Category: SANS Internet Storm Center, InfoCON: green

Bytes over DNS, (Mon, Oct 27th)

I was intrigued when Johannes talked about malware that uses BASE64 over DNS to communicate. Take a DNS request like this: label1.label2.tld. Labels in a request like this can only be composed with letters (not case-sensitive), digits and a hyphen…

Kaitai Struct WebIDE, (Sun, Oct 26th)

When I have a binary file to analyze, I often use tools like 010 Editor or format-bytes.py (a tool I develop). Sometimes I also use Kaitai Struct. This article has been indexed from SANS Internet Storm Center, InfoCON: green Read…

Infostealer Targeting Android Devices, (Thu, Oct 23rd)

Infostealers landscape exploded in 2024 and they remain a top threat today. If Windows remains a nice target (read: Attackers' favorite), I spotted an Infostealer targeting Android devices. This sounds logical that attackers pay attention to our beloved mobile devices…

What time is it? Accuracy of pool.ntp.org., (Tue, Oct 21st)

Yesterday, Chinese security services published a story alleging a multi-year attack against the systems operating the Chinese standard time (CST), sometimes called Beijing Standard Time. China uses only one time zone across the country, and has not used daylight saving…