Emotet — Office (OLE) malware analysis

Static analysis result for SHA-256 183e62420bafede5…

MALICIOUS

Office (OLE)

142.6 KB Created: 2020-10-15 06:09:00 Authoring application: Microsoft Office Word
MD5: 914852807cda58671790d9f81fdc9d35 SHA-1: 9012cda24f70429286847e5cd8f2c7bdcbe452fb SHA-256: 183e62420bafede5946554ee900f6da6f3195d33c8c1ddfe9388ff03522c3220
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample contains a Document_Open VBA macro that executes obfuscated code. Heuristics indicate the use of CreateObject and p-code execution, strongly suggesting the macro's purpose is to download and execute a secondary payload. ClamAV detection explicitly identifies this as an Emotet downloader variant. The VBA code itself is heavily obfuscated, making precise analysis of its actions difficult, but the overall pattern is consistent with Emotet's typical behavior of dropping further malware.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-9778170-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9778170-0
  • 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
c973a96acafb9aae0a5d75a01318346c913bca2d5caab3be2a38d764d4134fb6		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 11038 bytes

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