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

Static analysis result for SHA-256 b5d7307fbbad84cf…

MALICIOUS

Office (OOXML) / .XLSX

713.4 KB Created: 2023-08-03 11:34:29 UTC Authoring application: Microsoft Excel 16.0300
MD5: 11045c94e14a70f1590829d1a37d953f SHA-1: cb5532912ecc06de555cbcad1ae2453206a400a3 SHA-256: b5d7307fbbad84cf2ecd8b6f48190241c0b5b6e18445570a12d914e69b7ea0ab
60 Risk Score

Malware Insights

MITRE ATT&CK
T1559.001 Component Object Model Hijacking

The sample is an Excel file containing an embedded OLE object identified as an Equation Editor. This is a common technique used to exploit vulnerabilities or deliver second-stage malware. The presence of the Equation Editor object is a strong indicator of malicious intent, likely to execute arbitrary code upon interaction.

Heuristics 2

  • Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR
    Embedded OLE object xl/embeddings/Gn3.fqKRIMj 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
dc7aef0b55af78d67f01621f14909c57004b051da834e0e56bec4e34df0230c0		 ooxml-ole-object OOXML embedded OLE part: xl/embeddings/Gn3.fqKRIMj 1004032 bytes
ooxml_oleobject_00_ole10native_00.bin
a4cd0a770cf5e72ed0b84b7709ee0ce022c1994948f007ffa5a65032e23660d0		 ole-package OOXML xl/embeddings/Gn3.fqKRIMj Ole10Native stream: OlE10NaTIvE 993510 bytes

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