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

Static analysis result for SHA-256 6098ea8b508e01b7…

MALICIOUS

Office (OLE) / .DOCX

175.9 KB Created: 2020-09-17 20:07:00 Authoring application: Microsoft Office Word
MD5: a5fc1a7a7b3230e8315c0ea43e4d2b9c SHA-1: 4c907d0d8de9ecc7d72bccd842eb70a500b707f7 SHA-256: 6098ea8b508e01b7b777f7e9ae9b62e69f4e95a1bf8342c4d7ad98e5559d70d1
202 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1140 Deobfuscate/Decode Files or Information

The sample contains VBA macros, specifically a Document_Open macro that utilizes CreateObject, indicating an attempt to execute malicious code. The ClamAV detection as 'Doc.Downloader.Generic' further supports this. The script appears to be obfuscated, but its intent is to download and execute a second-stage payload, likely leveraging the embedded macro file.

Heuristics 6

  • ClamAV: Doc.Downloader.Generic-9763054-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9763054-0
  • 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
620e9eb15c32ed012e3e43742d6a5833fa906ea09e2bf7ca9f4f384d7210c8d6		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 21992 bytes

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