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decompress-data.md

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ID C0025
Objective(s) Data
Related ATT&CK Techniques None
Version 2.1
Created 13 October 2020
Last Modified 5 December 2023

Decompress Data

Malware may decompress data.

Methods

Name ID Description
aPLib C0025.003 Malware decompresses data using aPLib.
IEncodingFilterFactory C0025.002 Malware decompresses data using IEncodingFilterFactory.
QuickLZ C0025.001 Malware decompresses data using QuickLZ.

Use in Malware

Name Date Method Description
Bagle 2004 C0025.003 Bagle decompresses data using aPLib. [1]

Detection

Tool: capa Mapping APIs
decompress data using aPLib Decompress Data::aPLib (C0025.003) --
decompress data via IEncodingFilterFactory Decompress Data::IEncodingFilterFactory (C0025.002) ole32.CoCreateInstance
decompress data using LZO Decompress Data (C0025) --
decompress data using QuickLZ Decompress Data::QuickLZ (C0025.001) --
decompress data using UCL Decompress Data (C0025) --
Tool: CAPE Class Mapping APIs
compression CAPE_Compression Decompress Data (C0025) RtlDecompressBuffer

References

[1] capa v4.0, analyzed at MITRE on 10/12/2022