Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 68b775c77b26ff2b…

MALICIOUS

Office (OLE) / .DOCX

191.2 KB Created: 2020-10-01 23:03:00 Authoring application: Microsoft Office Word
MD5: 106b08926f8b66e13548481bb9242032 SHA-1: 07c9c60a6a3febdcf9f5c50e36a21ae3ce3ab363 SHA-256: 68b775c77b26ff2bef9e30623e76ec0cc3128213aae2edf12a4e74597b992f75
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 is identified as malicious by ClamAV with a signature indicating it's a downloader, specifically 'Doc.Downloader.EmotetRed02224-9938637-0'. Static analysis reveals the presence of VBA macros, including a Document_Open auto-exec function that utilizes CreateObject. This strongly suggests the macro's purpose is to download and execute a secondary payload, a common tactic for Emotet. The obfuscated nature of the VBA code prevents a more detailed analysis of the specific download URL or execution method.

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
6e0386e028be270039c4fe002fdf7015e999e4b27f1ccfca8c4209474f6ee6f3		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 10412 bytes

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