Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 755b0648467884ea…

MALICIOUS

Office (OLE) / .DOCX

211.5 KB Created: 2020-12-22 18:13:00 Authoring application: Microsoft Office Word
MD5: 27b7cecdb5d4eca07fc7c1cc5ec2e181 SHA-1: 857c83b78575e507455b9ba6bda4d3658f0c280a SHA-256: 755b0648467884ea407cb2be70ee59bdff597edec6e149816e553134e25aaf54
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 file is identified as malicious by ClamAV with the signature 'Doc.Downloader.EmotetRed02224-9938637-0', indicating it's a downloader. 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 itself is heavily obfuscated but the presence of these indicators strongly suggests the document's purpose is to download and execute a secondary payload, consistent with Emotet's behavior.

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
8962e4bb9060366f196bbaa9086a3c9775784f792d9952a2d2a973cddd73b89c		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 15531 bytes

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