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

Static analysis result for SHA-256 f81456a50fdd4b1b…

MALICIOUS

Office (OLE) / .XLS

56.5 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: d1cfa95154d39013a1cc819ab8e2093c SHA-1: 5542f71c21cebaa4d74ace566a4f1fbd0d20c203 SHA-256: f81456a50fdd4b1be484ab2c20bd9fb68c5ab303a889ca321756ec718cbad6f3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic for Applications T1204.002 Malicious File T1059.001 PowerShell

The file is an Excel 4.0 macro-enabled spreadsheet. It contains an Auto_Open macro that utilizes the RUN function, indicating an attempt to execute external code. The macro is configured to download a payload from the URL 'designergon.com/adam/eveliasm.php'. The presence of an 'enable macros' lure further supports the malicious intent. The macro also attempts to write to a file path '.. onlinear.fsrtefd'.

Heuristics 4

  • Excel 4.0 Auto_Open defined name critical OLE_XLM_AUTOOPEN_DEFINEDNAME
    oletools recovered an Auto_Open / Auto_Close entry from an Excel 4.0 macro sheet. The raw BIFF name can be tokenized or partially opaque to byte-string checks, but the recovered macro listing confirms the workbook has an XLM auto-execution entry.
  • XLM Auto_Open with dangerous formula APIs critical OLE_XLM_DANGEROUS_FN
    Excel 4.0 macro sheet contains an Auto_Open / Auto_Close entry and dangerous XLM formula APIs that can invoke programs, write files, or transfer control without VBA.
  • 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.
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
xlm_macros.txt
7cfd43e0ec96d055c13380d83d02fda9b8d165845e8b927f869ac6eb14841094		 xlm-macro oletools.olevba.extract_all_macros (XLM macro listing) 4630 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.