Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 130e863a38580cb4…

MALICIOUS

Office (OLE) / .DOCX

162.1 KB Created: 2020-12-30 10:10:00 Authoring application: Microsoft Office Word
MD5: 6f906a6d3622eaec688171b728c19582 SHA-1: 43fa383b5cba6e6c03777555c1fcafcc163f748d SHA-256: 130e863a38580cb4113b3a1ac7820638134d6a548115152e3e1bd910d88240e6
202 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1059 Command and Scripting Interpreter T1566.001 Spearphishing Attachment

The sample contains a VBA macro that is automatically executed upon opening the document, as indicated by the 'Document_Open' macro and 'OLE_VBA_PCODE_AUTOEXEC_EXEC' heuristic. The script utilizes 'CreateObject' to interact with the file system, attempting to create files with specific paths and write data to them. This behavior is characteristic of malware that downloads and executes a second-stage payload. The ClamAV detection name 'Doc.Downloader.EmotetRed02224-9938637-0' strongly suggests the Emotet family.

Heuristics 6

  • ClamAV: Doc.Downloader.EmotetRed02224-9938637-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.EmotetRed02224-9938637-0
  • 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
663869ec393d0a50f151da4884835577fc196722b5e56686c64f3948abebb4bb		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 6571 bytes

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