Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 1579f95d827058f2…

MALICIOUS

Office (OLE) / .DOCX

162.0 KB Created: 2020-10-27 13:32:00 Authoring application: Microsoft Office Word
MD5: 71b215eb3d746b761d9b7f66eb7a25ee SHA-1: 3a89dda072637a058b647f192201f2d8fc90a6f2 SHA-256: 1579f95d827058f2a00a625b72a690d34b2574a53c5c6ad713e40185b7075bbc
202 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1204.002 Malicious File

The sample contains VBA macros, including a Document_Open auto-execution macro, which is a strong indicator of malicious intent. The ClamAV detection explicitly identifies it as 'Doc.Downloader.Emotet-9784225-0'. The VBA script likely uses CreateObject to execute a PowerShell command, as suggested by the heuristics, which would then download and execute a secondary payload.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-9784225-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9784225-0
  • 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
aaf531f7a5bc5489efc2142934ae4807c7a8fc52a02b1483f9210c80918c01e7
vba-macro oletools.olevba.extract_macros (decoded VBA source) 16228 bytes