Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 9ca4b686eeda9081…

MALICIOUS

Office (OLE)

88.5 KB Created: 2021-05-28 19:06:54 Authoring application: Microsoft Excel First seen: 2021-06-04
MD5: 1d247319dd7558e1300d5b186812aefb SHA-1: 958427ea25cf6de1d01373d4093b7ef394e86a17 SHA-256: 9ca4b686eeda90814a96a9a86209aec1671d4a05757c5cc903bb115a209d7a36
60 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic

The sample is an Excel 4.0 macro sheet that is encrypted, indicating it is likely malicious. The presence of an 'AUTOOPEN' macro further suggests that malicious code is intended to execute automatically when the document is 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.