This analysis is a follow-up to the investigation titled ‘Intrusion into Middle East Critical National Infrastructure’, conducted by the FortiGuard Incident Response Team (FGIR), which investigated a long-term cyber intrusion targeting critical national infrastructure (CNI) in the Middle East.
The report revealed that threat actors had installed numerous web shell servers on the compromised system. In this follow-up, we conducted a deep analysis of one of these web shell servers, named UpdateChecker.aspx, which was deployed on the Microsoft IIS (Internet Information Services) server of the compromised system.
Read more…
Source: Fortinet
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