We detected mining activity on our honeypot that involves the search engine Elasticsearch, which is a Java-developed search engine based on the Lucene library and released as open-source. The attack was deployed by taking advantage of known vulnerabilities CVE-2015-1427, a vulnerability in its Groovy scripting engine that allows remote attackers to execute arbitrary shell commands through a crafted script, and CVE-2014-3120, a vulnerability in the default configuration of Elasticsearch.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
Current data on the threat landscape of North America shows the need for a comprehensive and proactive approach to security. A traditional approach would be to build a threat response team. However, to be effective against current threats, a threat response team needs to have a considerable amount of skills, time, and resources, which may not be feasible for some organizations. This is only exacerbated by the daily tasks associated with keeping the business up and running. If treated as just a part of the broader job of regular IT staff, threat management can prove overwhelming, as it includes vulnerability assessment, patching, firmware upgrades, vendor management, intrusion detection and prevention systems (IDS/IPS) and firewall monitoring, and other specialized focus areas. And even if enterprises were willing to allot people to react to security incidents, the sheer volume of events and the time-consuming tasks of prioritizing and analyzing them often prove too much to handle.
These could be handled better by security professionals especially focused on threats — an advantage that managed detection and response (MDR) can bring to organizations. MDR provides advanced threat hunting services, faster alert prioritization, root cause analysis, detailed research, and a remediation plan that empowers organizations with better ability to respond to sophisticated attacks, examples of which have been found throughout North America for the second quarter of 2018.Read More
We discovered a new exploit kit we named Underminer that employs capabilities used by other exploit kits to deter researchers from tracking its activity or reverse engineering the payloads. Underminer delivers a bootkit that infects the system’s boot sectors as well as a cryptocurrency-mining malware named Hidden Mellifera. Underminer transfers malware via an encrypted transmission control protocol (TCP) tunnel and packages malicious files with a customized format similar to ROM file system format (romfs). These make the exploit kits and its payload challenging to analyze.Read More
We were able to observe a series of network attacks exploiting CVE-2018-7602, a security flaw in the Drupal content management framework. For now, these attacks aim to turn affected systems into Monero-mining bots. Of note are its ways of hiding behind the Tor network to elude detection and how it checks the affected system first before infecting it with a cryptocurrency-mining malware. While these attacks currently deliver resource-stealing and system performance-slowing malware, the vulnerability can be used as a doorway to other threats.Read More