Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 5a3f37932807ab99…

MALICIOUS

Office (OLE) / .DOCX

170.3 KB Created: 2020-09-22 18:42:00 Authoring application: Microsoft Office Word
MD5: a243e05c798b941d598004e990f63a44 SHA-1: 71122cc8812bd6626c6f2c3f94cf6403c6f68397 SHA-256: 5a3f37932807ab99f3d81cbfd00a0588d1f05fdffa28eb424d1d4d7c1906147b
242 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 technique for Emotet. The heuristics indicate the use of CreateObject and GetObject, suggesting dynamic execution of code. The ClamAV detection explicitly names Emotet. The VBA code appears to be obfuscated but is designed to execute a payload, likely by downloading it from a remote source.

Heuristics 7

  • ClamAV: Doc.Downloader.Emotet-9765458-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9765458-0
  • 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
4c1d45ab400998e9849e03fb488749a88ec1375f45fc179ad034e6ee3d25ecfd		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 21065 bytes

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