Emotet — Office (OLE) / .DOC malware analysis

Static analysis result for SHA-256 63e309a34a45ce85…

MALICIOUS

Office (OLE) / .DOC

167.5 KB
MD5: e1f8657cbe0da37d0a97d9f09c808a4d SHA-1: 778da08bbfb5c8d7cb4cf30df2fe836d7ecbd323 SHA-256: 63e309a34a45ce8531b8e6eb42b8a4708be04438e603f6e13004116075454139
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 contains heavily obfuscated VBA macros, including a Document_Open auto-execution routine. Heuristics indicate the use of CreateObject and execution sinks, typical for downloading and running further malicious content. ClamAV detection explicitly names this as an Emotet downloader variant, strongly suggesting its family and purpose.

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
7ca0390109e782c9e8f55c38a4fff76a3a65e73dfc2917176ac58f2fea8cca42		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 13381 bytes

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