GetProcAddress → Retrieves the address of an exported function or variable from the specified dynamic-link library (DLL).From those libraries the sample points to 4 functions.The sample is importing four libraries Kernel32.dll, User32.dll, Shell32.dll, comctl32.dll.Some of the most important strings are UPX0, UPX1, VirtualProtect, Kernel32.Dll, SHfileoperation, From the extracted stings, we can determine the following In this section i will learn to extract strings from packed malware using Bintext but in this time I will use pestudio to extract strings from a sample so let us load sample in pestudio and from main window go to stings. Let us close the window to do the last step that is checking the entropyĭiE show that section (1) is packed as it has high entropy 6.84995 which is an important indicator that section is packed or compressed and at the top of the window we see the file is packed in the rate of 95% Srings Extractions Now you can click close in order to back main window, click on Signatures to show the signature that used by DiE to detect that the sample is packed with UPX. If you click in this button >, You will get the same previous details the sample is being using the packer which UPX.In the last tool which called Detect it Easy (DiE), I will load a sample on it and we can see the results. In this time I will load the sample in pestudio, which amazing tool that used by malware analyst in static analysis,it has many options that helps malware analyst to do initialĪnalysis well, when we open sample in pestudio we see in main window the property signature with the UPX and this is another indicator, this indicator tells us that a sample do something UPX (Ultimate Packer for Executables) is an open source executable packer supporting a number of file formats from different operating systems.we see that the sample does something with upx.In this section, I will learn how to identify packed malware, so I will load the sample in Exeinfo PE tool and see the results. We can donload the sample from here Tools Malware, performs his analysis and in this article I will discuss unpacking malware with many tools to deal with a lot of tools in analysis packed malware. I am happy to write about unpacking malware, unpacking malware is very important concept that any malware analyst must deal with it to extract the malicious code from packed
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |