Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 1fa7f120fb85a57f…

MALICIOUS

Office (OLE)

55.5 KB Created: 2020-05-14 04:37:16 Authoring application: Microsoft Excel First seen: 2020-09-15
MD5: 49739bb4ae324268731684c90007ae80 SHA-1: 08a56cf983b1db23a362d4ebfa02c3782c646b7f SHA-256: 1fa7f120fb85a57f5a7aba8d896c686c988233a29e3a0f6a9225917a9d6b79dc
60 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic

The file is an encrypted Excel 4.0 macro sheet, indicated by the OLE_XLM_ENCRYPTED_MACROSHEET and OLE_XLM_AUTOOPEN heuristics. This suggests the file is designed to automatically execute malicious macros upon opening. The document body was truncated and unreadable, preventing further analysis of its specific lure or payload.

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.