PEStudio¶
What PEStudio does¶
Using this tool
PEStudio supports malware analysis. In this guide, you will use it to triage a known training executable and record structure, imports, and indicators. Follow the steps below and keep the output with your notes.
Tool guide at a glance¶
Triage a known training executable and record structure, imports, and indicators.
An inert or purpose built training sample stored in a disposable isolated analysis VM.
A static observation or capability finding with sample hash, tool output, and confidence statement.
Evidence and safety
Do not execute unknown samples on SUSA. Disable shared folders and credentials, and use only authorised training material. Record the input identifier, tool version, relevant commands or settings, time and time zone, output location, and any errors or limitations as you work.
Choose your journey¶
01Understand the evidenceLearn the malware analysis concepts and limitations.Complete when you can explain what the evidence can and cannot show.Beginner · No tool required 02Follow the PEStudio guideFollow the steps and screenshots below.Complete when the documented workflow produces its expected output.Guided · SUSA workstation · Time varies 03Interactive labPractise the tool workflow in a safe browser simulation.Complete when the guided result is supported by the case evidence.Beginner · Browser only 04Full LabUse your own training data, keep the output and explain what you found.Complete when another analyst can reproduce and verify the outcome.Intermediate · Isolated lab
How the labs complement this guide
The Interactive Lab uses example records to practise investigation decisions. It does not run the installed tool or establish how that version behaves. The Full Lab uses your own training environment and evidence. Obtain or create the required input before starting; a case name in an exercise is not a download.
Accessing PEStudio in SUSA¶
PEStudio is a widely used, free static malware analysis tool for Windows that detects suspicious artifacts in executable files (PE, DLL) without running them. It assists security professionals and incident responders by identifying malicious indicators like packed code, hard coded URLs, and suspicious API imports.
Go to the Winitor download page and download the PEStudio basic version.
Extract the zip package to C:\Tools folder. This will extract all of its contents in C:\Tools\pestudio.
Double click pestudio to launch the application.
Static Malware Analysis with PEStudio¶
This method allows you to examine malware without running it, using tools that extract metadata, strings, headers, and indicators from the binary. It’s a safe way to assess risks and behaviours.
1. Launch PEStudio
On your analysis VM, open C:\Tools\pestudio\pestudio.exe.
Click File → Open and select your sample (e.g. C:\Tools\knr.exe).
2. Check the File’s Reputation
PEStudio will calculate hashes and, if you’re online, automatically check the file against VirusTotal. You can also manually copy the SHA256 and check it at VirusTotal.
3. Review File Details
Explore:
- Headers: Shows compiler info, timestamps
- Strings: Reveals embedded URLs, commands, and file paths
- Indicators: Flags potential signs of packing, obfuscation, or suspicious behaviours