I published the following diary on isc.sans.edu: “Hunting for Suspicious Processes with OSSEC“: Here is a quick example of how OSSEC can be helpful to perform threat hunting. OSSEC is a free security monitoring tool/log management platform which has many features related to detecting malicious activity on a live system like the
I’m proud to have been selected to give a training at DeepSec (Vienna, Austria) in November: “Hunting with OSSEC“. This training is intended for Blue Team members and system/security engineers who would like to take advantage of the OSSEC integration capabilities with other tools and increase the visibility of their infrastructure behaviour.
I published the following diary on isc.sans.org: “Truncating Payloads and Anonymizing PCAP files“: Sometimes, you may need to provide PCAP files to third-party organizations like a vendor support team to investigate a problem with your network. I was looking for a small tool to anonymize network traffic but also to
I published the following diary on isc.sans.org: “Exploiting the Power of Curl“: Didier explained in a recent diary that it is possible to analyze malicious documents with standard Linux tools. I’m using Linux for more than 20 years and, regularly, I find new commands or new switches that help me
I’m using OSSEC to feed an instance of TheHive to investigate security incidents reported by OSSEC. To better categorize the alerts and merge similar events, I needed to add more observables. OSSEC alerts are delivered by email with interesting information for TheHive. This was an interesting use case to play
TheHive is an awesome tool to perform incident management. One of the software components that is linked to TheHive is Cortex defined as a “Powerful observable analysis engine“. Let’s me explain why Cortex can save you a lot of time. When you are working on an incident in TheHive, observables are
Sometimes, a security incident starts with an email. A suspicious email can be provided to a security analyst for further investigation. Most of the time, the mail is provided in EML or “Electronic Mail Format“. EML files store the complete message in a single file: SMTP headers, mail body and all
I published the following diary on isc.sans.org: “Malicious Powershell Targeting UK Bank Customers”: I found a very interesting sample thanks to my hunting rules… It is a PowerShell script that was uploaded on VT for the first time on the 16th of May from UK. The current VT score is still
I just published a new update of my imap2thehive tool. A quick reminder: this tool is aimed to poll an IMAP mailbox and feed an instance of TheHive with processed emails. This new version is now able to extract interesting IOCs from the email body and attached HTML files. The following indicators are
I published the following diary on isc.sans.org: “The real value of an IOC?“: When a new malware sample is analysed by a security researcher, details are usually posted online with details of the behaviour and, based on this, a list of IOCs or “Indicators of Compromise†is published. Those indicators
