11/8/2022 0 Comments Programdata installmate custom.dllThe first one looks for unsigned DLLs that were loaded by rundll32.exe/regsvr32.exe, while the other looks for signed software that loads an unsigned DLL. To start hunting based on the hypothesis we described, we created two XQL queries. Attack Trends in the Wild Related to Unsigned DLLs The next section will introduce several findings based on the above hypothesis. Reviewing the results of the above techniques in the wild revealed that the most common unprivileged paths to load malicious unsigned DLLs are the folders and sub-folders of ProgramData, AppData and the users’ home directories. This way, a benign application will load a malicious payload with the name of a known DLL.
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