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

Static analysis result for SHA-256 28edffbfd5fab960…

MALICIOUS

Office (OOXML) / .XLSX

690.2 KB Created: 2023-08-03 11:34:29 UTC Authoring application: Microsoft Excel 16.0300
MD5: 19a63c698e3faf5edee7536c9695a68b SHA-1: e06e7b8dc4e8ce290bef8fedb4b51450021b0fdf SHA-256: 28edffbfd5fab960a88aa8950137e7aafc23eeb5fa28cff8585054901c499b6d
60 Risk Score

Malware Insights

MITRE ATT&CK
T1559.001 Component Object Model Hijacking

The high-severity heuristic firing for an Equation Editor OLE object indicates the likely presence of an exploit embedded within the document. This is a common technique for delivering malicious payloads. No further IOCs or script content were extracted to provide more specific details.

Heuristics 2

  • Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR
    Embedded OLE object xl/embeddings/u8sryRo.sYCgi5k 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
6563cee90b4d059b2ae78b52b2aeced868ec6180b3d489387a38dbba64bee834		 ooxml-ole-object OOXML embedded OLE part: xl/embeddings/u8sryRo.sYCgi5k 996864 bytes
ooxml_oleobject_00_ole10native_00.bin
0150f896aa79ec18c954cb3ab9652cb32812cf4965a5f0b92d7d86c9922f0a27		 ole-package OOXML xl/embeddings/u8sryRo.sYCgi5k Ole10Native stream: ole10natiVE 986524 bytes

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