Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 71bab4125d8e5368…

MALICIOUS

Office (OLE) / .DOCX

156.7 KB Created: 2020-12-30 13:16:00 Authoring application: Microsoft Office Word
MD5: 1f485ef0fddf4d34e6e2ce071db0b2b9 SHA-1: e913642c443ef6931237b6f55165f9de306bd5dc SHA-256: 71bab4125d8e53687619ff03b3dd9d67b832995ca1998183e77db10e3c2e0c5d
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample contains a VBA macro that executes upon opening the document, as indicated by the Document_Open heuristic. This macro utilizes CreateObject to interact with the file system and appears to be designed to download and execute a second-stage payload, consistent with Emotet downloader behavior. The ClamAV detection name further supports the Emotet family attribution.

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
56a4885fb35696e61eb89c4193c6dbd09786b2db28cac633c3290a9c612d3393		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 6670 bytes

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