Malware Analysis

Tracking the Hide and Seek Botnet

Hide and Seek (HNS) is a malicious worm which mainly infects Linux based IoT devices and routers. The malware spreads via bruteforcing SSH/Telnet credentials, as well as some old CVEs. What makes HNS unique is there’s no command and control server; instead, it receives updates using a custom peer-to-peer network …

Threat Intelligence

The Kelihos Botnet

A while ago I started writing a series of articles documenting the Kelihos Peer-to-Peer infrastructure but had to pull them due to an ongoing operation. As most of you have probably seen, the botnet operator was arrested a few days ago and the FBI have begun sinkholing the botnet (which will …

Threat Intelligence

Significant Increase in Kelihos Botnet Activity

Since the Kelihos takedown in front of a live audience at RSA Conference in 2013, the operator had opted to maintain a low profile by keeping the total number of infections at only a fraction of the previous size. In the past Kelihos’ MO was spamming stock pump and dump schemes or pharmaceutical scams then laying …