Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 1ad8b92d9b6895d8…

MALICIOUS

Office (OLE) / .DOCX

174.7 KB Created: 2020-10-02 15:03:00 Authoring application: Microsoft Office Word
MD5: 78f0ff6a7e170fff1f536a8668a9aece SHA-1: 05918dc1ea6ad2eb63de8879e386042e8bf371d2 SHA-256: 1ad8b92d9b6895d877329d64f0075b186d884dc6d8004357965a1e6546a888da
240 Risk Score

Malware Insights

Emotet · confidence 95%

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

The critical ClamAV detection and high-severity heuristics for VBA macros, specifically the Document_Open auto-execution and CreateObject calls, strongly indicate a malicious downloader. The VBA p-code auto-execution with execution tokens further supports this. The presence of obfuscated VBA code and the detection name 'Emotet' point to the Emotet family. The primary function of the macro appears to be downloading and executing a second-stage payload.

Heuristics 7

  • ClamAV: Doc.Downloader.EmotetRed02224-9938637-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.EmotetRed02224-9938637-0
  • 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.
  • 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
9c73b282cef1909acf6926cc6a46e0c4c3197855b1b22198afbc8de664dfe7ba		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 10626 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 53 Chr/ChrW string-construction calls. Carved macro source contains an auto-exec entry point and execution/download terms.

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