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

Static analysis result for SHA-256 d82c809d1bf1753a…

MALICIOUS

Office (OOXML) / .XLSX

2.15 MB Created: 2025-06-16 01:57:26 UTC Authoring application: Microsoft Excel 12.0000 First seen: 2025-06-16
MD5: ff430ffe993f4f00fd93bae3c8299663 SHA-1: 5dd183826552b7a8aef196b03f642b0c89d97ae0 SHA-256: d82c809d1bf1753a554c703cccabd4ed54d10a77044cb1f3ccb3cee3c4794883
60 Risk Score

Malware Insights

MITRE ATT&CK
T1559.001 Component Object Model Hijacking

The sample is an Office document containing an embedded OLE object, identified as an Equation Editor object. This is a high-severity finding and a common technique for exploiting vulnerabilities or delivering secondary payloads. The document body content is not directly indicative of a specific lure, but the presence of the embedded object strongly suggests an attack vector leveraging this component.

Heuristics 2

  • Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR
    Embedded OLE object xl/embeddings/O0ziwg9.C7Ypeuo 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
987ab9a8fb3e0df18cb313cb58ee277a6b09f58f09cef180093d224d4487a86a		 ooxml-ole-object OOXML embedded OLE part: xl/embeddings/O0ziwg9.C7Ypeuo 3035136 bytes

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