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

Static analysis result for SHA-256 b76c10b6f89466b7…

MALICIOUS

Office (OOXML) / .XLSX

734.7 KB Created: 2024-03-25 10:30:17 UTC Authoring application: Microsoft Excel 12.0000
MD5: 116367a4fb9bd441aeb6149bc5539799 SHA-1: efcd304257d72b04be273fb8bffffdefc93ed3f0 SHA-256: b76c10b6f89466b70b87ce590783f74df5ae1cb1dc13d12938725f9dd861fcd8
60 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious Link: Malicious File

The file is an Excel document containing an embedded OLE object, specifically identified as an Equation Editor object. This is a high-severity finding and a common method for delivering exploits, such as CVE-2017-11882, to compromise the user's system. No document body or scripts were extracted, but the presence of the Equation Editor OLE object strongly suggests an exploit delivery attempt.

Heuristics 2

  • Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR
    Embedded OLE object xl/embeddings/s4UDCE.PGJ 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
6f378f9e0669e300ff8eca50f622fb26e8e608831bb79bada9ddf61601595462		 ooxml-ole-object OOXML embedded OLE part: xl/embeddings/s4UDCE.PGJ 1058304 bytes
ooxml_oleobject_00_ole10native_00.bin
447b76734a6f21ae4dd0d6c9e558d936bd2c46b38034a8846fd2814c83208dc9		 ole-package OOXML xl/embeddings/s4UDCE.PGJ Ole10Native stream: oLe10NATiVe 1047363 bytes

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