Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 7633010643d898fa…

MALICIOUS

Office (OLE)

59.0 KB Created: 2020-04-27 23:19:44 Authoring application: Microsoft Excel First seen: 2020-07-24
MD5: 04d7766cff3ba36fbd26316eb9d98f97 SHA-1: f5532cd0382e0fddb8f2b33f7edf7dfebed59b98 SHA-256: 7633010643d898fa95b42263a672ba2432b025508d5b42657571831de0f3a897
60 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic

The sample is identified as an Excel 4.0 macro sheet that is encrypted. This strongly suggests an attempt to hide malicious functionality, likely involving the execution of commands or scripts when the sheet is opened. The presence of the 'AUTOOPEN' heuristic further supports this, indicating an automatic execution trigger. 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.