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

Static analysis result for SHA-256 92328d706a7aeb9a…

MALICIOUS

Office (OOXML) / .XLSX

2.08 MB Created: 2025-06-05 00:50:14 UTC Authoring application: Microsoft Excel 12.0000
MD5: c877c96e57a3b2b857d512c5349df6ef SHA-1: 3190547517a0dd6a131341ce2f375eb6a909cd4d SHA-256: 92328d706a7aeb9a026b1c865d9887cecaa66d1f2ad66ec760918dd5a064fc0d
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 common technique used to exploit vulnerabilities or deliver second-stage malware. The specific CLSID offset suggests a potential exploit vector. No document body or scripts were extracted, limiting further analysis of the payload.

Heuristics 2

  • Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR
    Embedded OLE object xl/embeddings/RuABdti.MYZ 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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
ooxml_oleobject_00.bin
7cc4bdd8599e4410ea8b07ff368cc2f6f99f55f705a9f13d9ce15f01935928bb		 ooxml-ole-object OOXML embedded OLE part: xl/embeddings/RuABdti.MYZ 2914816 bytes

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