Malicious Office (OOXML) / .XLSX — malware analysis report

Static analysis result for SHA-256 e32fdcb3ad405e6d…

MALICIOUS

Office (OOXML) / .XLSX

2.28 MB Created: 2025-09-22 22:56:50 UTC Authoring application: Microsoft Excel 12.0000
MD5: b6f5a393faeae06445dd41b87b06643d SHA-1: d489f2a5962acb0a00846c28506ff60657ffd36f SHA-256: e32fdcb3ad405e6da2bb91d706bce69f4d1823acebf8ad6e7f1cf667bc7f2465
80 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.001 Spearphishing Attachment T1059.005 Visual Basic

The file is an Office document containing an embedded OLE object, specifically identified as an Equation Editor object. The heuristic 'SE_ENABLE_LURE' indicates that the document likely contains content designed to trick the user into enabling macros or editing. This, combined with the embedded OLE object, suggests a delivery mechanism where the OLE object is executed upon enabling macros. No scripts were extracted, and the document body was truncated, limiting further analysis of the specific lure.

Heuristics 3

  • Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR
    Embedded OLE object xl/embeddings/QmA5mKzTK.k2MeD contains the Equation Editor CLSID, the legacy component exploited by CVE-2017-11882, CVE-2018-0802, and CVE-2018-0798.
  • Embedded OLE object medium OOXML_OLE_OBJECT
    Document contains an embedded OLE object
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
ooxml_oleobject_00.bin
4c0ae61c3074b0438038c5106da18126b0c300910b5501c82a5105d5e8295760		 ooxml-ole-object OOXML embedded OLE part: xl/embeddings/QmA5mKzTK.k2MeD 2959360 bytes
ooxml_oleobject_00_ole10native_00.bin
195d010039832472b4ecf16989be136679e4542243d5a57fd0ddcd1622e730b5		 ole-package OOXML xl/embeddings/QmA5mKzTK.k2MeD Ole10Native stream: OLe10nATIVE 2933594 bytes

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