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

Static analysis result for SHA-256 10aefc8e1c8b7876…

MALICIOUS

Office (OLE) / .DOCX

174.0 KB Created: 2021-01-22 12:16:00 Authoring application: Microsoft Office Word
MD5: 6d50b6696da7e84c7257a5c957436159 SHA-1: 7eb2fec9a29db033615dfa6a62e4c7324e5353e2 SHA-256: 10aefc8e1c8b78761bcd56302c87e58b3801cf8582f56ef281ae3350327e94c7
202 Risk Score

Malware Insights

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

The sample contains a VBA macro that executes upon opening the document, as indicated by the Document_Open heuristic. The macro code is heavily obfuscated, making it difficult to determine its exact payload, but the presence of CreateObject and the ClamAV detection suggest malicious intent. The macro likely attempts to download and execute a secondary payload.

Heuristics 6

  • ClamAV: Doc.Malware.Emodldr-10033989-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emodldr-10033989-0
  • 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
57c5fc8ce17815567da52642c52710073a1f26f502815de80b26d094034f9496		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 16557 bytes

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