I published the following diary on isc.sans.org: “Interesting VBA Dropper“. Here is another sample that I found in my spam trap. The technique to infect the victim’s computer is interesting. I captured a mail with a malicious RTF document (SHA256: c247929d3f5c82247db9102d2dec28c27f73dc0824f8b386f92aad1a22fd8edd) that exploits the OLE2Link vulnerability (CVE-2017-0199). Once opened, the
I published the following diary on isc.sans.org: “Simple Analysis of an Obfuscated JAR File“. Yesterday, I found in my spam trap a file named ‘0.19238000 1509447305.zip’ (SHA256: 7bddf3bf47293b4ad8ae64b8b770e0805402b487a4d025e31ef586e9a52add91). The ZIP archive contained a Java archive named ‘0.19238000 1509447305.jar’ (SHA256: b161c7c4b1e6750fce4ed381c0a6a2595a4d20c3b1bdb756a78b78ead0a92ce4). The file had a score of 0/61 in VT and
While you use a tool every day, you get more and more knowledge about it but you also have plenty of ideas to improve it. I’m using Splunk on a daily basis within many customers’ environments as well as for personal purposes. When you have a big database of events,
I published the following diary on isc.sans.org: “Some Powershell Malicious Code“. Powershell is a great language that can interact at a low-level with Microsoft Windows. While hunting, I found a nice piece of Powershell code. After some deeper checks, it appeared that the code was not brand new but it
The idea of this Docker container came after reading the excellent Micah Hoffman’s blog post:Â Dark Web Report + TorGhost + EyeWitness == Goodness. Like Micah, I’m also receiving a daily file with new websites discovered on the (dark|deep) web (name it as you prefer). This service is provided by @hunchly
Excel sheets are very common files in corporate environments. It’s definitively not a security tool but it’s not rare to find useful information stored in such files. When these data must be processed for threat hunting or to collect IOC’s, it is mandatory to automate, as much as possible, the processing
I published the following diary on isc.sans.org: “Stop relying on file extensions“. Yesterday, I found an interesting file in my spam trap. It was called ‘16509878451.XLAM’. To be honest, I was not aware of this extension and I found this on the web: “A file with the XLAM file extension is an
Let’s go for more wrap-ups. The second day started smoothly with Haroon Meer’s keynote. There was only one track today, the second room being fully dedicated to hackerspaces. Harron is a renowned speaker and the title of his keynote was “Time to play ‘D’â€. The intro was simple: Nothing new,
My wrap-up crazy week continues… I’m now in Budapest to attend Hacktivity for the first time. During the opening ceremony some figures were given about this event: 14th edition(!), 900 attendees from 23 different countries and 36 speakers. Here is a nice introduction video. The venue is nice with two tracks
Hack.lu is already over and I’m currently waiting for my connecting flight in Munich, that’s the perfect opportunity to write my wrap-up. This one is shorter because I had to leave early to catch my flight to Hacktivity and I missed some talks scheduled in the afternoon. Thank Lufthansa for
