Emotet — Office (OLE) / .DOC malware analysis

Static analysis result for SHA-256 6ad9f08b450d8d54…

MALICIOUS

Office (OLE) / .DOC

172.8 KB Created: 2020-09-23 04:35:00 Authoring application: Microsoft Office Word
MD5: b905304a49d4864d08b84c482b86fa0d SHA-1: 4c7f2f15fa6b8ea56448f048b0dcc4e1a5494f50 SHA-256: 6ad9f08b450d8d54e8882aa9b41182c34855e63c027d973faa735cfe9f68291a
242 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample is a malicious Office document containing VBA macros, specifically a Document_Open macro designed to execute automatically. Heuristics indicate the use of CreateObject and GetObject, common for downloading and executing payloads. ClamAV detection explicitly identifies it as 'Doc.Downloader.Emotet-9765458-0', strongly suggesting the Emotet family. The VBA macro itself is heavily obfuscated but its structure and the presence of a Document_Open auto-execution routine point towards a downloader functionality.

Heuristics 7

  • ClamAV: Doc.Downloader.Emotet-9765458-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9765458-0
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • GetObject call high OLE_VBA_GETOBJ
    GetObject 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
4b5417dbd98c86686e3f5f9c6557dfc9adc0cd727a7e10c1fb3ee22c8d8e412b		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 20383 bytes

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