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

Static analysis result for SHA-256 4980baaa52e681af…

MALICIOUS

Office (OOXML) / .XLSX

2.13 MB Created: 2025-06-12 01:12:31 UTC Authoring application: Microsoft Excel 12.0000
MD5: 1f25a7524def309c2fc6d21e3fe422f8 SHA-1: 4aed9cd4a3426a1ebaa02552cdbc6194793a94e7 SHA-256: 4980baaa52e681afdd6e50cef34200afca41f31977fa3a83dbbbb63254647ad3
60 Risk Score

Malware Insights

MITRE ATT&CK
T1559.001 Component Object Model Hijacking

The sample is an OOXML file containing an embedded OLE object identified as an Equation Editor. This is a common technique for exploiting vulnerabilities or delivering second-stage malware. The presence of the Equation Editor OLE object is a strong indicator of malicious intent, likely to execute arbitrary code.

Heuristics 2

  • Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR
    Embedded OLE object xl/embeddings/7Gdkf.yWPIKp 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
32fe9b60ff74f911abc8c4a4b92e305d2f2c12936ee8bf3d3a5b1d8807dc02e9		 ooxml-ole-object OOXML embedded OLE part: xl/embeddings/7Gdkf.yWPIKp 3000320 bytes
ooxml_oleobject_00_ole10native_00.bin
991285710171a0c0e46152d598c5ef9fcead75f970bac2a2b9127a86d2cbcc50		 ole-package OOXML xl/embeddings/7Gdkf.yWPIKp Ole10Native stream: OlE10NATIVe 2974324 bytes

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