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

Static analysis result for SHA-256 2afb02bdc8da9583…

MALICIOUS

Office (OOXML) / .XLSX

697.1 KB Created: 2023-08-03 11:34:29 UTC Authoring application: Microsoft Excel 16.0300
MD5: b118782471953ade5d40e387c1fd7ab3 SHA-1: 7efbbd3c7364c0694cb15f6e151c4914e547a1fd SHA-256: 2afb02bdc8da9583e6acc1a31a5dfa4f8008ae365aa0fb3c8ed371a2275ff572
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 strongly indicates the presence of a malicious component designed to exploit vulnerabilities. This is a common technique for initial access, often leading to the execution of further malicious code. No document body or scripts were extracted, limiting further analysis of the specific payload.

Heuristics 2

  • Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR
    Embedded OLE object xl/embeddings/3uC.JekIbVJ 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
713466326a27cdd0a363e64ad95c5aad1038d97592f5329bdb71e70517fbaffb		 ooxml-ole-object OOXML embedded OLE part: xl/embeddings/3uC.JekIbVJ 1020416 bytes
ooxml_oleobject_00_ole10native_00.bin
d21ecd5da2aca517533cb4738bf4a4acfa584bfb42b1db45bb0df1f695023ddf		 ole-package OOXML xl/embeddings/3uC.JekIbVJ Ole10Native stream: oLe10NATIVE 1010086 bytes

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