Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 5f9950d2d8a5a93d…

MALICIOUS

Office (OLE) / .DOCX

145.4 KB Created: 2020-09-30 13:54:00 Authoring application: Microsoft Office Word
MD5: 3423ffb70039190122d15f42c32e7b97 SHA-1: 98edef6bb4e11a1740abb2a7443c46a58f43d172 SHA-256: 5f9950d2d8a5a93da4a5abf76b023aa395391216465cc9f6a8bc953466d81d25
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample is a Microsoft Office document containing VBA macros, specifically triggering on the Document_Open event. Heuristics indicate the use of CreateObject, a common technique for executing malicious code. The ClamAV detection explicitly names Emotet, a well-known banking trojan and downloader. The VBA macro code is obfuscated but the presence of Document_open and CreateObject suggests it's designed to download and execute a second-stage payload.

Heuristics 6

  • ClamAV: Doc.Malware.Emotet-9769801-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emotet-9769801-1
  • 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
b0a96d5f70fa37f74dd6926b04c01f24a02f2a82bef41b3183b9207cf3a20fca		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 10253 bytes

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