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

Static analysis result for SHA-256 8cc3c806eaedf3e8…

MALICIOUS

Office (OOXML) / .XLSX

715.7 KB Created: 2023-11-17 18:26:59 UTC Authoring application: Microsoft Excel 12.0000
MD5: 1aff303800283284f11e5d341ceef413 SHA-1: 7189ef3928262d2529371c38f12e03a41d3a2bec SHA-256: 8cc3c806eaedf3e8c3a75c8915371be446331989a09023f57d22ca89e5b81eca
60 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The file is an Excel spreadsheet containing an embedded OLE object, specifically identified as a Microsoft Equation Editor object. This type of object is known to be vulnerable to code execution exploits, such as CVE-2017-11882. The presence of this object strongly suggests an attempt to exploit this vulnerability for arbitrary code execution.

Heuristics 2

  • Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR
    Embedded OLE object xl/embeddings/NO.VX 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
f9770571e6d26ce5a53d4a8b22693ebc23fb15bc6b4ebc434ce406147c4960cd		 ooxml-ole-object OOXML embedded OLE part: xl/embeddings/NO.VX 971264 bytes
ooxml_oleobject_00_ole10native_00.bin
74b9c83ffd264ff5cd2e923d647c22da4be97852ed255fb18d506d940e3d2d80		 ole-package OOXML xl/embeddings/NO.VX Ole10Native stream: Ole10NatIve 961103 bytes

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