Emotet — Office (OLE) / .DOC malware analysis

Static analysis result for SHA-256 90d9bbe9de3e3878…

MALICIOUS

Office (OLE) / .DOC

173.2 KB Created: 2020-09-23 04:35:00 Authoring application: Microsoft Office Word
MD5: ad8d4d50d60c928d8954b660a1112b89 SHA-1: 8420c4d526bc828ae93475db4e4e5c88db0d2002 SHA-256: 90d9bbe9de3e387810dd06cd432384b1057160c4262ba6887089bf7f667f9c0d
280 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1204.002 Malicious File

The file contains a malicious VBA macro, specifically a Document_Open auto-exec macro, which is a common characteristic of Emotet. The macro utilizes CreateObject and GetObject calls, indicating it attempts to download and execute a second-stage payload. The ClamAV detection explicitly names this as 'Doc.Downloader.Emotet-9765458-0', strongly supporting the Emotet family attribution and the downloader attack pattern.

Heuristics 8

  • 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.
  • Suspicious extracted artifact high EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • 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
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.

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