Brutal Kangaroo: CIA Malware for Air Gapped Systems
June 24th, 2017Via: WikiLeaks:
Today, June 22nd 2017, WikiLeaks publishes documents from the Brutal Kangaroo project of the CIA. Brutal Kangaroo is a tool suite for Microsoft Windows that targets closed networks by air gap jumping using thumbdrives. Brutal Kangaroo components create a custom covert network within the target closed network and providing functionality for executing surveys, directory listings, and arbitrary executables.
The documents describe how a CIA operation can infiltrate a closed network (or a single air-gapped computer) within an organization or enterprise without direct access. It first infects a Internet-connected computer within the organization (referred to as “primary host”) and installs the BrutalKangaroo malware on it. When a user is using the primary host and inserts a USB stick into it, the thumbdrive itself is infected with a separate malware. If this thumbdrive is used to copy data between the closed network and the LAN/WAN, the user will sooner or later plug the USB disk into a computer on the closed network. By browsing the USB drive with Windows Explorer on such a protected computer, it also gets infected with exfiltration/survey malware. If multiple computers on the closed network are under CIA control, they form a covert network to coordinate tasks and data exchange. Although not explicitly stated in the documents, this method of compromising closed networks is very similar to how Stuxnet worked.
