Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 72b8d072d5664939…

MALICIOUS

Office (OLE) / .DOCX

224.1 KB Created: 2020-09-21 04:09:00 Authoring application: Microsoft Office Word
MD5: 8921de4213535c8bf0475b72127fbbb2 SHA-1: b1c8e0c8859f9544d6255ccd6988f674d0433c60 SHA-256: 72b8d072d56649395e4d9e5078857a3085e7e358d26dd47ac710dd325686e530
242 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The sample was detected by ClamAV as 'Doc.Dropper.EmotetIOS-9402070-0', indicating a known Emotet variant. High-severity heuristics confirm the presence of VBA macros, specifically a Document_Open macro that utilizes CreateObject and GetObject calls, which are common for executing malicious code. The VBA script is heavily obfuscated but its structure and the heuristic firings strongly suggest it's designed to download and execute a second-stage payload.

Heuristics 7

  • ClamAV: Doc.Dropper.EmotetIOS-9402070-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.EmotetIOS-9402070-0
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • GetObject call high OLE_VBA_GETOBJ
    GetObject 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
5616715bcc9f37a507701fce0794395b42220e4bc894eb29a7aefa2b3d5ff263		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 19230 bytes

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