Emotet — Office (OLE) malware analysis

Static analysis result for SHA-256 621533bc2bc62367…

MALICIOUS

Office (OLE)

136.1 KB Created: 2020-10-15 10:28:00 Authoring application: Microsoft Office Word
MD5: 6ebabf909fd90fd79195ea95932fe742 SHA-1: e77d4fae8c7e6642d11771ae1c0a6d9bc866f45f SHA-256: 621533bc2bc623677cc1a56accac5406ad7f2e7b5f6ea41fe8acfb3de5345859
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The file is identified as malicious by ClamAV with the signature 'Doc.Downloader.Emotet-9778182-0', indicating it's a downloader for the Emotet family. The presence of a VBA macro, specifically a 'Document_Open' macro that uses 'CreateObject', strongly suggests it's designed to execute arbitrary code. This macro likely downloads and executes a second-stage payload, a common Emotet behavior.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-9778182-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9778182-0
  • 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
61d5057f532c30cd6ac7bc258d49a0caf86ce433c8ada79ce978d7da665d558b		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 11395 bytes

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