HOMETHREATSTONEDEAF
APT / THREAT GROUP

TONEDEAF

2
aliases
Last seen:Mar 17, 2026

Intelligence Profile

TONEDEAF is a backdoor that communicates with Command and Control servers using HTTP or DNS. Supported commands include system information collection, file upload, file download, and arbitrary shell command execution. When executed, this variant of TONEDEAF wrote encrypted data to two temporary files – temp.txt and temp2.txt – within the same directory of its execution.

Threat Analysis

TONEDEAF is a known-sophistication threat actor of undetermined national origin, engaged in cyber operations with a primary motivation of unknown activity patterns.

External References

→https://intezer.com/blog-new-iranian-campaign-tailored-to-us-companies-uses-updated-toolset/
→https://research.checkpoint.com/2021/irans-apt34-returns-with-an-updated-arsenal/
→https://www.fireeye.com/blog/threat-research/2019/07/hard-pass-declining-apt34-invite-to-join-their-professional-network.html

Quick Facts

TypeAPT / Threat Group
Aliases2

Also Known As

TONEDEAFwin.tonedeaf

External Intelligence

Malpedia: win.tonedeaf

Research Links

MITRE ATT&CK VirusTotal Google (news) Twitter/X search
Data sourced from Malpedia, Ransomware.live, RansomLook, and CTIWATCH OSINT collection. Actor attribution is based on available intelligence and may be incomplete.
← All Threat Actors·Geopolitics Map·Search TONEDEAF