Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 03a8dce06cdc6e65…

MALICIOUS

Office (OLE)

186.0 KB Created: 2021-05-28 19:59:54 Authoring application: Microsoft Excel First seen: 2021-06-13
MD5: c9897c7d06e364e9359f15269b264066 SHA-1: 2ee594baa3ecab574db3d3b038b5052c724fdbea SHA-256: 03a8dce06cdc6e655a03430ae2fc84e29b453a5f571c52af766cb66a069724ce
60 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic

The sample is an Excel 4.0 macro sheet that is encrypted, which is a strong indicator of malicious intent. The presence of an 'AUTOOPEN' macro further suggests that the file is designed to execute automatically when opened. No specific family could be identified due to the encryption and lack of further script details.

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.