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

Static analysis result for SHA-256 bc94e39535b32bfc…

MALICIOUS

Office (OOXML) / .XLSX

2.12 MB Created: 2025-06-12 01:12:31 UTC Authoring application: Microsoft Excel 12.0000
MD5: 5aaaf75746960fa971089f06f004d5bf SHA-1: ee422617b62831dd303507ad823b6fb3000b05eb SHA-256: bc94e39535b32bfc62b6d7b56113e6bb6e1bbdc10a02b57febdfb0cda9d89448
60 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 potentially exploitable component within the document. This is a common technique used to deliver malware by leveraging vulnerabilities in the Equation Editor application. No further IOCs were extracted from this sample.

Heuristics 2

  • Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR
    Embedded OLE object xl/embeddings/5ZjoaAva.qg9TJ 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
034284c289c3b9be8e5493cfc0978ab227186881d582eaed0187317165b461be		 ooxml-ole-object OOXML embedded OLE part: xl/embeddings/5ZjoaAva.qg9TJ 3021824 bytes
ooxml_oleobject_00_ole10native_00.bin
67a9c41585e02aed815323d3a1fabaf577bbdc37d889d4143885db81ddac4674		 ole-package OOXML xl/embeddings/5ZjoaAva.qg9TJ Ole10Native stream: OlE10nATIve 2995287 bytes

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