The cryptocurrency security landscape faces a dual threat in January 2023 as Genesis Global Holdco, a major lending firm affiliated with Digital Currency Group, files for Chapter 11 bankruptcy protection, while a new class of wallet-draining malware known as “drainware” continues to steal millions from unsuspecting users. These parallel developments underscore the persistent vulnerabilities in both centralized and decentralized crypto infrastructure.
The Exploit Mechanics
Drainware operates through malicious smart contracts that trick users into signing transactions that appear legitimate, typically masquerading as NFT mints or token swaps. Once the user approves the transaction, the malicious contract drains cryptocurrency and NFTs directly from the victim’s wallet. TRM Labs, a blockchain intelligence firm, published a comprehensive analysis of this threat on January 19, 2023, revealing that drainware has no legitimate use cases and represents a growing category of crypto-specific malware.
One of the most prominent drainware variants, dubbed “Monkey Drainer,” was first identified by on-chain investigator Zachxbt in late 2022. The malicious contract stole over $3.5 million in cryptocurrency, including 700 Ethereum stolen within a single 24-hour period. The wallet associated with Monkey Drainer processed over 7,300 transactions in just two months, demonstrating the scale at which these attacks operate.
The attack vectors are deceptively simple. Attackers purchase domains with similar DNS names to legitimate projects, create convincing phishing websites, and wait for victims to interact. When users sign what they believe is a routine transaction, the malicious contract executes a sweeping drain of all accessible assets in the connected wallet.
Affected Systems
The Aurory NFT attack in August 2021 serves as a blueprint for drainware incidents. Attackers purchased a domain mimicking the legitimate Aurory project, leading to over $1.5 million in losses and the theft of more than 70 NFTs. The stolen assets were quickly moved through a Solana DeFi bridge to Ethereum, where they remained as of December 2022.
Meanwhile, the Genesis bankruptcy filing reveals vulnerabilities of a different kind. The company filed for Chapter 11 in the Southern District of New York with estimated liabilities between $1 billion and $10 billion, affecting more than 100,000 creditors. Genesis held approximately $150 million in cash on hand at the time of filing. The collapse followed a two-month struggle after the firm halted withdrawals in November 2022, citing “unprecedented market turmoil” triggered by the FTX collapse.
The Mitigation Strategy
Protecting against drainware requires a multi-layered approach. Users must verify URLs carefully before connecting wallets, use hardware wallets for storing significant holdings, and implement transaction simulation tools that preview what a smart contract will execute before signing. Browser extensions that detect known phishing domains provide an additional layer of defense.
For institutional participants, the Genesis collapse reinforces the importance of due diligence when selecting lending and custody partners. Counterparty risk assessment, regular auditing of reserve proofs, and diversification across multiple service providers are essential practices that many CeFi platforms neglected during the 2021 bull market.
Lessons Learned
The convergence of drainware attacks and CeFi bankruptcies in January 2023 illustrates that crypto security threats operate on multiple fronts simultaneously. While decentralized protocols face smart contract exploits and phishing campaigns, centralized platforms suffer from opacity, mismanagement, and contagion risks. Bitcoin trades at approximately $21,086 and Ethereum at $1,552, with the broader market showing resilience despite these security challenges.
The TRM Labs report emphasizes that drainware represents an evolution in crypto crime, moving beyond traditional phishing to leverage the inherent functionality of smart contracts against their users. Law enforcement and security researchers must adapt their tooling to address these novel attack vectors.
User Action Required
Crypto users should immediately review their wallet’s approved token allowances using tools like Revoke.cash or similar platforms. Any unfamiliar approvals should be revoked promptly. Users should enable transaction previews in their wallet software and never sign transactions from unverified sources. Those affected by the Genesis bankruptcy should file claims through the official restructuring process and monitor court filings for updates on creditor distributions.
Disclaimer: This article is for informational purposes only and does not constitute financial or investment advice. Always conduct your own research before making any financial decisions.
cefi collapses and drainware both exploit the same thing: users who cant verify what happens to their assets after they hand over keys or approve a transaction
monkey drainer stole 3.5m and that was just one variant. imagine how many smaller drainware operators are flying under the radar while everyone focuses on cefi collapses
the article mentions zachxbt identified monkey drainer but there are probably 50 similar drainers operating right now that nobody has named yet
Both threats stem from the same root problem: trust. You either trust a centralized platform with your keys or trust an unknown smart contract with your approvals.
genesis owed billions, monkey drainer took millions, and regular users got hit from both sides in the same month. 2023 was brutal for anyone not in cold storage
genesis and monkey drainer in the same month was the one-two punch that pushed a lot of people into finally learning about hardware wallets
sushi_chef exactly. genesis took billions through bad lending and monkey drainer took millions through bad contracts. both exploited the same weakness: people trusting systems they didnt verify
the fact that TRM Labs published the drainware analysis and it barely made a dent in user behavior tells you everything. people still click approve on random contracts daily