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

Static analysis result for SHA-256 2a59f6e58c5a5272…

MALICIOUS

Office (OOXML) / .XLSX

745.0 KB Created: 2022-08-10 18:51:50 UTC Authoring application: Microsoft Excel 16.0300
MD5: d4c246c9301a1d9ec4771142302d3cc0 SHA-1: da51a281af29e7968c732bdfa0ec6e6c5f37329a SHA-256: 2a59f6e58c5a5272d08c21d2e24e901afd46d2012ba4b49066ff5bda07282ee3
60 Risk Score

Malware Insights

MITRE ATT&CK
T1559.001 Component Object Model Hijacking

The file is an Excel document containing an embedded OLE object identified as an Equation Editor. This is a common technique used to exploit vulnerabilities in the Equation Editor component to deliver malicious payloads. The document body contains what appears to be financial or shipping data, likely a lure to entice the user to open the document and trigger the exploit.

Heuristics 2

  • Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR
    Embedded OLE object xl/embeddings/xej0kFHb.tG7ma 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
f57e2e2bb805de9d813c99d329b0ea178fe2ca1b8ab385c97457a30ae8e33659		 ooxml-ole-object OOXML embedded OLE part: xl/embeddings/xej0kFHb.tG7ma 1074176 bytes
ooxml_oleobject_00_ole10native_00.bin
cca179ebed6b92709cc2bf8b58e4fcf7ec1c055f38472b3af209fb44448a0e04		 ole-package OOXML xl/embeddings/xej0kFHb.tG7ma Ole10Native stream: Ole10nATIVE 1063029 bytes

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