Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 0745a0b546e98bc2…

MALICIOUS

Office (OLE) / .DOCX

171.3 KB Created: 2020-09-16 14:22:00 Authoring application: Microsoft Office Word
MD5: f9bfe8716ff04991c03f675ea3ac62d8 SHA-1: ed152ad1de6843e69dab60ec422c7d4684ea45a5 SHA-256: 0745a0b546e98bc288370d0b4faace44a060f1abb905403e159b812b2d694a7f
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample contains VBA macros, specifically a Document_Open macro, which is a common technique for Emotet. The macro utilizes CreateObject, indicating an attempt to execute arbitrary code. The ClamAV detection name further supports the Emotet family attribution. The primary function of the macro appears to be downloading and executing a second-stage payload.

Heuristics 6

  • ClamAV: Doc.Malware.Emotet-9762291-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emotet-9762291-0
  • 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
9f558458f94a18a1753cb250fa701b5a4b696c6db0138705a67ec847e6bae57b		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 21795 bytes

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