Emotet — Office (OLE) / .DOC malware analysis

Static analysis result for SHA-256 77aac1b53f10e8c3…

MALICIOUS

Office (OLE) / .DOC

198.5 KB Created: 2020-10-21 13:40:00 Authoring application: Microsoft Office Word
MD5: 195b57360c118901f128587b224c222d SHA-1: c8cddf02ef31d0c183b8468df181c21a0a7172e3 SHA-256: 77aac1b53f10e8c37401b99cd8c746ceed663e34f07f4195ee437178595c5a89
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The file is a malicious Office document containing VBA macros, specifically a Document_Open macro that uses CreateObject to execute code. The ClamAV detection name 'Doc.Dropper.EmotetiBlueUpdate1020-9780531-0' strongly suggests a dropper functionality, likely Emotet, which is known to download and execute further stages. The obfuscated VBA code and the presence of a Document_Open auto-execution macro are typical of Emotet's initial infection vector.

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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