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The Hacker News - Cybersecurity News and Analysis: WebLogic

Initial Access Broker Involved in Log4Shell Attacks Against VMware Horizon Servers

Initial Access Broker Involved in Log4Shell Attacks Against VMware Horizon Servers

January 26, 2022Ravie Lakshmanan
An initial access broker group tracked as Prophet Spider has been linked to a set of malicious activities that exploits the Log4Shell vulnerability in unpatched VMware Horizon Servers. According to new research published by BlackBerry Research & Intelligence and Incident Response (IR) teams today, the cybercrime actor has been opportunistically weaponizing the shortcoming to download a second-stage payload onto the victimized systems. The payloads observed include cryptocurrency miners, Cobalt Strike Beacons, and web shells, corroborating a previous advisory from the U.K. National Health Service (NHS) that  sounded the alarm  on active exploitation of the vulnerabilities in VMware Horizon servers to drop malicious web shells and establish persistence on affected networks for follow-on attacks. Log4Shell  is a moniker used to refer to an exploit affecting the popular Apache Log4j library that results in remote code execution by logging a specially crafted string. Since public
New Cryptojacking Malware Targeting Apache, Oracle, Redis Servers

New Cryptojacking Malware Targeting Apache, Oracle, Redis Servers

February 01, 2021Ravie Lakshmanan
A financially-motivated threat actor notorious for its cryptojacking attacks has leveraged a revised version of their malware to target cloud infrastructures using vulnerabilities in web server technologies, according to new research. Deployed by the China-based cybercrime group  Rocke , the Pro-Ocean cryptojacking malware now comes with improved rootkit and worm capabilities, as well as harbors new evasion tactics to sidestep cybersecurity companies' detection methods, Palo Alto Networks' Unit 42 researchers  said  in a Thursday write-up. "Pro-Ocean uses known vulnerabilities to target cloud applications," the researchers detailed. "In our analysis, we found Pro-Ocean targeting Apache ActiveMQ ( CVE-2016-3088 ), Oracle WebLogic ( CVE-2017-10271 ) and Redis (unsecure instances)." "Once installed, the malware kills any process that uses the CPU heavily, so that it's able to use 100% of the CPU and mine Monero efficiently." First documented
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