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The Computer Emergency Response Team of Ukraine (CERT-UA) has warned of cyber attacks targeting defense forces in the country with a malware called SPECTR as part of an espionage campaign dubbed SickSync. The agency attributed the attacks to a threat actor it tracks under the moniker UAC-0020, which is also called Vermin and is assessed to be associated with security agencies of the Luhansk People's Republic (LPR). LPR was declared a sovereign state by Russia days prior to its military invasion of Ukraine in February 2022. Attack chains commence with spear-phishing emails containing a RAR self-extracting archive file containing a decoy PDF file, a trojanized version of the SyncThing application that incorporates the SPECTR payload, and a batch script that activates the infection by launching the executable. SPECTR serves as an information stealer by grabbing screenshots every 10 seconds, harvesting files, gathering data from removable USB drives, and stealing credentials and ...

The threat actor known as Commando Cat has been linked to an ongoing cryptojacking attack campaign that leverages poorly secured Docker instances to deploy cryptocurrency miners for financial gain. "The attackers used the cmd.cat/chattr docker image container that retrieves the payload from their own command-and-control (C&C) infrastructure," Trend Micro researchers Sunil Bharti and Shubham Singh said in a Thursday analysis. Commando Cat, so named for its use of the open-source Commando project to generate a benign container, was first documented earlier this year by Cado Security. The attacks are characterized by the targeting of misconfigured Docker remote API servers to deploy a Docker image named cmd.cat/chattr, which is then used as a basis to instantiate a container and break out of its confines using the chroot command, and gain access to the host operating system. The final step entails retrieving the malicious miner binary using a curl or wget command fr...

Muhstik botnet exploits a critical Apache RocketMQ flaw (CVE-2023-33246) for remote code execution , targeting Linux servers and IoT devices for DDoS attacks and cryptocurrency mining . Infection involves executing a shell script from a remote IP, downloading the Muhstik malware binary ("pty3") , and ensuring persistence by copying to multiple directories and editing system files. With over 5,000 vulnerable Apache RocketMQ instances still exposed, organizations must update to the latest version to mitigate risks, while securing MS-SQL servers against brute-force attacks and ensuring regular password changes. The distributed denial-of-service (DDoS) botnet known as Muhstik has been observed leveraging a now-patched security flaw impacting Apache RocketMQ to co-opt susceptible servers and expand its scale. "Muhstik is a well-known threat targeting IoT devices and Linux-based servers, notorious for its ability to infect devices and utilize the...

Learn about critical threats that can impact your organization and the bad actors behind them from Cybersixgill’s threat experts. Each story shines a light on underground activities, the threat actors involved, and why you should care, along with what you can do to mitigate risk.  In an increasingly interconnected world, supply chain attacks have emerged as a formidable threat, compromising not just individual organizations but the broader digital ecosystem. The web of interdependencies among businesses, especially for software and IT vendors, provides fertile ground for cybercriminals to exploit vulnerabilities. By targeting one weak link in the supply chain, threat actors can gain unauthorized access to sensitive information and can conduct malicious activities with severe consequences on multiple organizations, from data breaches and financial losses to widespread disruption and reputational damage. Understanding the nature, impact, and mitigation strategies of supply chain...

Tom works for a reputable financial institution. He has a long, complex password that would be near-impossible to guess. He’s memorized it by heart, so he started using it for his social media accounts and on his personal devices too. Unbeknownst to Tom, one of these sites has had its password database compromised by hackers and put it up for sale on the dark web. Now threat actors are working hard to link these leaked credentials back to real-life individuals and their places of work. Before long, a threat actor will use Tom’s legitimate email account to send a spear-phishing link to his CEO. This is a common account takeover scenario where malicious attackers gain unauthorized access to the organization's systems, putting critical information and operations at risk. It usually starts with compromised credentials. We’ll run through why account takeover is so hard to stop once it starts and why strong password security is the best prevention.  Why are account takeover attacks so...