SANS Digital Forensics and Incident Response Blog: Category - Windows IR

DFIR Summit 2016 - Call for Papers Now Open

The 9th annual Digital Forensics and Incident Response Summit will once again be held in the live musical capital of the world, Austin, Texas. The Summit brings together DFIR practitioners who share their experiences, case studies and stories from the field. Summit attendees will explore real-world applications of technologies and solutions from all aspects of … Continue reading DFIR Summit 2016 - Call for Papers Now Open


Detecting Shellcode Hidden in Malicious Files

A challenge both reverse engineers and automated sandboxes have in common is identifying whether a particular file is malicious or not. This is especially true if the malicious aspects are obfuscated and only triggered under very specific circumstances. There are a number of techniques available to try and identify embedded shellcode, for example searching for … Continue reading Detecting Shellcode Hidden in Malicious Files


Monitoring for Delegation Token Theft

Delegation is a powerful feature of Windows authentication which allows one remote system to effectively forward a user's credentials to another remote system. This is sometimes referred to as the "double-hop". This great power does not come without great risk however, as the delegation access tokens used for this purpose can be stolen by attackers … Continue reading Monitoring for Delegation Token Theft


Detecting DLL Hijacking on Windows

Initially identified fifteen years ago, and clearly articulated by a Microsoft Security Advisory, DLL hijacking is the practice of having a vulnerable application load a malicious library (allowing for the execution of arbitrary code), rather than the legitimate library by placing it at a preferential location as dictated by the Dynamic-Link Library Search Order which … Continue reading Detecting DLL Hijacking on Windows


How Miscreants Hide From Browser Forensics

Scammers, intruders and other miscreants often aim to conceal their actions from forensic investigators. When analyzing an IT support scam, I interacted with the person posing as the help desk technician. He brought up a web page on the victim's system to present payment form, so the person would supply contact and credit card details. He did this in a surprising manner, designed to conceal the destination URL. Continue reading How Miscreants Hide From Browser Forensics