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A Dangerous New Player in the InfoStealer Landscape
In the ever-expanding world of cybercrime, a new malware tool has emerged that could raise the stakes for both individuals and enterprises alike. Dubbed “123 | Stealer”, this newly advertised credential-harvesting malware is gaining attention on underground forums, offering a dangerous combination of affordability, technical sophistication, and wide attack surface. Priced at just \$120 per month, the tool is being promoted by a user known as koneko, and it’s designed to target a broad range of platforms and data sources — from browser cookies to cryptocurrency wallets.
The malware isn’t just another script kiddie tool. It’s written in C++, boasts broad browser compatibility, and claims to support over 70 browser extensions, including popular platforms like Discord. Though its capabilities remain unverified by independent cybercriminals or researchers, the arrival of this malware highlights a trend that continues to plague the cybersecurity community: the professionalization and productization of malware through malware-as-a-service (MaaS) models.
Expanding Capabilities of 123 | Stealer
According to advertisements circulating on LeakBase and DarkForums, the “123 | Stealer” tool presents an advanced and flexible framework that caters to the needs of credential thieves. Its listed features include the ability to:
Steal browser cookies, saved passwords, and session data
Extract data from cryptocurrency wallets
Perform process and file grabbing operations
Target a wide list of Chromium and Gecko-based browsers
Integrate with more than 70 browser extensions
Remain lightweight, shipping as a DLL-free 700KB stub
A particularly alarming requirement is the use of a self-hosted proxy server (for Ubuntu/Debian environments), which facilitates secure data exfiltration. Once installed, the malware connects to an admin panel that consolidates and manages stolen data, offering a centralized command dashboard for operators.
While the technical promises are impressive,
What Undercode Say:
Rise of Malware-as-a-Service (MaaS)
The release of “123 | Stealer” is yet another signal that MaaS ecosystems are maturing. Subscription-based models like this shift the balance in favor of less-skilled attackers, who can now purchase powerful tools without having to develop them from scratch. The \$120 monthly price tag is modest compared to the potential gains, making this malware extremely appealing to small-time criminals and organized threat groups alike.
Technical Versatility
Unlike simplistic stealers, this one comes with multi-platform targeting, making it flexible across a wide range of user environments. With Chromium and Gecko compatibility and support for over 70 extensions, the developers clearly aim to maximize reach and effectiveness. The lack of dependency on DLL files further reduces friction during deployment and evasion.
Admin Panel and Centralization
Centralized admin panels are becoming the norm in modern malware strains, and “123 | Stealer” continues that trend. Centralized command systems make it easier for cybercriminals to manage mass campaigns, filter through stolen data, and orchestrate secondary attacks. This functionality can significantly increase the operational efficiency of attacker groups.
Lack of Peer Reviews Raises Flags
Despite its bold feature list, the fact that “123 | Stealer” has not yet been validated by cybercriminal peers introduces skepticism. Tools in the underground typically gain credibility through public test logs or successful breach demonstrations. Until then, early adopters may be taking a gamble.
Impact of Forum Fragmentation
Following the takedown of well-known forums like BreachForums, the underground has become fragmented. This has led to the rise of alternative marketplaces like LeakBase and DarkForums, but it also means that new tools spread slower, and vetting is inconsistent. For defenders, this creates a mixed blessing: there’s more noise, but also more time to develop countermeasures.
Implications for Cybersecurity Defenses
The launch of “123 | Stealer” should raise immediate red flags for CISOs, SOC teams, and red teams. Organizations must adapt by monitoring underground channels, deploying behavior-based detection systems, and updating endpoint defenses to track suspicious activity from lesser-known processes or proxies.
Strategic Takeaway
“123 | Stealer” may still be in its infancy, but its arrival signals a new wave of commoditized, modular malware that lowers the entry barrier for credential theft. If its claims are accurate, it has the potential to become a widely adopted tool among both low-level and advanced threat actors.
Security teams would be wise not to dismiss it due to lack of current validation. In cybercrime, early indicators often precede mainstream exploitation.
🔍 Fact Checker Results:
✅ “123 | Stealer” is confirmed to be advertised on cybercrime forums like LeakBase and DarkForums
✅ C++ and DLL-free stub details align with known underground malware trends
❌ No independent reviews or breach confirmations have yet verified its effectiveness
📊 Prediction:
🧠 As cybercriminal forums continue to decentralize, we predict “123 | Stealer” or similar tools will gain momentum in smaller, invite-only communities. If early users validate its performance, it could soon rival well-known infostealers like Raccoon or RedLine, especially given its low price and rich feature set. Expect its detection signatures to emerge in threat intel feeds within the next 1-2 months.
References:
Reported By: cyberpress.org
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