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

Static analysis result for SHA-256 d02ebd5b466ec0fe…

MALICIOUS

Office (OOXML) / .XLSX

2.84 MB Created: 2025-09-10 01:57:00 UTC Authoring application: Microsoft Excel 15.0300 First seen: 2026-06-29
MD5: 6d6006b35835e520440f141be9f79938 SHA-1: c98f8a672515e4939f64528617c254aeed494a4e SHA-256: d02ebd5b466ec0feaa61782176f1c1bba60560468f708f7529cd1746b7a17880
100 Risk Score

Heuristics 3

  • Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR
    Embedded OLE object xl/embeddings/OOtuSPSbN.qaNOlI contains the Equation Editor CLSID, the legacy component exploited by CVE-2017-11882, CVE-2018-0802, and CVE-2018-0798.
  • Equation Editor object carries payload-like Ole10Native stream high OLE_EQUATION_OLE10NATIVE_PAYLOAD_ANOMALY
    Embedded OLE object declares the Equation Editor CLSID but stores a large high-entropy Ole10Native stream with malformed package sizing. This is an exploit-shaped Equation/OLE payload container seen in malicious OOXML samples. It is not assigned to a specific CVE unless the MTEF/Equation Native primitive also matches.
  • Embedded OLE object medium OOXML_OLE_OBJECT
    Document contains an embedded OLE object

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
ooxml_oleobject_00.bin ooxml-ole-object OOXML embedded OLE part: xl/embeddings/OOtuSPSbN.qaNOlI 2873856 bytes
SHA-256: 84bfaf114b79c625037e5df0f681256dfd1ddc51f724e2adcfafa327da8f4a01
ooxml_oleobject_00_ole10native_00.bin ole-package OOXML xl/embeddings/OOtuSPSbN.qaNOlI Ole10Native stream: Ole10nATIVe 2849137 bytes
SHA-256: 2c464cdc205badb07c82f35503c53e3480c7e40ad7cf18b40f8141dd3c3afeba

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