Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 df28f2ba0fd1e2a5…

MALICIOUS

Office (OLE)

515.0 KB Created: 2020-07-14 08:40:55 Authoring application: Microsoft Excel First seen: 2020-09-07
MD5: 14e5fd44d43f96426d7499e41626560e SHA-1: 53c22aeecd280d71ff69d91ddaf967c36e449db9 SHA-256: df28f2ba0fd1e2a5acee743c36a04155abfb0229c743b180cb39403ded922772
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, as indicated by the OLE_XLM_ENCRYPTED_MACROSHEET heuristic. This suggests the file is designed to execute malicious code upon opening, likely to download and run a secondary payload. The specific nature of the payload cannot be determined from the available evidence.

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.