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

Static analysis result for SHA-256 a4eea523bb2ab861…

MALICIOUS

Office (OOXML) / .XLSX

591.7 KB Created: 2024-03-25 10:30:17 UTC Authoring application: Microsoft Excel 12.0000
MD5: b4f7406a94723d598aab5b04ee8e4f39 SHA-1: 686c3ac1af6a323d949ba28b0ad740803bbbedde SHA-256: a4eea523bb2ab861736ecbb640fc0f2bb63dc5cded66d1cbd3ee8b203baa5e4d
60 Risk Score

Malware Insights

MITRE ATT&CK
T1559.001 Component Object Model Hijacking

The primary heuristic indicates the presence of an embedded OLE object, specifically identified as an Equation Editor object. This is a common technique used to exploit vulnerabilities in Microsoft Office applications, often leading to the execution of arbitrary code. The embedded object's path is noted as an IOC.

Heuristics 2

  • Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR
    Embedded OLE object xl/embeddings/26lLMny9p.JnHjYo 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
60962654b756aec0d8d74f442fba3f26802a0d418d14c981e8d81a639424677c		 ooxml-ole-object OOXML embedded OLE part: xl/embeddings/26lLMny9p.JnHjYo 812032 bytes
ooxml_oleobject_00_ole10native_00.bin
2195694e980b09685ec1328fec273a48af172f356b969ecb4e05a23636e95975		 ole-package OOXML xl/embeddings/26lLMny9p.JnHjYo Ole10Native stream: oLE10NaTive 803087 bytes

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