Malware

The main methods that Zerobot uses to infect a system, via brute-force or vulnerability exploitation, can easily be prevented by following a few recommended steps. The first recommendation would be to make sure all devices on a network are up-to-date on their patches, particularly any Internet-facing devices. The threat actors rely on devices remaining unpatched to infect systems and grow their botnet, so by making sure all devices are up-to-date and not vulnerable, an organization…

To protect against ransomware attacks, organizations should: • Regularly back up data, air gap, and password protect backup copies offline.• Ensure copies of critical data are not accessible for modification or deletion from the system where the data resides.• Implement network segmentation.• Implement a recovery plan to maintain and retain multiple copies of sensitive or proprietary data and servers in a physically separate, segmented, secure location• Install updates/patch operating systems, software, and firmware as soon…

Companies looking to defend against ransomware should consider adopting a defense-in-depth strategy. Network segmentation, backups, regular patching, and vulnerability assessments are just a few of the measures that should be taken when attempting to lessen the likelihood of an attack. Promoting healthy cyber habits within a company is also crucial. https://www.infosecurity-magazine.com/news/ransomware-attack-guardian

The primary attack vector has been infected USB drives which download a malicious MSI installer file that deploys the primary payload. Either msiexec.exe or wmic.exe are utilized as trusted installers. Some UBS drives have a configured autorun.inf file that will automatically run the payload, whereas others rely on social engineering to invite a targeted user to click on an associated .LNK file. The payload loader now deploys a decoy adware named BrowserAssistant in order to…

These updates are not delivered through Windows Updates and will not install automatically on impacted servers. To get the standalone package, admins must search for the KB number in the Microsoft Update Catalog, download it, and install it manually. They can also be manually imported into Windows Server Update Services (WSUS) and Microsoft Endpoint Configuration Manager. Microsoft also provides instructions on importing updates into WSUS and Configuration Manager from the Microsoft Update Catalog. “You do…

Phishing has continued to be one of the most common means of initial access for threat actors of all skill levels. In this instance, the actor was likely trying to steal credentials and information concerning the DELTA program in order to assist with counterintelligence. Protecting against phishing campaigns is often difficult as it takes just one user to fall victim to the campaign to be successful – it is even more difficult with advanced phishing…