Emotet — Office (OLE) / .DOC malware analysis

Static analysis result for SHA-256 169f03cee2b674a0…

MALICIOUS

Office (OLE) / .DOC

191.0 KB Created: 2020-07-17 19:01:00 Authoring application: Microsoft Office Word
MD5: 73c27a0a2448832998122562d4277dda SHA-1: faf702b17e89ff9598e752ec7f9e115665dedd51 SHA-256: 169f03cee2b674a04eb777235895e2e6d94f82785fac8764ebb330df2bf2448d
262 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, including a Document_Open macro and a hidden UserForm command stager, which are indicative of Emotet. The ClamAV detection also explicitly names Emotet. The VBA code uses CreateObject and string concatenation to construct commands, likely for downloading and executing a secondary payload.

Heuristics 7

  • VBA UserForm hidden-property command stager critical OLE_VBA_USERFORM_HIDDEN_COMMAND_STAGER
    VBA auto-exec macro creates a COM object from a decoded variable and reconstructs command text through Split/Join and hidden UserForm properties such as ControlTipText, Tag, Pages, or HelpContextId. This is a high-confidence macro downloader/loader shape seen in the reviewed OLE set, but it is not an Office CVE exploit primitive.
  • ClamAV: Doc.Downloader.Emotet-10022426-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-10022426-0
  • 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
e17111cc1c9559e31ece9425341ddaba20e2b9712d6fd63cce996976abdbccc4
vba-macro oletools.olevba.extract_macros (decoded VBA source) 69045 bytes