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Malicious ‘bull checker’ Chrome extension found targeting Solana users

News Feed - 2024-08-20 02:08:10

Tom Mitchelhill3 hours agoMalicious ‘bull checker’ Chrome extension found targeting Solana usersDecentralized exchange aggregator Jupiter has alerted users of a malicious browser extension that managed to sneak through Solana’s drainer checks.769 Total views1 Total sharesListen to article 0:00NewsOwn this piece of crypto historyCollect this article as NFTCOINTELEGRAPH IN YOUR SOCIAL FEEDFollow ourSubscribe onDecentralized exchange aggregator Jupiter says it has identified a new malicious browser extension. The extension has already drained the wallets of several Solana users and can even sneak past detectors.


In an Aug. 20 research post, pseudonymous Jupiter founder Meow said “Bull Checker” — a nefarious Google Chrome browser extension — had been targeting Solana users on Reddit, advertising itself as an extension to view all the holders of specific memecoins. Source:Jupiter


“If you have this extension (or similar extensions with extensive permissions you cannot trust), please remove it immediately,” wrote Jupiter in an Aug. 19 X post.


Meow said the extension was able to pass Solana simulation checks and “appear normal” but was actually a drainer designed to steal funds from users’ wallets.


“After installing Bull Checker, it will wait till a user interacts with a regular DApp [decentralized application] on the official domain, before modifying the transaction sent to the wallet to sign. After modification, the simulation result will still be ‘normal’ and not appear to be a drainer,” explained Meow.

Meow said the Bull Checker extension asked users to accept permissions to “read and write” data, adding that any legitimate wallet-checking extension should only ever ask for ‘read-only’” permissions. 


“This should have been a major red flag for users, but apparently, several users continued to install and use the extension,” he said. The “Bull Checker” extension asked for permission to read and write data. Source: Jupiter


“Users with this extension would interact with the DApps as per normal, have the simulation show up as normal, but have the possibility of their tokens being maliciously transferred to another wallet upon transaction completion,” he added. 


Related:Solana ETF ‘still in play’ despite Cboe filing removal — VanEck exec


One of the users advertising the malicious extension on Reddit said they had used it to make $3,000 in the last week without providing any further specifics. 


Jupiter reassured users that no vulnerabilities were discovered in any of the major decentralized applications or wallets on the Solana network during its investigation. 


The discovery of the “Bull Checker” extension comes less than two weeks after Solana-based decentralized futures exchange Cypher Protocol halted its smart contract system in the wake of an estimated $1 million exploit.


Meanwhile, on July 8, Matthias Mende, co-founder of the Dubai Blockchain Center, told Cointelegraph he had fallen victim to an exploit where a hacker managed to steal over $100,000 in Solana (SOL) from his Phantom Wallet following his participation in a memecoin presale event. 


Mende said he still doesn’t know how the hack occurred. 


Magazine:5 dangers to beware when apeing into Solana memecoins# Blockchain# Altcoin# Hackers# Scams# DeFi# Solana# MemecoinAdd reaction

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