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

Static analysis result for SHA-256 89a5fb9cd6a9c329…

MALICIOUS

Office (OOXML) / .XLSX

618.8 KB Created: 2023-08-03 11:34:29 UTC Authoring application: Microsoft Excel 16.0300
MD5: d5c8816b7ec644147ad3de2f365579d8 SHA-1: c077c1005c4504d7b7555b6c24ac96af579d0935 SHA-256: 89a5fb9cd6a9c3294c06ac86fec7c4a3fc538c15fe1ab2930c2370bfdb983a69
60 Risk Score

Malware Insights

MITRE ATT&CK
T1559.001 Component Object Model Hijacking

The high-severity heuristic firing for 'Equation Editor OLE object' strongly indicates the presence of a malicious embedded object. This is a common technique used to exploit vulnerabilities in Microsoft Office applications, often leading to the execution of arbitrary code. The embedded OLE object is the primary indicator of compromise.

Heuristics 2

  • Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR
    Embedded OLE object xl/embeddings/qQ.4vcu 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
1105d93576c3a94ac29aa8cfbd53d3d0169e17a8f514991f9f42600b3907cdd3		 ooxml-ole-object OOXML embedded OLE part: xl/embeddings/qQ.4vcu 905216 bytes
ooxml_oleobject_00_ole10native_00.bin
83030067fba210c9abf9f6e36968536941758ffe37c943e987bc763b655fee4a		 ole-package OOXML xl/embeddings/qQ.4vcu Ole10Native stream: oLe10naTIVe 895734 bytes

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