Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 5f1f839b1ab380c3…

MALICIOUS

Office (OLE) / .DOCX

131.4 KB Created: 2020-10-14 12:13:00 Authoring application: Microsoft Office Word
MD5: 1b77cd7f12236dc595a304899daf3769 SHA-1: 104d81c481efc1d6fdae3102e2f7bcefd2fb617a SHA-256: 5f1f839b1ab380c3fe020e8c363656ee9d784ddd16e3441164f80cd66d25b69c
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample was detected as malicious by ClamAV with the signature 'Doc.Downloader.Emotet-9778018-0', indicating a known downloader. The presence of a Document_Open macro and CreateObject calls strongly suggests the execution of malicious VBA code. This code is likely responsible for downloading and executing a secondary payload, a common tactic for the Emotet family.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-9778018-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9778018-0
  • 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
9ff2f6164d63cd97fef8963d2b7a6ca348ed28032df5d8d3d018a1f3d500bd9b		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 9476 bytes

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