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

Static analysis result for SHA-256 e6424c364f8c8635…

MALICIOUS

Office (OOXML) / .XLSX

2.01 MB Created: 2025-05-19 09:03:52 UTC Authoring application: Microsoft Excel 12.0000 First seen: 2025-05-20
MD5: 2686c9177ae51be8c6f051c46c3778b8 SHA-1: 5e9c20210428b7d3fd3ef139b42ab529bcc0632a SHA-256: e6424c364f8c863561c658608f0175cb78303e97abf3b0d690386adf0c69137a
60 Risk Score

Malware Insights

MITRE ATT&CK
T1559 Component Object Model Hijacking T1559.001 Component Object Model Hijacking: Component Object Model Hijacking

The file is an Excel document containing an embedded OLE object, identified as an Equation Editor object. This is a high-severity finding and a common technique used to exploit vulnerabilities in the Equation Editor component to execute arbitrary code. The document body content appears to be garbled or malformed, providing no clear user-facing lure.

Heuristics 2

  • Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR
    Embedded OLE object xl/embeddings/Ml8.zIX 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
4d0b09e43c390224ad34c259d3015b6c061a30fa73abf8f3eee2e59f85519c0c		 ooxml-ole-object OOXML embedded OLE part: xl/embeddings/Ml8.zIX 2887168 bytes

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