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

Static analysis result for SHA-256 a2dfb729e78735c2…

MALICIOUS

Office (OLE) / .XLS

134.0 KB Created: 2015-06-05 18:17:20 Authoring application: Microsoft Excel
MD5: bdc8c033b244b1b66c9103d0e0dd1f78 SHA-1: 82d88e42c59bc2e8c790327d94b2dff33553a616 SHA-256: a2dfb729e78735c2de10503e1ead8039ec0e0538482fde7eb3fb81e6ef5fefd2
162 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1204.002 Malicious File

The critical ClamAV detection and high-severity heuristics for OLE_VBA_MACROS and OLE_VBA_AUTO indicate the presence of malicious VBA code designed to execute automatically upon opening the Excel file. The VBA script likely attempts to download and execute a second-stage payload from one of the embedded URLs. The Auto_Open and Auto_Close macros suggest an attempt to control execution flow and potentially establish persistence or perform cleanup actions.

Heuristics 5

  • ClamAV: Doc.Downloader.Docusign112100-9908075-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Docusign112100-9908075-0
  • Auto_Open macro high OLE_VBA_AUTO
    Auto_Open macro
  • Auto_Close macro high OLE_VBA_AUTOCLOSE
    Auto_Close macro
  • VBA macros detected medium OLE_VBA_MACROS
    Document contains VBA macro code
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://190.14.37.238/
    • http://5.196.247.5/�
    • http://94.140.115.118/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
82f9ea84a47774711cea5a3dfab141bccbdd4d96155b8209783ccc6bb1cf8498		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 4951 bytes

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