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

Static analysis result for SHA-256 e0c223c32b5a099b…

MALICIOUS

Office (OOXML) / .XLSX

2.20 MB Created: 2025-08-28 00:09:56 UTC Authoring application: Microsoft Excel 12.0000 First seen: 2025-09-03
MD5: 75285dfbeec0b4c75f74c9043f4f9669 SHA-1: 84619f95b99b705abac7111f02c1481bd8d668ca SHA-256: e0c223c32b5a099b8be2c78731102f857ef5f9fb641a0e22542dd6dea5d125d7
80 Risk Score

Malware Insights

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

The file is an OOXML document containing an embedded OLE object, identified as an Equation Editor object. The presence of a 'SE_ENABLE_LURE' heuristic firing indicates that the document likely prompts the user to enable macros or content, a common tactic for malware droppers. This suggests the embedded object is intended to execute malicious code.

Heuristics 3

  • Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR
    Embedded OLE object xl/embeddings/E2xGcS.NZxq 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
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
ooxml_oleobject_00.bin
9268ac093219e53e18984525264048397ada690b4554f647d767a482d1f291fb		 ooxml-ole-object OOXML embedded OLE part: xl/embeddings/E2xGcS.NZxq 3040256 bytes

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