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

Static analysis result for SHA-256 db14fae6a9da9266…

MALICIOUS

Office (OOXML) / .XLSX

2.20 MB Created: 2025-08-06 23:16:59 UTC Authoring application: Microsoft Excel 12.0000
MD5: 7f98ef98a720f598bccbd53e86c51a21 SHA-1: 26de91b03a64663034fffac3e55e12f0168e6bfe SHA-256: db14fae6a9da9266b83e62f379c92d93e7e58826e63c0f28ca3ec178740a5584
60 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The file is an Excel spreadsheet containing an embedded OLE object, specifically identified as an Equation Editor object. This is a known technique for delivering malicious content. The document body, though heavily obfuscated, contains what appears to be a list of items with quantities, suggesting a lure for a scam or phishing attempt. No scripts were extracted, but the presence of the OLE object is a strong indicator of malicious intent.

Heuristics 2

  • Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR
    Embedded OLE object xl/embeddings/307J.RSh 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
fd3601d63898f38aa05dc4ce083fd772610984247089da7f743716be7f434a0c		 ooxml-ole-object OOXML embedded OLE part: xl/embeddings/307J.RSh 3074560 bytes

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