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

Static analysis result for SHA-256 c2936fcf2b779dd7…

MALICIOUS

Office (OOXML) / .XLSX

715.3 KB Created: 2010-06-04 08:55:28 UTC Authoring application: Microsoft Excel 15.0300
MD5: 7e0819157b56ab0bdfee5b8ee2777684 SHA-1: 2e3fa3bd40b6ffcf30081007bb265a649b72f61c SHA-256: c2936fcf2b779dd7ffc2f8d36ab14642cde2245080477583915331f7323a5c80
60 Risk Score

Malware Insights

MITRE ATT&CK
T1559.001 Component Object Model Hijacking

The sample is an OOXML file containing an embedded OLE object identified as an Equation Editor object. This is a common technique used to exploit vulnerabilities in the Equation Editor component to execute arbitrary code. The presence of this object strongly suggests a malicious intent, likely to deliver a secondary payload.

Heuristics 2

  • Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR
    Embedded OLE object xl/embeddings/XVb.EovyqZy 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
3fa10d8721555e987584d3560fd240ea317f82ead6453473a22ee2c29fa7505f		 ooxml-ole-object OOXML embedded OLE part: xl/embeddings/XVb.EovyqZy 989184 bytes
ooxml_oleobject_00_ole10native_00.bin
c052d87df07476a63d15de343171ab9bbb5cbbd12bd94c65ac1b89652d4d3511		 ole-package OOXML xl/embeddings/XVb.EovyqZy Ole10Native stream: OLE10NatIVE 978575 bytes

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