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mukul975
51 lines
2.3 KiB
Markdown
51 lines
2.3 KiB
Markdown
# PowerShell Deobfuscation Workflows
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## Workflow 1: Automated Multi-Layer Deobfuscation
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```
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[Obfuscated Script] --> [Identify Techniques] --> [Remove Tick Marks]
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v
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[Resolve Concatenation]
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v
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[Decode Base64 Layers]
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v
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[IEX -> Write-Output]
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v
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[Extract Final Payload]
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```
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## Workflow 2: AST-Based Analysis
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```
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[Script Input] --> [Parse AST] --> [Walk Expression Nodes] --> [Evaluate Expressions]
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v
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[Reconstruct Commands]
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v
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[Extract IOCs]
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```
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## Workflow 3: Dynamic Sandbox Deobfuscation
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```
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[Obfuscated Script] --> [Execute in Sandbox] --> [Capture ScriptBlock Logs]
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v
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[Event ID 4104 Analysis]
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v
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[Reconstruct Execution Chain]
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```
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### Steps:
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1. **Enable Logging**: Enable PowerShell ScriptBlock logging (Event ID 4104)
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2. **Execute**: Run obfuscated script in isolated sandbox
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3. **Collect**: Gather all ScriptBlock log entries
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4. **Reconstruct**: Assemble deobfuscated script from logged blocks
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5. **Extract**: Pull IOCs from the reconstructed clear-text script
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