31 Organizations Hit in ClickFix Attack Using Polygon Blockchain to Hide C2 Servers
GuidePoint Security's research team found that attackers have breached at least 31 organizations—spanning e-commerce, professional services, and retail logistics—using a ClickFix campaign that leverages the Polygon blockchain to conceal command-and-control infrastructure. The technique, dubbed EtherHiding, lets attackers dynamically update C2 server locations via blockchain transactions instead of relying on a single fixed address.
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By storing C2 details on a public, immutable ledger, attackers gain a resilient infrastructure that can't be shut down simply by blocking one domain or IP, since new server addresses can be pushed out for fractions of a cent. This marks an evolution in cybercrime tactics, expanding EtherHiding beyond Bitcoin and Ethereum into Polygon's smart contracts, which could make blockchain-abuse techniques more accessible and harder for defenders to disrupt at scale.
- At least 31 organizations across e-commerce, professional services, and logistics have been compromised.
- Attackers use Polygon blockchain smart contracts to dynamically change C2 servers, evading traditional blocking methods.
- This is a new variant of EtherHiding, previously seen mainly on Bitcoin and Ethereum networks.
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Published there as: “ClickFix Campaign Compromises 31 Orgs, Abuses Polygon Blockchain”
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