OnionDuke

Description

(F-Secure) The OnionDuke toolset includes at least a dropper, a loader, an information stealer trojan and multiple modular variants with associated modules.

OnionDuke first caught our attention because it was being spread via a malicious Tor exit node. The Tor node would intercept any unencrypted executable files being downloaded and modify those executables by adding a malicious wrapper contained an embedded OnionDuke. Once the victim finished downloading the file and executed it, the wrapper would infect the victim’s computer with OnionDuke before executing the original legitimate executable.

The same wrapper has also been used to wrap legitimate executable files, which were then made available for users to download from torrent sites. Again, if a victim downloaded a torrent containing a wrapped executable, they would get infected with OnionDuke.

Finally, we have also observed victims being infected with OnionDuke after they were already infected with CozyDuke. In these cases, CozyDuke was instructed by its C&C server to download and execute OnionDuke toolset.

Names

Name
OnionDuke

Category

Malware

Type

  • Dropper
  • Loader
  • Info stealer

Information

Mitre Attack

Malpedia

Alienvault Otx

Other Information

Uuid

4b23da0a-7140-4fc2-b9fa-cc896215964e

Last Card Change

2020-05-14