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The dark web has emerged as the state-of-the-art solution for enhancedanonymity. Just like a double-edged sword, it also inadvertently becomes thesafety net and breeding ground for illicit activities. Among them,cryptocurrencies have been prevalently abused to receive illicit income whileevading regulations. Despite the continuing efforts to combat illicitactivities, there is still a lack of an in-depth understanding regarding thecharacteristics and dynamics of cryptocurrency abuses on the dark web. In thiswork, we conduct a multi-dimensional and systematic study to trackcryptocurrency-related illicit activities and campaigns on the dark web. Wefirst harvest a dataset of 4,923 cryptocurrency-related onion sites with over130K pages. Then, we detect and extract the illicit blockchain transactions tocharacterize the cryptocurrency abuses, targeting features fromsingle/clustered addresses and illicit campaigns. Throughout our study, we haveidentified 2,564 illicit sites with 1,189 illicit blockchain addresses, whichaccount for 90.8 BTC in revenue. Based on their inner connections, we furtheridentify 66 campaigns behind them. Our exploration suggests that illicitactivities on the dark web have strong correlations, which can guide us toidentify new illicit blockchain addresses and onions, and raise alarms at theearly stage of their deployment.

The Devil Behind the Mirror: Tracking the Campaigns of Cryptocurrency Abuses on the Dark Web