Emotet — Office (OLE) / .DOC malware analysis

Static analysis result for SHA-256 0d4957ad656edeae…

MALICIOUS

Office (OLE) / .DOC

199.0 KB Created: 2020-10-21 13:40:00 Authoring application: Microsoft Office Word
MD5: 19592a9302f59f7d4801b6fae74b6db9 SHA-1: 38d44ec5fa481ba39086f6eff89d316adf019c43 SHA-256: 0d4957ad656edeaef3f49b20de1845bcafd5e78981c607cff352212e84ae913e
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The file is a malicious Office document containing obfuscated VBA macros, as indicated by multiple high-severity heuristics and ClamAV detection. The 'Document_Open' macro and 'CreateObject' calls suggest an attempt to execute code upon opening. The ClamAV signature 'Doc.Dropper.EmotetiBlueUpdate1020-9780531-0' strongly suggests this is an Emotet variant used for dropping further malware. The obfuscated nature of the VBA code and the presence of a 'Document_Open' auto-execution macro point to a malicious 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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