If the same exe was run from different locations - different. If the app was deleted and then reinstalled? What the firtst run time will be? Hence, the last time run might be different. Also, there is latency issue - some apps are not closed upon clicking X, but remain running in background. With Win8 - additional run times recorded. For systems with solid state drives it’s also disabled. Rip.exe -r SYSTEM -p prefetch # to show whether prefetch is enabled 🤨 Caveats Prefetch can be disabled in registry C:\Windows\System32\config\SYSTEM, key 🔑: HKLM\SYSTEM\CurrentControlSet\Control\SessionManager\MemoryManagement\PrefetchParameters\Enable Prefetcher: key All prefetch have a signature at offset 4th byte. If collecting prefetch on a live system, run volatile collection tools before that and collect pf files to avoid overwriting oldest prefetch with prefetch for live response tools (or disable prefetch before collection). The FS timestamps will show that the file was first executed recently when it’s not quite that straithforward. Some time after that the executable is run again and the pf file is created again. Its pf file was overwritten (prefetch keeps 1024 entries). However, consider a scenario when a program was run long time in the past, wasn’t run for a while after that. The last time it was run - a pf’s file Modified date and time. The first time the executable is run, a pf file is created. File size can be used to search for the same process with a different name on a different machine.įilesystem Timestamps.
Central repository of what was run on the system. Forensics value - tracks the execution of programs.Missing Process + libraries and resources for each process.Each prefetch file name follows the pattern: -.pf. Prefetch is for efficiency of starting processes and their resources (movies for media players, spreadsheets for Excel for example). Key 🔑: Classes\Installer\Products - installed using Miscrosoft installer (those with msi extension). Separate sub-keys for different versions of a program. Key 🔑: Wiw6432Node ( SYSTEM hive root node) - those that run a 32-bit mode.
Defines between those that were installed for a specific user or system-wide. Key 🔑 Microsoft\Windows\CurrentVersion\Appx\AppxAllUserStore for installed Microsoft applications. The last write time is when the application was installed. There can be some data for programs that do not exist on the system anymore. Key 🔑: Microsoft\Windows\CurrentVersion\Uninstall. 100% prove that the program was executed. \Windows \appcompat \Programs \Amcache.hveĭrwtsn32.log, traps a crashing program. \Windows \appcompat \Programs \RecentFileCache.bcf
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