SANS Digital Forensics and Incident Response Blog: Category - Computer Forensics

Identifying and Disrupting Crypto-Ransomware (and Destructive Malware)

In recent years, malware has become very personal. Crypto-ransomware threats, including CryptoLocker, CryptoWall and TorrentLocker (pdf), have infected home users, businesses and even police departments, all of whom have had their personal data and hard work held hostage. When we think of precious family photos or an academic thesis being wiped by pure greed, it … Continue reading Identifying and Disrupting Crypto-Ransomware (and Destructive Malware)


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


Has the smartphone finally outsmarted us?

I can honestly say that the most common question I am asked by examiners, investigators, students and even my neighbors is, "which phone is the most secure?" Obviously, the concern behind the question varies. Some want to secure their own device, and others, like myself, want to prove everyone in DFIR wrong by cracking into … Continue reading Has the smartphone finally outsmarted us?


2015 DFIR Monterey Network Forensic Challenge Results

2015-03-04 UPDATE: I've added some thought process/methodology to the answers inline below. Thanks to everyone that submitted or just played along with the SANS DFIR Network Forensic Challenge! We had over 3,000 evidencedownloads, and more than 500 submissions! Per the rules, the winner must have answered four of the six questions correctly. Then, by random … Continue reading 2015 DFIR Monterey Network Forensic Challenge Results