This should not be a surprise to people who use forensic tools on a daily basis, but it is a good reminder. I just noticed two great posts, Dumping Memory to extract Password Hashes Part 1 and Dumping Memory to extract Password Hashes Part 2, on the Attack Research blog. They show how to exploit a system with Metasploit, upload the Meterpreter, upload Mantech's MDD memory dumper, dump memory, download it to an attacker's system, and then follow instructions from Forensiczone to use Moyix's volreg extensions to the Volatility Framework to extract passwords.
I would be curious to see if intruders are really using methodologies like this. One way to identify such activity would be to watch for files being exfiltrated from the enterprise that match common memory sizes, such as 512 MB, 1 GB, 2 GB, 4 GB, and so on.
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