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

Static analysis result for SHA-256 47f9dcebf7f47b85…

MALICIOUS

Office (OLE) / .XLS

134.0 KB Created: 2015-06-05 18:17:20 Authoring application: Microsoft Excel
MD5: 840c5f1989180fd8a2f621bf3142b59a SHA-1: 230a78dac0611e07719274ab8736bd39d3492d09 SHA-256: 47f9dcebf7f47b85f5d573d0700800de08a6ac3e476194664b6eb1cf16d1cfea
162 Risk Score

Malware Insights

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

The sample is an Excel file containing VBA macros, specifically an Auto_Open macro, which is a common technique for initial execution. The ClamAV detection 'Doc.Downloader.Docusign112100-9908075-0' strongly suggests a downloader functionality. Although the VBA script itself primarily manipulates sheet visibility and shapes, the presence of embedded URLs indicates that the macro likely attempts to download and execute a secondary payload from one of the listed IP addresses. The script was truncated, preventing a full analysis of its execution flow.

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