# AppCompatCacheParser

AppCompatCacheParser is a command line tool developed by Eric Zimmerman, to process the ShimCache (AppCompatCache) on Windows operating systems, identifying items such as:

* Executable filepaths
* Timestamp of last execution

Results can output the hive entries files into .csv for further analysis. Further Information the ShimCache can be found on [Darkcybe - Evidence of Execution](https://darkcybe.github.io/posts/DFIR_Evidence_of_Execution/#shimcache-appcompatcache)

| Tool Name                                                          | Version | MITRE ATT\&CK Tactic                                  | MITRE ATT\&CK Technique |
| ------------------------------------------------------------------ | ------- | ----------------------------------------------------- | ----------------------- |
| [AppCompatCacheParser](https://ericzimmerman.github.io/#!index.md) | V1.5    | [Execution](https://attack.mitre.org/tactics/TA0002/) |                         |

## Instructions

### Parsing the ShimCache (AppCompatCache) on a Live System

```powershell
appcompatcacheparser.exe --csvf %OUTPUT_FILENAME%.csv --csv %OUTPUT_DIRECTORY%
```

### Parsing the ShimCache (AppCompatCache) from a Forensic Copy

```powershell
appcompatcacheparser.exe -f /PATH/TO/SYSTEM hive --csvf %OUTPUT_FILENAME%.csv --csv %OUTPUT_DIRECTORY%
```

#### Interesting Fields

* **Path:** Full filepath of executable
* **LastModifiedTimeUTC:** Timestamp in UTC of last modification
* **Executed:** Execution flag (applications can be shimmed without being executed)

#### **Output**

<figure><img src="/files/EplHw0iKkEuWWc3lFjcW" alt="AppCompat Cache Parser"><figcaption></figcaption></figure>

### Sources

* [Eric Zimmerman](https://ericzimmerman.github.io/#!documentation.md)


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