Emotet — Office (OLE) / .DOC malware analysis

Static analysis result for SHA-256 168b98aa3cbc414d…

MALICIOUS

Office (OLE) / .DOC

157.5 KB
MD5: c8084b50ae17beb971e9827e4cf8b3e2 SHA-1: 7a7674678aba01f113071b14181604f21ad8902e SHA-256: 168b98aa3cbc414dc9e298fce9dd377744df270a4d0298154583201d413a70ed
262 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1204.002 Malicious File

The sample is a malicious OLE document containing obfuscated VBA macros, specifically a Document_Open macro designed to execute code. Heuristics indicate an obfuscated auto-exec loader that uses CreateObject and Shell execution, consistent with downloading and running a second-stage payload. ClamAV detection further confirms its malicious nature as Emotet.

Heuristics 7

  • Obfuscated auto-exec VBA loader critical OLE_VBA_OBFUSCATED_AUTOEXEC_LOADER
    Auto-exec VBA reconstructs strings with a heavy custom decoder (numeric char-array, repeated hex-string decode, or junk-token Replace removal) and feeds them to a COM-instantiation or execution sink. This obfuscated-loader shape keeps CreateObject/Shell/URL indicators out of the macro source.
  • ClamAV: Doc.Downloader.EmotetRed0121-9822961-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.EmotetRed0121-9822961-0
  • 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
1b2b00055c80e68b6aa687bc64112642d1a28d5afaeaab4b15d181d8f231de3b		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 13500 bytes

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