Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 5b5139dd7a1ffc7d…

MALICIOUS

Office (OLE) / .DOCX

192.5 KB Created: 2020-10-27 23:09:00 Authoring application: Microsoft Office Word
MD5: 8bceacdcf5ca671bd64b1de28a8d3468 SHA-1: 56d7003310e824e41b8c693f8817373fd3788b9a SHA-256: 5b5139dd7a1ffc7d31ef829c6f23afb23a459dc8aa0a8f900970875ecd254e39
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample is a Microsoft Word document with a high-confidence detection for VBA macros, specifically triggering a Document_Open macro and CreateObject calls. The ClamAV detection explicitly names it as 'Doc.Malware.Emotet'. The VBA script contains obfuscated code that appears to construct and execute a PowerShell command, indicated by the string concatenation of '[ uNHs ]:[ uN

Heuristics 6

  • ClamAV: Doc.Malware.Emotet-9784450-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emotet-9784450-1
  • 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
32c875cc5445b529213c7b353e717e973bc3b3565cfb6b70a94210d83d471e9e		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 16135 bytes

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