After looking into the recent variant of the Glupteba dropper delivered from a malvertising attack, we found that the dropper downloaded two undocumented components aside from the Glupteba malware—a browser stealer and a router exploiter. Another notable feature is that the malware can now also update its command and control server address using data from bitcoin transactions.
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We analyzed a malicious Monero miner using multiple methods for propagation and infection to systems and vulnerable databases. While initially found infecting systems in China beginning of the year, the malware is expanding to other countries with more infiltration techniques like EternalBlue and PowerShell abuse.
Read More The concept of a stealthy, difficult-to-detect malware operating behind the scenes has proven to be an irresistible proposition for many threat actors, and they’re evidently adding even more techniques, as seen in a cryptocurrency miner (detected as Coinminer.Win32.MALXMR.TIAOODAM) we discovered that uses multiple obfuscation and packing as part of its routine.
Read More Our honeypot sensors, which are designed to emulate Secure Shell (SSH), Telnet, and File Transfer Protocol (FTP) services, recently detected a mining bot related to the IP address 192.158.228.46. The address has been seen to search for both SSH- and IoT-related ports, including 22, 2222, and 502. In this particular attack, however, the IP has landed on port 22, SSH service. The attack could be applicable to all servers and connected devices with a running SSH service.
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We observed a large spike in the number of devices scanning the internet for port 7001/TCP since April 27, 2018. Our analysis found that it’s increased activity was caused by cybercriminals engaging in cryptomining via exploiting CVE-2017-10271. The flaw is a patched Oracle WebLogic WLS-WSAT vulnerability that can allow remote attackers to execute arbitrary code on unpatched servers. This marks the second time attackers abused CVE-2017-10271 for cryptomining purposes this year. In February, the vulnerability was exploited to deliver 64-bit and 32-bit variants of an XMRig Monero miner.
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