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

Static analysis result for SHA-256 c718f770eb0fb285…

MALICIOUS

Office (OOXML) / .XLSX

589.9 KB Created: 2023-08-03 11:34:29 UTC Authoring application: Microsoft Excel 16.0300
MD5: ebdc58b867fa705f2b6c5e19af2b5431 SHA-1: 8204b0e9055e942297d1864d2936342372a5b2cf SHA-256: c718f770eb0fb2858c96bec9eb2c3651e6dd121df2c8993e2aa495ebe3083200
60 Risk Score

Malware Insights

MITRE ATT&CK
T1559.001 Component Object Model Hijacking

The high-severity heuristic firing for an Equation Editor OLE object indicates a strong likelihood that this file is designed to exploit a vulnerability within the Equation Editor component. This is a common technique used to download and execute secondary malicious payloads. No specific family could be identified from the available evidence.

Heuristics 2

  • Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR
    Embedded OLE object xl/embeddings/HW5hLggo.Ss 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
ceebed019c756dff410206067628afbd7514808c2b3d1290672bf77d391fd64c		 ooxml-ole-object OOXML embedded OLE part: xl/embeddings/HW5hLggo.Ss 849920 bytes
ooxml_oleobject_00_ole10native_00.bin
01ba679a6060be321d6cc13e8679450667ba8a2084152a944eb4c77271b2625a		 ole-package OOXML xl/embeddings/HW5hLggo.Ss Ole10Native stream: OlE10nAtIVE 840837 bytes

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