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

Static analysis result for SHA-256 9f3920e2766e90f8…

MALICIOUS

Office (OOXML) / .XLSX

732.5 KB Created: 2022-08-10 18:51:50 UTC Authoring application: Microsoft Excel 16.0300
MD5: b74173f6e7d88017885a93f1493ed30b SHA-1: 611ca980cb15b635b0f1826590d0b45bba362491 SHA-256: 9f3920e2766e90f8901e640afa7be57d965f5c3eb8e95bbfb4fbefc38767ab05
60 Risk Score

Malware Insights

MITRE ATT&CK
T1559.001 Component Object Model

The sample is an Excel spreadsheet containing an embedded OLE object identified as an Equation Editor. This is a common technique used to deliver exploits, often leveraging vulnerabilities in the Equation Editor component to execute malicious code. The document body appears to be financial or order-related data, likely serving as a lure.

Heuristics 2

  • Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR
    Embedded OLE object xl/embeddings/4wan.UxrMgti 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
3b2e9c952b66cd46182350cc60008ed17943f35011816292cddf90c86867fb23		 ooxml-ole-object OOXML embedded OLE part: xl/embeddings/4wan.UxrMgti 988672 bytes
ooxml_oleobject_00_ole10native_00.bin
c4715dfd3ed12e866913f20b9f45cb7ebe29ee58be7e49b8672e0c45ebcbf5ff		 ole-package OOXML xl/embeddings/4wan.UxrMgti Ole10Native stream: ole10nAtivE 978013 bytes

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