Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 ef80e91409367cf6…

MALICIOUS

Office (OLE)

343.5 KB Created: 2020-07-13 11:03:58 Authoring application: Microsoft Excel First seen: 2020-09-07
MD5: e659ffd426471152cad5f3953d6586da SHA-1: 424d758d7a94e9011a49251e5da4a9db71572822 SHA-256: ef80e91409367cf63b914eefda9488ed3913cbc62e3e5a218834a05fcbbc10d8
60 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The file is an encrypted Excel 4.0 macro sheet, indicated by the OLE_XLM_ENCRYPTED_MACROSHEET heuristic. This suggests the file was designed to be delivered as a malicious attachment, likely via spearphishing. The presence of XLM macros points to the T1059.005 (Visual Basic) technique, which is commonly used to download and execute further payloads.

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.