Malicious Office (OLE) / .XLS — malware analysis report

Static analysis result for SHA-256 8cd7e0f9850770e7…

MALICIOUS

Office (OLE) / .XLS

264.0 KB Created: 2020-09-14 21:28:14 Authoring application: Microsoft Excel
MD5: 0e6fc86d386b5b29486970eb1c501e8c SHA-1: bf57b5f35888956c9753bbb423325e8f4f5ca098 SHA-256: 8cd7e0f9850770e73e7b3e1f44b0276017a57a109f791056dfde75a4ed51ad2f
60 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic

The presence of an encrypted Excel 4.0 macro sheet, identified by the OLE_XLM_ENCRYPTED_MACROSHEET heuristic, strongly suggests this file is designed to execute malicious code. The OLE_XLM_AUTOOPEN heuristic further confirms the presence of an auto-executable macro. Without a document body or script content, the exact payload and delivery mechanism remain unclear, but the file structure points to a classic macro-based attack.

Heuristics 2

  • Encrypted Excel 4.0 macro sheet high OLE_XLM_ENCRYPTED_MACROSHEET
    Workbook contains an Excel 4.0 macro sheet and BIFF FILEPASS encryption. Password-protected XLM macro sheets, especially the default Excel password path, are a common malware evasion pattern because static formula extraction may fail until the workbook is decrypted.
  • Excel 4.0 (XLM) macro sheet present medium OLE_XLM_AUTOOPEN
    Workbook contains an Excel 4.0 macro sheet sub-stream — XLM is rarely seen in modern legitimate workbooks and was a major Office malware vector during 2020-2022.

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