Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 5d282237d6e5c0b3…

MALICIOUS

Office (OLE) / .DOCX

151.9 KB Created: 2020-09-22 07:23:00 Authoring application: Microsoft Office Word
MD5: 4d7361c69fba21b032129dfde5c0327a SHA-1: f0003d47e8ad4e2d2cc2446acc545a3cd74d52b9 SHA-256: 5d282237d6e5c0b30771b81556082a026563fc848280761cf0b375a39f36245f
242 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample contains VBA macros, including a Document_Open auto-execution macro, which is a common technique for Emotet. The ClamAV detection explicitly names Emotet and identifies it as a downloader. The VBA code appears to be obfuscated but uses CreateObject and GetObject, indicative of payload execution. The primary function of this macro is to download and execute a second-stage payload.

Heuristics 7

  • ClamAV: Doc.Downloader.Emotet-9765070-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9765070-0
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • GetObject call high OLE_VBA_GETOBJ
    GetObject 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
37ce3f491be0f3d0a753fc5c7339c798cd89a6843cff6094a48ab180ad94ccb1		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 16563 bytes

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