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

Static analysis result for SHA-256 56789958448c884b…

MALICIOUS

Office (OOXML) / .XLSX

727.2 KB Created: 2010-06-04 08:55:28 UTC Authoring application: Microsoft Excel 15.0300 First seen: 2022-03-08
MD5: f4d8bc53bca14e93f5d347eb2f778ae5 SHA-1: 79e11165473c3a34a344048a882161b4a3d11225 SHA-256: 56789958448c884b609b5a9694d94483145a9a69706e201fef9dd3859d678f53
66 Risk Score

Malware Insights

MITRE ATT&CK
T1559.001 Component Object Model Hijacking T1204.002 Malicious File

The file is an Office document containing an embedded OLE object, identified as an Equation Editor exploit. This exploit is a known method for delivering malicious payloads. The embedded OLE object is likely designed to be opened by the user, triggering the exploit and initiating a download or execution chain. No scripts were extracted, but the presence of the Equation Editor exploit strongly suggests a payload delivery mechanism.

Heuristics 2

  • Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR
    Embedded OLE object xl/embeddings/Sq.DIvMDZO 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
95ad4bce16a8709a74c6265ad62f44336d413dea56e1e0c23d41ccde918176d0		 ooxml-ole-object OOXML embedded OLE part: xl/embeddings/Sq.DIvMDZO 1024512 bytes
ooxml_oleobject_00_ole10native_00.bin
f416de451466e16e013af9a8f9c20af612f8c3fd9c3bd5748daa3e23fd2ef73e		 ole-package OOXML xl/embeddings/Sq.DIvMDZO Ole10Native stream: oLe10NATiVE 1014253 bytes

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