Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 eb29a5b1a1667984…

MALICIOUS

Office (OOXML)

84.6 KB Created: 2006-09-16 00:00:00 UTC Authoring application: Microsoft Excel 12.0000 First seen: 2019-04-18
MD5: 5e0d66d98904d3ab44960e0670fab92d SHA-1: f187959d6afa483d18c69b9e334575781009cd31 SHA-256: eb29a5b1a1667984bd77b741c8902fa5462902cf874fddb20d180a16b361add2
60 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The sample is an OOXML file containing an embedded OLE object, specifically identified as an Equation Editor object. This strongly suggests exploitation of a known vulnerability within the Equation Editor component to achieve code execution. No further details on the payload or specific exploit chain were available from static analysis.

Heuristics 2

  • Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR
    Embedded OLE object xl/embeddings/oleObject1.bin 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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
ooxml_oleobject_00.bin ooxml-ole-object OOXML embedded OLE part: xl/embeddings/oleObject1.bin 4608 bytes
SHA-256: 0bfa621570fd2f367b06bf374406f027873b583519cfeb727ee8f65d02761478

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