Emotet — Office (OLE) / .DOC malware analysis

Static analysis result for SHA-256 7694066b23ea826b…

MALICIOUS

Office (OLE) / .DOC

210.2 KB Created: 2018-06-27 21:36:00 Authoring application: Microsoft Office Word
MD5: 7a0e78ce8cccb72e9c39910df15490ba SHA-1: 5c26eb1856e7c814370476a900148da49d79a9e1 SHA-256: 7694066b23ea826ba0367777fe1f3e1b479a7fe3bac84adab2ae30f171ac1d5d
222 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1059 Command and Scripting Interpreter T1204.002 Malicious File

The sample is a malicious Office document containing VBA macros. The AutoOpen macro triggers a Shell() call, which is a strong indicator of a downloader. ClamAV detection explicitly names this as Emotet, a known downloader family. The VBA script appears to be obfuscated but the presence of Shell() and the Emotet family attribution strongly suggest it downloads and executes a second-stage payload.

Heuristics 6

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • ClamAV: Doc.Downloader.Emotet-7169110-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-7169110-0
  • AutoOpen macro high OLE_VBA_AUTOOPEN
    AutoOpen macro
  • 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
6b70da187be171282442f55d7205fa515a4ddf5bff9e9b86d309b1ba688d371e		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 8776 bytes

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