In the last few days, we closely followed the malicious software outbreak that took control of about 12,500 devices, mostly in Ukraine and Russia, demanding a $300 ransom from the infected device’s owner. Although this new attack is fascinating, we noticed that the associated stories quickly got out of hand.
To remain in business, companies rely on perimeter security to protect, among other, their “secret sauce” recipe and the confidential information of their customers. To this end, information security vendors offer different types of defenses. The intent is commendable and the organization then feels confident, warm and cozy behind its firewall. However, there is something fishy.
At the moment, Java deserialization vulnerabilities are becoming well known by vendors and attackers. Nevertheless, pentesters will still encounter these types of vulnerabilities. The low-hanging fruits can be identified with the current tools. Most of the available tools rely on the command execution API. However, the command from the payload may fail because of Operating System specific conditions.
Malware analysis is like defusing bombs. The objective is to disassemble and understand a program that was built to do harm or spy on computer users (oops, this is where the bomb analogy fails, but one gets the point). That program is often obfuscated (ie: packed) to make the analysis more complex and sometimes dangerous. This blog post introduces a tool that we have built that creates Windows Virtual Machines (VMs) without any user interaction.