Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 b3240fbb14733b9f…

MALICIOUS

Office (OLE) / .DOCX

200.2 KB Created: 2020-09-17 11:51:00 Authoring application: Microsoft Office Word
MD5: ab62e0856d1469c8dfa12d9297eb8aba SHA-1: 89eb8c0d5b79f9f6baa97c822caa519e2ebe9354 SHA-256: b3240fbb14733b9f558fe30cb147d6e9c00992afa71b7dbe652f5fb9174b55c0
240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File T1105 Ingress Tool Transfer

The file contains VBA macros, specifically a Document_Open auto-execution macro, which is a strong indicator of malicious intent. The ClamAV detection explicitly names this as Emotet, a known banking trojan and downloader. The macro likely downloads and executes a second-stage payload, consistent with Emotet's typical behavior. The presence of a long encoded blob and suspicious extracted artifacts further supports this assessment.

Heuristics 7

  • ClamAV: Doc.Dropper.EmotetWinMob0920-9636503-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.EmotetWinMob0920-9636503-0
  • 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.
  • Suspicious extracted artifact high EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • 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
c3286e68fa3d09f0094cde843da13ffd003c4769e3d53082fc234c009c46407c		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 19881 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 20 long base64-like blob(s). Carved macro source contains an auto-exec entry point and execution/download terms.

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