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

Static analysis result for SHA-256 36472ecbfaa26cea…

MALICIOUS

Office (OLE) / .XLS

93.5 KB Created: 2020-03-19 15:06:18 Authoring application: Microsoft Excel
MD5: 18f0b6e0f9ce2bf71e070a0f2a737e0d SHA-1: e96e23739018102ca206555ce7caee94df369379 SHA-256: 36472ecbfaa26ceaa21c6664ecb647d653adfd5f5c5b1ecc595af43b45c95c88
60 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic

The sample is an encrypted Excel 4.0 macro sheet, indicated by the OLE_XLM_ENCRYPTED_MACROSHEET heuristic. The OLE_XLM_AUTOOPEN heuristic further confirms the presence of an auto-executable macro. While no specific document body content or scripts were extracted, the nature of the heuristics suggests the file's primary purpose is to execute malicious code upon opening, likely as a downloader or initial access vector.

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.