We noticed a sudden increase in hack tool installation attempts from various industries in China, Taiwan, Italy and Hong Kong. We found a trojan combining RADMIN and MIMIKATZ to drop a Monero miner by exploiting MS17-010 for propagation, likely taking advantage of the Lunar New Year holidays.Read More
We found a new Mirai variant we’ve called Yowai and Gafgyt variant Hakai abusing a ThinkPHP flaw for propagation and DDoS attacks.Read More
We analyzed another Mirai variant called “Miori,” which is being spread through a Remote Code Execution (RCE) vulnerability in the PHP framework, ThinkPHP. Aside from Miori, several known Mirai variants like IZ1H9 and APEP were also spotted using the same RCE exploit for their arrival method. The aforementioned variants all use factory default credentials via Telnet to brute force their way in and spread to other devices.Read More
We explored possible strategies attackers can employ when abusing PowerShell Core. These proofs of concept (PoCs) would help in better understanding — and in turn, detecting and preventing — the common routines and behaviors of possible and future threats that attackers might use. The PoCs we developed using PowerShell Core were conducted on Windows, Linux, and mac OSs. Most of the techniques we applied can be seen from previous threats involving PowerShell-based functionalities, such as the fileless KOVTER and POWMET. The scenarios in our PoCs are also based on the PowerShell function they use.Read More
We recently observed cases of abuse of the systems running misconfigured Docker engine with Docker application program interface (API) ports exposed. We also noticed that the malicious activities were focused on scanning for open ports 2375/TCP and 2376/TCP, which are used by the Docker engine daemon (dockerd). The intrusion attempts to deploy a cryptocurrency-mining malware (detected by Trend Micro as Coinminer.SH.MALXMR.ATNE) on the misconfigured systems.
Docker implements virtualization on the operating-system (OS) level — also known as containerization. The Docker APIs, in particular, allow remote users to control Docker images like a local Docker client does. Opening the API port for external access is not recommended, as it can allow hackers to abuse this misconfiguration for malicious activities.Read More