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

Static analysis result for SHA-256 65afacffdde9c220…

MALICIOUS

Office (OLE) / .DOC

199.0 KB Created: 2020-10-21 13:40:00 Authoring application: Microsoft Office Word
MD5: e6bf1ead0d2be4b13a919f52c6dd9632 SHA-1: 6e8025a995c478b3e5430898c844334133afb689 SHA-256: 65afacffdde9c2202e28125192dbfc1094522200913e53bd6d003b6a1754f3f7
202 Risk Score

Malware Insights

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

The file is a malicious Office document containing a VBA macro that is automatically executed upon opening, as indicated by the Document_Open heuristic. The macro uses CreateObject and obfuscated p-code, suggesting it's designed to download and execute a second-stage payload. The ClamAV detection name 'Doc.Dropper.EmotetiBlueUpdate1020' further supports this dropper functionality.

Heuristics 6

  • ClamAV: Doc.Dropper.EmotetiBlueUpdate1020-9780531-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.EmotetiBlueUpdate1020-9780531-0
  • 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
95eb3c5d035a5c49033717199bc50764986e3b5ab99bba0bc56e259ec5a3061f		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 23248 bytes

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