Emotet — Office (OLE) malware analysis

Static analysis result for SHA-256 794d67613ccc4702…

MALICIOUS

Office (OLE)

148.4 KB Created: 2020-10-15 14:34:00 Authoring application: Microsoft Office Word
MD5: 07219ceeb43a33f6ba635793ccc3fe83 SHA-1: 0b5d35b7dfaa1b1213b22f186a1f2b482fd41220 SHA-256: 794d67613ccc4702b88d7ae6c9cbf12ea243a45c429477f0056f60f26dec28a9
202 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1140 Deobfuscate/Decode Files or Information

The file is identified as malicious by ClamAV with the signature 'Doc.Downloader.Emotet-9778224-0', indicating it's a downloader for the Emotet family. The presence of a 'Document_Open' VBA macro that uses 'CreateObject' strongly suggests the execution of malicious code upon opening. The VBA script contains obfuscated code, which is typical for Emotet downloaders aiming to deobfuscate and execute a second-stage payload.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-9778224-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9778224-0
  • 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
b2c5689ca3757fa4157ea59f16365cb334e68487bb4f8496fb867967402af424		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 12861 bytes

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