Publication Details

Detecting DoH-Based Data Exfiltration: FluBot Malware Case Study

RADER, R.; JEŘÁBEK, K.; RYŠAVÝ, O. Detecting DoH-Based Data Exfiltration: FluBot Malware Case Study. IEEE 48th Conference on Local Computer Networks (LCN). Daytona Beach: IEEE Computer Society, 2023. p. 50-54. ISBN: 979-8-3503-0074-1.
Czech title
Detekce exfiltrace dat na základě DoH: Případová studie FluBot Malware
Type
conference paper
Language
English
Authors
Rader Roman (UIFS)
Jeřábek Kamil, Ing., Ph.D. (DIFS)
Ryšavý Ondřej, doc. Ing., Ph.D. (DIFS)
Keywords

DoH detection, malware detection, computer communication analysis, packet classification

Abstract

This paper presents a novel approach for detecting the FluBot malware, an advanced Android banking Trojan that has been observed in active attacks in 2021 and 2022. The proposed method uses a two-layer detection mechanism to identify FluBot network connections. In the first layer, a machine learning algorithm is used to detect DNS-over-HTTPS (DoH) within Netflow records. The second layer uses a modified version of an existing domain generation algorithm (DGA) detection algorithm to target the DoH connections associated with the FluBot malware specifically. To evaluate the effectiveness of this approach, we used a dataset consisting of FluBot network traffic captured in a controlled sandbox environment. The preliminary results show that our DoH classifier achieves high accuracy and detection rates in identifying instances of FluBot malware, while maintaining a low false positive rate.

Published
2023
Pages
50–54
Proceedings
IEEE 48th Conference on Local Computer Networks (LCN)
ISBN
979-8-3503-0074-1
Publisher
IEEE Computer Society
Place
Daytona Beach
DOI
10.1109/LCN58197.2023.10223341
BibTeX 
@inproceedings{BUT184570,
  author="Roman {Rader} and Kamil {Jeřábek} and Ondřej {Ryšavý}",
  title="Detecting DoH-Based Data Exfiltration: FluBot Malware Case Study",
  booktitle="IEEE 48th Conference on Local Computer Networks (LCN)",
  year="2023",
  pages="50--54",
  publisher="IEEE Computer Society",
  address="Daytona Beach",
  doi="10.1109/LCN58197.2023.10223341",
  isbn="979-8-3503-0074-1",
  url="https://www.fit.vut.cz/research/publication/13007/"
}
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