# Execution Dependency
Software may require certain run-time or library dependencies consistent with normal software development and deployment. For example, software may require the presence of a .NET or Java runtime or to be run by a webserver that supports PHP. Unlike in **Conditional Execution ([B0025](../execution/conditional-execution.md))**, this dependency is not because of an explicit check coded into the malware by the author.
## Use in Malware
|Name|Date|Method|Description|
|---|---|---|---|
|[**Adwind jRAT**](../xample-malware/adwind-jrat.md)|2019|--|Adwind jRAT uses standard Java commands to mask its behavior. [[1]](#1)|
## References
[1] https://www.menlosecurity.com/blog/hiding-in-plain-sight-new-adwind-jrat-variant-uses-normal-java-commands-to-mask-its-behavior/