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Date: 06/20/2023
ChromeLoader is a malicious extension that was first discovered in 2022. The newest ChromeLoader variant has been dubbed “Shampoo.” The campaign tricks users into downloading and running malicious VBScript files from specific sites. It has been documented that sites hosting pirated movie and game sites are masquerading as the Shampoo ChromeLoader extension.
This ChromeLoader variant has the capability to gather sensitive information, such as search queries, as well as redirect searches to command-and-control servers and inject advertisements into browsing sessions. Users are also prevented from accessing chrome://extensions by redirecting to chrome://settings so the extension cannot be disabled.
Ensure endpoints are protected with an EDR platform (Endpoint Detection & Response) to monitor for anomalous behavior, including suspicious connections or scripts being executed. Ideally, this platform should be monitored 24/7 for efficient responses to actionable alerts.
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A third vulnerability in Progress MOVEit Transfer software was discovered and posted on June 15, 2023. This vulnerability is tracked as CVE-2023-35708 and is a SQL injection vulnerability that can be exploited from unauthenticated perspective with access to MOVEit Transfer web application.
Potential Impact
Successful exploitation could allow an attacker to gain access to the MOVEit database. Exploitation involves submitting a crafted payload resulting in the modification or disclosure of database information. As with the previous SQL injection vulnerabilities, threat actor groups such as Cl0p Ransomware continue to target vulnerable organizations.
MOVEit Transfer versions released before 2021.0.8 (13.0.8), 2021.1.6 (13.1.6), 2022.0.6 (14.0.6), 2022.1.7 (14.1.7), 2023.0.3 (15.0.3) are impacted. A patch is available and should be applied immediately. Other remediation steps involve disabling web access to the MOVEit Transfer web application. Steps to address CVE-2023-35708 can be found here: https://community.progress.com/s/article/MOVEit-Transfer-Critical-Vulnerability-15June2023
Sources
https://community.progress.com/s/article/MOVEit-Transfer-Critical-Vulnerability-15June2023
https://thehackernews.com/2023/06/third-flaw-uncovered-in-moveit-transfer.html
According to Citrix, vulnerability CVE-2023-24489 “could allow an unauthenticated attacker to compromise the customer-managed ShareFile storage zones controller remotely.”
Remote compromise of ShareFile storage can result in corporate data leakage and loss of intellectual property. A search on Shodan for ShareFile shows more than 13,000 hosts likely running this service.
Upgrade Citrix ShareFile storage zones controller to version 5.11.24 and later.
Sources
A threat actor group going by the handle “Anonymous Sudan” claimed responsibility two weeks ago for several disruptions to Microsoft cloud services, including Outlook, SharePoint Online, and OneDrive for Business. A June 16, 2023 report from Microsoft confirms that the attacks were perpetrated by threat actor group “Storm-1359”, widely known in the information security community as “Anonymous Sudan.” Despite its name, Anonymous Sudan is commonly thought to be linked to Russia.
Geopolitical strife resulting in service outages is not a new phenomenon. Depending on which services are disrupted, impacts can vary across a broad spectrum.
Always plan for service disruptions to critical business services, whether these services are hosted on-premises or in a Software-As-A-Service (SAAS) offering. Develop business continuity plans and regularly test them through tabletop exercises; organizations at a high level of maturity may perform full-interruption tests.
The penultimate tests for business continuity involve “Chaos Engineering”: “the discipline of experimenting on a system to build confidence in the system’s capability to withstand turbulent conditions in production.” The Netflix tool “Chaos Monkey” is a famous example of a chaos engineering tool. Chaos Monkey and similar tools will randomly cause service outages so organizations can continually practice business continuity and disaster recovery activities. Of course, simply unleashing “Chaos Monkey” in an organization that isn’t ready for it will not be productive. Exercising “blameless post-mortem” reviews of incidents in conjunction with other continuous improvement practices, such as planned interruptions, can help improve organizational maturity, so something like Chaos Monkey can be helpful.
Sources
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