Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 7789a5ea12217e48…

MALICIOUS

Office (OLE) / .DOCX

195.2 KB Created: 2020-09-16 06:48:00 Authoring application: Microsoft Office Word
MD5: b21181a1398f099af7ce942977a655e3 SHA-1: 513832387d1479a5d8caa2914d5ec03251aa867c SHA-256: 7789a5ea12217e4890eed699d3532cd98e0d71b7178bb51f11e76dc34a3da27f
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample contains VBA macros, including a Document_Open auto-execution macro, which is a common technique for Emotet. The macro uses CreateObject, indicating an attempt to execute code. The ClamAV detection explicitly names Emotet. The VBA code appears to be obfuscated, but the presence of the Document_Open macro and the CreateObject call strongly suggest the execution of a malicious payload.

Heuristics 6

  • ClamAV: Doc.Malware.Emotet-9762408-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emotet-9762408-0
  • 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
df4fb732414a2f9f369567b5a31d1b266832fcbd15a8b5f56fa79c20074a71e7		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 25460 bytes

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