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

Static analysis result for SHA-256 7a341886c6175b8a…

MALICIOUS

Office (OLE) / .DOC

177.9 KB Created: 2020-09-18 22:05:00 Authoring application: Microsoft Office Word
MD5: fc5c8efc3460d31ce2aeee316793d5d1 SHA-1: ed49e79531423af37c3a5ff7f5a2da33f9e8c98e SHA-256: 7a341886c6175b8a15c8b5455b97963791dd1bb35a05671c81a08884aea4d568
202 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

The file is a Microsoft Word document containing VBA macros, specifically a Document_Open macro that uses CreateObject. This indicates an attempt to execute malicious code upon opening the document. The ClamAV detection as 'Doc.Downloader.Generic' strongly suggests the macro's purpose is to download a second-stage payload. No specific family could be identified, but the behavior is consistent with a downloader.

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