AS WE APPROACH SEPTEMBER, THE ATTACKS WILL BECOME INCREASINGLY SOPHISTICATED. BE CAUTIOUS!!
Security researchers at Koi Security have uncovered a disturbing campaign called RedDirection, in which 18 previously harmless Chrome and Edge extensions were updated to include hidden Trojan. This operation has compromised over 2.3 million users by turning these extensions into tools for redirecting traffic, hijacking data, and maintaining persistent control, all without users’ knowledge.
The extensions began as fully functional tools—such as color pickers, volume boosters, and weather services—with legitimate codebases that earned high user ratings, verified badges, and store promotions. Then, during a routine version update, attackers injected a Trojan component that activated bad behavior the instant users installed the new version.
One such extension, “Color Picker, Eyedropper – Geco colorpick,” was singled out for now functioning as both a useful utility and a covert Trojan.
Despite their legitimate functionality, these corrupted extensions silently monitored user activity. Each time a user visited a website, the malware captured the URL, communicated with a remote command-and-control server, and could redirect users to phishing sites or prompt fake software updates.
BE CAREFUL WHICH EXTENSIONS YOU ADD !!
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BE CAREFUL WHICH PACKAGES YOU ADD !!
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Another ongoing campaign is targeting npm developers with hundreds of typosquat versions of their legitimate counterparts in an attempt to trick them into running cross-platform malware.
The attack is notable for utilizing Ethereum smart contracts for command-and-control (C2) server address distribution, according to independent findings from Checkmarx, Phylum, and Socket published over the past few days.
The activity was first flagged on October 31, 2024, although it's said to have been underway at least a week prior. No less than 287 typosquat packages have been published to the npm package registry.
The packages contain obfuscated JavaScript that's executed during (or post) the installation process, ultimately leading to the retrieval of a next-stage binary from a remote server based on the operating system.
The binary, for its part, establishes persistence and exfiltrates sensitive information related to the compromised machine back to the same server.
But in an interesting twist, the JavaScript code interacts with an Ethereum smart contract using the ethers.js library to fetch the IP address. It's worth mentioning here that a campaign dubbed EtherHiding leveraged a similar tactic by using Binance's Smart Chain (BSC) contracts to move to the next phase of the attack chain.
The decentralized nature of blockchain means it's harder to block the campaign as the IP addresses served by the contract can be updated over time by the threat actor, thereby allowing the malware to seamlessly connect to new IP addresses as older ones are blocked or taken down.
"By using the blockchain in this way, the attackers gain two key advantages: their infrastructure becomes virtually impossible to take down due to the blockchain's immutable nature, and the decentralized architecture makes it extremely difficult to block these communications," Checkmarx researcher Yehuda Gelb said.