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

Static analysis result for SHA-256 a7cadf821748acfd…

MALICIOUS

Office (OOXML) / .XLSX

2.80 MB Created: 2025-09-10 01:57:00 UTC Authoring application: Microsoft Excel 15.0300
MD5: d0d16f1f455033f0b68d97f905a95478 SHA-1: ede91aece9b2a2474cbb5e446b5e5f0422f3c3a5 SHA-256: a7cadf821748acfd0e86a605995fb7b7fa898d8553d414d9bcec623cd3b98a1b
62 Risk Score

Malware Insights

MITRE ATT&CK
T1559.001 Component Object Model Hijacking

The high-severity heuristic firing for Equation Editor OLE object indicates the presence of a known exploit vector within the Excel file. This object is commonly used to exploit vulnerabilities, likely to download and execute a secondary payload. The embedded OLE object is the primary indicator of malicious intent.

Heuristics 2

  • Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR
    Embedded OLE object xl/embeddings/1cCE0SYn.lXNVdN 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
d87a19fc9c02f65dffd44cd8844911c0d19aa9547f58d6c3a270e8d324d00159		 ooxml-ole-object OOXML embedded OLE part: xl/embeddings/1cCE0SYn.lXNVdN 2866688 bytes
ooxml_oleobject_00_ole10native_00.bin
8f4016801e561513c442600136afafff429f81dd745b0ce8647fc8da0e8cb926		 ole-package OOXML xl/embeddings/1cCE0SYn.lXNVdN Ole10Native stream: oLE10NATiVE 2842068 bytes

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