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

Static analysis result for SHA-256 80898bee94aec5c6…

MALICIOUS

Office (OOXML) / .XLSM

706.9 KB Created: 2023-09-10 22:05:52 UTC Authoring application: Microsoft Excel 15.0300 First seen: 2023-09-12
MD5: be0537df6b6312ae9edd6578c3c2f65d SHA-1: bf4a0794d49cf2a4a8de52c584551830a1131e22 SHA-256: 80898bee94aec5c6e435498dada5752d1cff5ff94a61246578ceaecb07b5b49e
60 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious Link: Malicious File T1566 Phishing T1566.001 Phishing: Spearphishing Attachment

The file is an XLSM document containing an embedded OLE object, specifically identified as a Equation Editor exploit. This indicates the document is designed to leverage a known vulnerability in the Equation Editor component to achieve code execution. The embedded object is the primary vector for exploitation, likely leading to the download and execution of a further stage malicious payload.

Heuristics 2

  • Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR
    Embedded OLE object xl/embeddings/GLm.zP07g 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
3ed85ea3c58ec5ae4e9c652426b7a66e9b90c56962e40a8aea395c5da69f632a		 ooxml-ole-object OOXML embedded OLE part: xl/embeddings/GLm.zP07g 986112 bytes
ooxml_oleobject_00_ole10native_00.bin
bf73f1eefd5d7a15242bf38b99c1542490c7424975e88fbfa10cd9d68b0c3efa		 ole-package OOXML xl/embeddings/GLm.zP07g Ole10Native stream: OLe10nAtIVE 975648 bytes

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