Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 0a9a431a99ca13b4…

MALICIOUS

Office (OLE) / .DOCX

131.0 KB Created: 2020-09-30 18:26:00 Authoring application: Microsoft Office Word
MD5: faf02bbcf15d360a8934f67c085eeb6f SHA-1: e602463adeb48e2b6d4468b62d925c7f6c4b4956 SHA-256: 0a9a431a99ca13b4bc960ce6948bfaf964b8dff0c1de931ed484ee8c8967a430
202 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The sample was detected as malicious by ClamAV with the signature 'Doc.Downloader.Emotet-9769771-0', indicating a known Emotet downloader variant. High-severity heuristics confirm the presence of VBA macros, specifically a 'Document_Open' macro that uses 'CreateObject', a common technique for executing malicious code. The VBA script's obfuscated nature and the 'CreateObject' call suggest it is designed to download and execute a secondary payload.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-9769771-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9769771-0
  • 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
e5aaf9f3439fc51732c94523035a3e61bc2d17c21b6cf92e4d7bbe4fa685ceb9		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 10171 bytes

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