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

Static analysis result for SHA-256 4e6e679f6954dd85…

MALICIOUS

Office (OOXML) / .XLSX

1.98 MB Created: 2025-06-12 01:12:31 UTC Authoring application: Microsoft Excel 12.0000
MD5: a095bbf44e025d32bf62f38b66e5a96a SHA-1: f27651e52be5045ddc5f2f063c2c2defa6b55e85 SHA-256: 4e6e679f6954dd85ef726475dabc90b3bf28f84b34c625b494729d625eea9e30
60 Risk Score

Malware Insights

MITRE ATT&CK
T1559.001 Component Object Model Hijacking

The sample is an Excel file containing an embedded OLE object identified as an Equation Editor. This is a known method for exploiting vulnerabilities in Microsoft Office applications to execute arbitrary code. The presence of the Equation Editor OLE object strongly suggests an exploit delivery attempt.

Heuristics 2

  • Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR
    Embedded OLE object xl/embeddings/GJtRYvt.1eY 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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
ooxml_oleobject_00.bin
49ac4a4c5756d21d237d3443135dc7e96715a40f7aa8e49701320beb3f7c6b4f		 ooxml-ole-object OOXML embedded OLE part: xl/embeddings/GJtRYvt.1eY 2811904 bytes
ooxml_oleobject_00_ole10native_00.bin
3bf5bbcdddd57a7302a836d754a99759ae2a40078583b8c3ea98db646be20d1e		 ole-package OOXML xl/embeddings/GJtRYvt.1eY Ole10Native stream: oLe10NatIVE 2787806 bytes

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