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

Static analysis result for SHA-256 a12306806d3b3e27…

MALICIOUS

Office (OOXML) / .XLSX

665.0 KB Created: 2023-08-03 11:34:29 UTC Authoring application: Microsoft Excel 16.0300
MD5: 4a6cd3e767348fb7a2473e435144b4e9 SHA-1: 78c275c9679031d4647708aa1b7241d38bdc51c3 SHA-256: a12306806d3b3e277faf95204f9801785ff2b82e07d42136bd145a4b1fe230b9
60 Risk Score

Malware Insights

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

The file contains an embedded OLE object, specifically identified as an Equation Editor object. This strongly suggests exploitation of a known vulnerability within the Equation Editor component to execute arbitrary code. The embedded object's path is noted as a potential indicator of compromise.

Heuristics 2

  • Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR
    Embedded OLE object xl/embeddings/JpE8HhXj.AIFYbFr 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
8e38f2a272073bd709935778e1e6bc7a78e484fd71452e747efcf24b2564c70c		 ooxml-ole-object OOXML embedded OLE part: xl/embeddings/JpE8HhXj.AIFYbFr 1001472 bytes
ooxml_oleobject_00_ole10native_00.bin
2495709359d20d2213be7106921362800190f2bbac31df84c356e2513739d0e9		 ole-package OOXML xl/embeddings/JpE8HhXj.AIFYbFr Ole10Native stream: ole10NatIve 990925 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.