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D-Link, IoT Devices Under Attack By Tor-Based Gafgyt Variant
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Quote:Researchers have discovered what they say is the first variant of the Gafgyt botnet family to cloak its activity using the Tor network.
 
Gafgyt, a botnet that was uncovered in 2014, has become infamous for launching large-scale distributed denial-of-service (DDoS) attacks. Researchers first discovered activity from the newest variant, which they call Gafgyt_tor, on Feb. 15.
 
In order to evade detection, Gafgyt_tor uses Tor to hide its command-and-control (C2) communications, and encrypts sensitive strings in the samples. The use of Tor by malware families is nothing new; however, researchers said they haven’t seen Gafgyt leveraging the anonymity network until now.
 
“Compared with other Gafgyt variants, the biggest change of Gafgyt_tor is that the C2 communication is based on Tor, which increases the difficulty of detection and blocking,” said researchers with NetLab 360 on Thursday. “The Tor-based C2 communication mechanism has been seen in other families we have analyzed before… but this is the first time we encountered it in the Gafgyt family.”

Read more: https://threatpost.com/d-link-iot-tor-ga...nt/164529/
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