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

Static analysis result for SHA-256 9e0f429c276cd91b…

MALICIOUS

Office (OOXML) / .XLSX

682.3 KB Created: 2023-08-03 11:34:29 UTC Authoring application: Microsoft Excel 16.0300
MD5: 92ab496080feb0cfac0335b977ca4e27 SHA-1: b514933187bd7cc49fd349d716c8db8c067125b4 SHA-256: 9e0f429c276cd91bbd9f7b08a04774633fef248f4b804aee23611994d3f0b32e
60 Risk Score

Malware Insights

MITRE ATT&CK
T1559.001 Component Object Model Hijacking

The analysis identified an embedded OLE object, specifically an Equation Editor object, which is a common technique for delivering exploits. This object is likely intended to leverage a vulnerability in the Equation Editor to gain execution of a malicious payload. The presence of this object strongly suggests an attempt to exploit the user or the application.

Heuristics 2

  • Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR
    Embedded OLE object xl/embeddings/d9Dt.wr 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
aa965501a9cf83f3292a756a2d80d98e725d04dd5e681881d91864c5baf2df34		 ooxml-ole-object OOXML embedded OLE part: xl/embeddings/d9Dt.wr 960512 bytes
ooxml_oleobject_00_ole10native_00.bin
3be7152f2a9219deddd5f5714705c386820c73cf955edb619621e21848dfe1aa		 ole-package OOXML xl/embeddings/d9Dt.wr Ole10Native stream: OLe10NativE 950667 bytes

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