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

Static analysis result for SHA-256 106d381e6f7de228…

MALICIOUS

Office (OLE) / .DOCX

170.5 KB Created: 2021-01-22 16:11:00 Authoring application: Microsoft Office Word
MD5: 8853a21f9327f30689a3c793ef253a8c SHA-1: 73acaf6cbeb0e9cf1aabf3a8d1223819b4b20d9e SHA-256: 106d381e6f7de228eeca31e1ff0745404f3277db77946b9c462163b70bd5dd1e
202 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The sample contains VBA macros, specifically a Document_Open macro, which is a common technique for executing malicious code upon opening the document. The heuristic firings indicate the use of CreateObject and p-code auto-execution, suggesting the macro is designed to download and run a secondary payload. The obfuscated nature of the VBA code prevents a more detailed analysis of its specific actions.

Heuristics 6

  • ClamAV: Doc.Malware.Emodldr-10033990-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emodldr-10033990-0
  • 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
5ed4257a756cf59fd0bdd4996a568d11e210a8cb1fd2c78a16a7c0bd2a73f2f9		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 16688 bytes

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