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Andromeda Bot Analysis part 2

By Ayoub Faouzi

Excerpt

Now, you get the original Andromeda build file. Load the unpacked sample at OllyDBG. As before, after the stack frame at the EP, you see that the malware is looking to load API's address using the PEB_LDR_DATA structure, but this time instead of kernel32.dll; the malware try to find ntdll.dll base address, then, it will parse the EAT, hash each APIs then make comparison to find the needed APIs :

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The opening of the report, shown for reference. The full report, with its figures and indicators, is published by Infosec Institute on resources.infosecinstitute.com.

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