Security News
This month's Windows Server updates are causing a wide range of issues, including VPN and RDP connectivity problems on servers with Routing and Remote Access Service enabled. One of the more severe problems is the servers freezing for several minutes after a client connects to the RRAS server with SSTP. Windows Remote Desktop and VPN connectivity issues.
Microsoft is warning that the BlackCat ransomware crew is leveraging exploits for unpatched Exchange server vulnerabilities to gain access to targeted networks. Upon gaining an entry point, the attackers swiftly moved to gather information about the compromised machines, followed by carrying out credential theft and lateral movement activities, before harvesting intellectual property and dropping the ransomware payload. The entire sequence of events played out over the course of two full weeks, the Microsoft 365 Defender Threat Intelligence Team said in a report published this week.
Researchers at security product recommendation service Safety Detectives claim they've found almost a million customer records wide open on an Elasticsearch server run by Malaysian point-of-sale software vendor StoreHub. Safety Detectives' report states it found a StoreHub sever that stored unencrypted data and was not password protected.
A new Golang-based peer-to-peer botnet has been spotted actively targeting Linux servers in the education sector since its emergence in March 2022. Dubbed Panchan by Akamai Security Research, the malware "Utilizes its built-in concurrency features to maximize spreadability and execute malware modules" and "Harvests SSH keys to perform lateral movement."
New botnet and cryptominer Panchan attacking Linux servers. Akamai Security Research announced on Wednesday it has uncovered a new botnet attacking the Linux servers of telecom and education providers in Asia, Europe and the Americas.
A new peer-to-peer botnet named Panchan appeared in the wild around March 2022, targeting Linux servers in the education sector to mine cryptocurrency. At the same time, it has powerful detection avoidance capabilities, such as using memory-mapped miners and dynamically detecting process monitoring to stop the mining module immediately.
Microsoft says that some applications might fail to backup data using Volume Shadow Copy Service after applying the June 2022 Patch Tuesday Windows updates."After you install the June 14, 2022 or a later Windows update, operations related to shadow copies on an Application Server running VSS aware Server Applications that store data on remote SMB 3.0 or later file shares may fail for SMB shares hosted on a File Server," Microsoft explains.
Two of the more prolific cybercriminal groups, which in the past have deployed such high-profile ransomware families as Conti, Ryuk, REvil and Hive, have started adopting the BlackCat ransomware-as-as-service offering. The use of the modern Rust programming language to stabilize and port the code, the variable nature of RaaS, and growing adoption by affiliate groups all increase the chances that organizations will run into BlackCat - and have difficulty detecting it - according to researchers with the Microsoft 365 Defender Threat Intelligence Team.
Microsoft says BlackCat ransomware affiliates are now attacking Microsoft Exchange servers using exploits targeting unpatched vulnerabilities. Two weeks after the initial compromise using an unpatched Exchange server as an entry vector, the threat actor deployed BlackCat ransomware payloads across the network via PsExec.
Ransomware gangs are now targeting a recently patched and actively exploited remote code execution vulnerability affecting Atlassian Confluence Server and Data Center instances for initial access to corporate networks. Ransomware starts circling unpatched Confluence servers.