Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 161f1c79e3c1a32e…

MALICIOUS

Office (OLE) / .DOCX

178.5 KB Created: 2020-10-26 17:32:00 Authoring application: Microsoft Office Word
MD5: 7faa0c124d126f17550dea0c147019fe SHA-1: 2706464d1f6412a2b9507689b42205a5832ce2db SHA-256: 161f1c79e3c1a32ec90c679b1fa99d722341c618031ea9a15a0e3f1eac9953db
202 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1059 Command and Scripting Interpreter T1203 Exploitation for Client Execution

The file contains VBA macros, including a Document_Open auto-execution macro, which is a common technique for Emotet. The macro utilizes CreateObject to likely download and execute a second-stage payload. ClamAV detection confirms the presence of Emotet, specifically a downloader variant.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-9784039-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9784039-0
  • 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
fd86ec2eb619814e7cd62b76d9f6553c2ce07800d98173938893210dd89c469b		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 15663 bytes

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