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

Static analysis result for SHA-256 2602cda7c852e8f4…

MALICIOUS

Office (OOXML) / .XLSX

614.9 KB Created: 2023-08-03 11:34:29 UTC Authoring application: Microsoft Excel 16.0300 First seen: 2023-08-24
MD5: 5039c4c74080664bf38893ec51b6b42e SHA-1: 866be77754a700aea8d19936d4af56844d43ee2f SHA-256: 2602cda7c852e8f426a780cc48605444d0bc2612810756644103a686e21983ff
60 Risk Score

Malware Insights

MITRE ATT&CK
T1559.001 Component Object Model Hijacking T1204.002 Malicious File

The primary heuristic firing indicates the presence of an embedded OLE object, specifically identified as an Equation Editor object. This is a common technique used to exploit vulnerabilities in Microsoft Office applications, often leading to the execution of arbitrary code. The embedded object's filename is noted as 'xl/embeddings/mXwt.gm'.

Heuristics 2

  • Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR
    Embedded OLE object xl/embeddings/mXwt.gm 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
19c09e5e63fa0b118b6c54f56a998941f8505ba9a16a3e5c4a5b2a585d03a76f		 ooxml-ole-object OOXML embedded OLE part: xl/embeddings/mXwt.gm 932352 bytes
ooxml_oleobject_00_ole10native_00.bin
c8e6766785013eb541ba566497ddc503ad8a9fa0852d4a8c38532b391d5738da		 ole-package OOXML xl/embeddings/mXwt.gm Ole10Native stream: olE10nATIvE 922131 bytes

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