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

Static analysis result for SHA-256 82f7c40e535ff538…

MALICIOUS

Office (OLE) / .DOC

177.5 KB Created: 2020-09-18 22:05:00 Authoring application: Microsoft Office Word
MD5: ae34e8579d3d54917b9df249f736424c SHA-1: 58d87a7f06da2c8ecd08053ddcab06af980f2c22 SHA-256: 82f7c40e535ff53879d1e06c6938214158328f0ba11dc152d5a203b05f7e79d8
202 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1204.002 Malicious File

The sample is a Microsoft Word document containing a Document_Open VBA macro. This macro utilizes CreateObject to likely download and execute a second-stage payload, as indicated by the 'Doc.Downloader.Generic' ClamAV detection. The obfuscated nature of the VBA script prevents a more detailed analysis of its specific actions or the reconstruction of any URLs it might use.

Heuristics 6

  • ClamAV: Doc.Downloader.Generic-9763712-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9763712-0
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • VBA p-code auto-exec with execution tokens high OLE_VBA_PCODE_AUTOEXEC_EXEC
    Compiled VBA/cache stream contains an auto-execution token together with shell/download/object-execution tokens. This catches p-code-only or source-extraction-failure macro documents where visible source is unavailable.
  • 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://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
f035cd1023dade0b5d5e126cbab797fd9aeb292e781548b39fa794a9356990ee		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 19197 bytes

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