Emotet — Office (OLE) / .DOC malware analysis

Static analysis result for SHA-256 7d37b6d909b05646…

MALICIOUS

Office (OLE) / .DOC

192.9 KB Created: 2020-02-07 13:53:00 Authoring application: Microsoft Office Word
MD5: ba3b844082f7276150bcc206ce4d5cde SHA-1: 2e961eca70df131f4edad94031adc9c2599c1d7b SHA-256: 7d37b6d909b0564605a92781d24f6a2da662b176d749562497aef5ee173c01f8
262 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample is a malicious OLE document containing VBA macros. The 'Document_open' macro, a known auto-execution technique, utilizes 'CreateObject' and a hidden UserForm property to stage commands. ClamAV detection and heuristic firings strongly indicate the Emotet family, which commonly uses this method to download and execute further stages.

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.Malware.Emotet-7580153-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emotet-7580153-0
  • 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
e1a243b990797d801b67a817af490223aef2d546f7f51ad324701db991900037		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 10814 bytes

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