Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 8bb0bf83fabae17a…

MALICIOUS

Office (OLE) / .DOCX

171.5 KB Created: 2020-10-21 13:56:00 Authoring application: Microsoft Office Word
MD5: f61a393b719e728c2cd61a00348cf3c8 SHA-1: 24c37365d163e3369f8b128b8eba3ca06a2fae4b SHA-256: 8bb0bf83fabae17ac116f654d04944c66027ecb3243a2831aeb6f87fc392bde8
240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File

The file contains a Document_Open VBA macro that is automatically executed upon opening. This macro utilizes CreateObject, a common technique for launching malicious payloads. The ClamAV detection name 'Doc.Dropper.EmotetUpdate1020-9778523-0' strongly suggests this is an Emotet variant designed to drop additional malware. The embedded URL, though benign, is part of the document's structure and not indicative of malicious intent in this context.

Heuristics 7

  • ClamAV: Doc.Dropper.EmotetUpdate1020-9778523-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.EmotetUpdate1020-9778523-0
  • 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
113d36c64715b3a3694b52821b832bd3a24df7013a1eebeaaceb4571875cbc4c
vba-macro oletools.olevba.extract_macros (decoded VBA source) 23319 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.