Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 5f6b7c56f5a98721…

MALICIOUS

Office (OLE) / .DOCX

156.4 KB Created: 2020-12-30 13:16:00 Authoring application: Microsoft Office Word
MD5: 26f66a7695d1fa3a2c65cc033083a881 SHA-1: 4118a7be596f696e30cfa66a8f794cd218c80f1a SHA-256: 5f6b7c56f5a98721b71d91dcd9a177298006b37c11ca8dc6b0bacae198e17fee
202 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

The sample contains VBA macros, including a Document_Open auto-execution macro, which is a common characteristic of Emotet. The VBA code uses CreateObject to interact with the file system, attempting to create files with obfuscated names in specific directories. This behavior suggests the macro is designed to download and execute a second-stage payload, aligning with Emotet's typical infection chain.

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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