Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 65fe5c36c465cfa1…

MALICIOUS

Office (OLE) / .DOCX

162.3 KB Created: 2020-10-16 18:44:00 Authoring application: Microsoft Office Word
MD5: a1a6198be07727a6c2c050c08146725b SHA-1: 280fd5bb3e9686b4fc186d329699fc933113d829 SHA-256: 65fe5c36c465cfa1cc58f54aca29a2da9e56f3fa0b499ff8ae0b654338db114b
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample contains VBA macros, specifically a Document_Open macro that utilizes CreateObject. This is a common pattern for Emotet to download and execute a secondary payload. The ClamAV detection also explicitly names Emotet. The obfuscated VBA code and the presence of a macro file are strong indicators of this attack vector.

Heuristics 6

  • ClamAV: Doc.Malware.Emotet-9778591-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emotet-9778591-0
  • 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
fcaa38ed96b1b218739bafc5403c2803ab83f37a0565afb297027068f0a0ee86		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 15517 bytes

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