Emotet — Office (OLE) / .DOC malware analysis

Static analysis result for SHA-256 611f92f8dd30635f…

MALICIOUS

Office (OLE) / .DOC

187.0 KB Created: 2020-10-22 00:06:00 Authoring application: Microsoft Office Word
MD5: d8b4e4efb740ac97a6fda17117d6f1fe SHA-1: 8f5b086ef740c535a4513638751223930499ff84 SHA-256: 611f92f8dd30635fe02605e4d220761443828422375fb8e0a386753f8a1fdcdf
202 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

The sample is a malicious Office document containing VBA macros, specifically a Document_Open macro that executes obfuscated code. This behavior is characteristic of Emotet, which often uses macros to download and execute further stages. The ClamAV detection name 'Doc.Dropper.EmotetiBlueUpdate1020-9780531-0' further supports this classification. The VBA code likely attempts to download a second-stage payload, as indicated by the 'Ingress Tool Transfer' technique.

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
b6a1fe9ef18d7d648ff2cf2e166c09966bfce11fc8f8049fcb00789eed1d8da2		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 23253 bytes

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