Office (OOXML) / .XLSX malware analysis — malicious · bc7af534a47d4433

MALICIOUS

Office (OOXML) / .XLSX

187.0 KB Created: 2026-05-27 17:22:24 UTC Authoring application: Microsoft Excel 12.0000 First seen: 2026-06-10

MD5: ba74676c9c0634efc1c1cdd425d0d84d SHA-1: 34e5a0f1adb93a82bd710eec47bdea7a76781a22 SHA-256: bc7af534a47d4433ce698b0b3dff9061d80308effd7882751d1ffab73e173452

80 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution

The file is an Excel spreadsheet containing an embedded OLE object, specifically identified as an Equation Editor object. This is a common technique for exploiting vulnerabilities to execute arbitrary code. The presence of shellcode candidate regions in the extracted OLE object further supports this. No specific family could be identified, but the attack pattern is consistent with exploitation for client execution.

Heuristics 3

Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR

Embedded OLE object xl/embeddings/oleObject1.bin 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
Suspicious extracted artifact medium EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`ooxml_oleobject_00.bin`	ooxml-ole-object	OOXML embedded OLE part: xl/embeddings/oleObject1.bin	4096 bytes
SHA-256: `ff43181ce719ae9c5db39ccb7fe410c86767cd54bf0ec2871e8d3f762290a7c3`
Detection ClamAV: No threats found Obfuscation or payload: likely Static shellcode analysis found candidate code region(s). Indicators: SC_GETPC_CALL

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