Malicious Office (OLE) / .EXE — malware analysis report

Static analysis result for SHA-256 102862cd8bf79bf3…

MALICIOUS

Office (OLE) / .EXE

34.5 KB Created: 1999-09-08 05:49:21 Authoring application: Microsoft Excel
MD5: 92e37cb2d8f6bd36af32cdd4f3bce270 SHA-1: f9c45a29e86a132eb438ce00c29df9faca0f1603 SHA-256: 102862cd8bf79bf3d1f2e1225195df75e211cf7af11cc1708323151fb0d65d51
120 Risk Score

Malware Insights

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

The file is an Excel OLE file containing a VBA macro, specifically an Auto_Open macro, which is a strong indicator of malicious intent. The heuristic firings, including 'OLE_XLS5_LAROUX_MACRO_VIRUS', suggest it belongs to a known macro virus family. The embedded VBA code, while truncated, contains text related to the Kevin Mitnick legal case, likely as a lure, and sets up an 'OnSheetActivate' event to execute further malicious actions, probably downloading a second-stage payload.

Heuristics 3

  • Excel 5 Laroux/Larou-CV macro-virus marker cluster critical OLE_XLS5_LAROUX_MACRO_VIRUS
    Legacy Excel workbook contains a Laroux/Larou-CV macro-virus marker cluster including auto_open execution and workbook/module replication strings. This is a narrow indicator for an infected legacy Excel macro workbook.
  • Auto_Open macro high OLE_VBA_AUTO
    Auto_Open macro
  • VBA macros detected medium OLE_VBA_MACROS
    Document contains VBA macro code

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
9e0399171ceb1387705e52fefe5f0616fcd4a5eeac68d3a6a4664e1804a38b4c		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 7847 bytes

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