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

Static analysis result for SHA-256 d9c15c4cb8116296…

MALICIOUS

Office (OOXML) / .XLSX

711.2 KB Created: 2023-08-03 11:34:29 UTC Authoring application: Microsoft Excel 16.0300
MD5: 9ec58df6c589d07692e8803d6ee3d7a8 SHA-1: ed962871a2bfcec5cef92961ae71f7f0d6e902e6 SHA-256: d9c15c4cb81162960a93c6d15ed122a4ca6bff671fae53ae8f415c8030b025e6
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 high-severity finding, indicating a likely attempt to exploit a vulnerability within the Equation Editor component to achieve code execution. No specific family could be identified, but this is a common delivery method for exploits.

Heuristics 2

  • Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR
    Embedded OLE object xl/embeddings/rqX.IIHnUe 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
c8b9dca4e6c2ea3a50bf61d16ffb5c5f9e300097d691d387141b27875c9359d3		 ooxml-ole-object OOXML embedded OLE part: xl/embeddings/rqX.IIHnUe 1042432 bytes
ooxml_oleobject_00_ole10native_00.bin
03f94b2d581d5700674e1759be84950066f29a568e3ca582db1ed7e37d5479f4		 ole-package OOXML xl/embeddings/rqX.IIHnUe Ole10Native stream: olE10naTIVe 1031859 bytes

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