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Products & ServicesSecurity OperationsThreat ResearchAI ResearchNaked SecuritySophos Life The critical vulnerability in Apache’s Log4j Java-based logging utility (CVE-2021-44228) has been called the “most critical vulnerability of the last decade.” Also known as Log4Shell, the flaw has forced the developers of many software products to push out updates or mitigations to customers. And Log4j’s m
Products & ServicesSecurity OperationsThreat ResearchAI ResearchNaked SecuritySophos Life A new ransomware attack method takes defense evasion to a new level—deploying as a full virtual machine on each targeted device to hide the ransomware from view. In a recently detected attack, Ragnar Locker ransomware was deployed inside an Oracle VirtualBox Windows XP virtual machine. The attack payload was
Products & ServicesSecurity OperationsThreat ResearchAI ResearchNaked SecuritySophos Life
If the exploit works, then the payload is downloaded and decrypted by the shellcode, using the aforementioned key. Angler uses different keys according to the exploitation path (Internet Explorer, Flash, Silverlight – at least two keys for each are currently known). After decrypting the payload, the shellcode checks the header to identify if the payload is yet more shellcode (which starts with do-
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