Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 5df4b703c5848bd3…

MALICIOUS

Office (OLE) / .DOCX

158.1 KB Created: 2021-01-12 14:56:00 Authoring application: Microsoft Office Word
MD5: aed8593d224d3041b5bd0e465ae2b1f5 SHA-1: 8f1728588225aa4af50e8a8a9580d5ee5fba96f5 SHA-256: 5df4b703c5848bd3bf897faba1f1142e11c95e17e720a911ade33cdb275f3e0b
202 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1204.002 Malicious File

The sample is a Microsoft Word document containing a VBA macro that is automatically executed upon opening, as indicated by the 'Document_Open' heuristic. The ClamAV detection name 'Doc.Downloader.EmotetRed02224-9938637-0' strongly suggests Emotet family involvement and a downloader function. The macro's obfuscated code likely aims to download and execute a further stage. The presence of VBA macros and the auto-execution heuristic point to T1059.005 (Visual Basic). The overall behavior aligns with a malicious attachment used in spearphishing campaigns (T1566.001) leading to the execution of a malicious file (T1204.002).

Heuristics 6

  • ClamAV: Doc.Downloader.EmotetRed02224-9938637-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.EmotetRed02224-9938637-0
  • 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
cd2cdccd599e42cfa9fbd13cb834d7d13272d1d23a56e4724093d32e3972c403		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 7306 bytes

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