Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 0f84086df046d824…

MALICIOUS

Office (OLE) / .DOCX

215.0 KB Created: 2020-10-27 05:52:00 Authoring application: Microsoft Office Word
MD5: fd4ac9911fd5d2e4c7bf0e0a72ab391a SHA-1: 5200dfb6fe1bf18500ab07f1303c722c7a52d28b SHA-256: 0f84086df046d8247545c6850bdd674cc2ec7f6917a000402e5601f869877440
202 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1140 Deobfuscate or Obfuscate Malicious Code

The sample is identified as malicious by ClamAV with the signature 'Doc.Downloader.Emotet-9784225-0', indicating a downloader variant of the Emotet family. The presence of a 'Document_Open' macro that uses 'CreateObject' strongly suggests the execution of malicious code upon opening the document. The VBA script is heavily obfuscated, but its structure and the heuristic firings point towards the deobfuscation and execution of 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
876efd50e919d9082c47104a676f266739e3ebd392e529f593b7ea04deb8a95e		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 16361 bytes

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