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

Static analysis result for SHA-256 901da29409d30525…

MALICIOUS

Office (OOXML) / .XLSX

638.2 KB Created: 2023-12-04 17:54:29 UTC Authoring application: Microsoft Excel 16.0300 First seen: 2024-06-13
MD5: 2b88f0d3b1cbee9688a59cb50d0ebf92 SHA-1: dc8e8d0116cc1a679d49442397d363548632087c SHA-256: 901da29409d305252a42e1829983cc1630f4bb7b92867713df280a36cb8bd789
60 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1559.001 Component Object Model Hijacking

The high-severity heuristic firing for 'OLE_EQUATION_EDITOR' indicates the presence of a vulnerable Equation Editor OLE object within the Excel file. This is a common technique used to exploit CVE-2017-11882, 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/TkEWI.DRAv 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
0030d0786a18ca1144b85ed444bb8620441fc6dd918d81fc8a7a3d1fd4130fdd		 ooxml-ole-object OOXML embedded OLE part: xl/embeddings/TkEWI.DRAv 957440 bytes
ooxml_oleobject_00_ole10native_00.bin
dc7cbfec56682897b0b914287974053fbbcc528cb67f76900245023ac5ddce36		 ole-package OOXML xl/embeddings/TkEWI.DRAv Ole10Native stream: oLe10NATIve 947322 bytes

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