Emotet — Office (OLE) / .DOC malware analysis

Static analysis result for SHA-256 b7049cf77a2d62b6…

MALICIOUS

Office (OLE) / .DOC

178.0 KB Created: 2020-10-26 07:23:00 Authoring application: Microsoft Office Word
MD5: a8d86fdab830234fb24aca4d73703ea8 SHA-1: 761b1c32cadd3cf2c68d53d00b43552e37e7801c SHA-256: b7049cf77a2d62b677fc286e24a224fa67ca74e5aa6b1d48227f94fb37c358fa
240 Risk Score

Malware Insights

Emotet · confidence 95%

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

The critical ClamAV detection and high-severity heuristics for VBA macros, including Document_Open auto-execution and CreateObject calls, strongly indicate malicious intent. The presence of a VBA macro in macros.bas, coupled with the auto-execution of Document_Open, suggests the script is designed to run automatically upon opening the document. This script likely downloads and executes a second-stage payload, consistent with Emotet's typical behavior. The document body's obfuscated nature further supports a malicious lure.

Heuristics 7

  • ClamAV: Doc.Downloader.Emotet-9784039-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9784039-0
  • 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
b32ea3f2c5f61ed2002ab3a6ff62f143198fe67a0f56f5ed3e4d2fa09ce2cba4		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 15980 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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