Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 888b1d062f520f2f…

MALICIOUS

Office (OLE)

58.5 KB Created: 2020-05-18 00:14:53 Authoring application: Microsoft Excel First seen: 2020-09-15
MD5: 3a6b1b39ddaa905d5192effdddbe5b76 SHA-1: 4cec4d3ab29bc5a1a53b3bd547e5adc6d0f41c4f SHA-256: 888b1d062f520f2fd28a4307ec9c40d518c65d02bae9dbf5c455ae94cf61077f
60 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic

The sample is an Excel file containing an encrypted Excel 4.0 macro sheet, indicated by the OLE_XLM_ENCRYPTED_MACROSHEET heuristic. This suggests the file is designed to execute malicious macros when opened. The presence of an AUTOOPEN macro further supports this, indicating an attempt to automatically run code. No specific family could be identified.

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.