Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 09a4d7f3bbc95dc5…

MALICIOUS

Office (OLE) / .DOCX

191.0 KB Created: 2020-10-27 23:09:00 Authoring application: Microsoft Office Word
MD5: 8415b3dc60d5b3ab2553305b3d493b9d SHA-1: 7e90e398773af725d7ddb663b0ddc6e9441be9c9 SHA-256: 09a4d7f3bbc95dc5b795441093b4f44943d384f0b9087a71ddaf1b55eda16ec6
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The file contains VBA macros, including a Document_Open auto-execution macro, which is a common technique for Emotet. The macro uses CreateObject to execute obfuscated PowerShell commands. The ClamAV detection name also strongly suggests Emotet. The obfuscated PowerShell is likely responsible for downloading and executing a second-stage payload.

Heuristics 6

  • ClamAV: Doc.Malware.Emotet-9784450-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emotet-9784450-1
  • 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
32c875cc5445b529213c7b353e717e973bc3b3565cfb6b70a94210d83d471e9e		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 16135 bytes

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