - Scanning and Targeting Devices & Services
2019-10-03	Xavier Mertens	"Lost_Files" Ransomware
2019-08-04	Didier Stevens	Detecting ZLIB Compression
2019-02-19	Didier Stevens	Identifying Files: Failure Happens
2018-11-05	Johannes Ullrich	Struts 2.3 Vulnerable to Two Year old File Upload Flaw
2017-11-29	Xavier Mertens	Fileless Malicious PowerShell Sample
2017-10-30	Didier Stevens	PE files and debug info
2017-10-24	Xavier Mertens	Stop relying on file extensions
2017-07-19	Xavier Mertens	Bots Searching for Keys & Config Files
2017-07-02	Didier Stevens	PE Section Name Descriptions
2017-05-26	Lorna Hutcheson	File2pcap - A new tool for your toolkit!
2016-08-24	Xavier Mertens	Example of Targeted Attack Through a Proxy PAC File
2016-05-21	Didier Stevens	Python Malware - Part 2
2016-03-30	Xavier Mertens	What to watch with your FIM?
2016-01-20	Xavier Mertens	/tmp, %TEMP%, ~/Desktop, T:\, ... A goldmine for pentesters!
2015-07-12	Didier Stevens	Jump List Files Are OLE Files
2014-03-17	Johannes Ullrich	Scans for FCKEditor File Manager
2014-02-28	Daniel Wesemann	Oversharing
2014-01-11	Guy Bruneau	tcpflow 1.4.4 and some of its most Interesting Features
2013-08-26	Alex Stanford	Stop, Drop and File Carve
2013-08-21	Alex Stanford	Psst. Your Browser Knows All Your Secrets.
2011-11-28	Tom Liston	A Puzzlement...
2011-08-15	Mark Hofman	How to find unwanted files on workstations
2009-12-28	Johannes Ullrich	8 Basic Rules to Implement Secure File Uploads http://jbu.me/48 (inspired by IIS ; bug)
2009-08-13	Jim Clausing	Tools for extracting files from pcaps
2009-06-27	Tony Carothers	New NIAP Strategy on the Horizon
2009-05-27	donald smith	Host file black lists
2009-05-25	Jim Clausing	More tools for (US) Memorial Day
2008-03-13	Jason Lam	Remote File Include spoof!?