Emotet — Office (OLE) / .DOC malware analysis

Static analysis result for SHA-256 02a25b3cab1903ab…

MALICIOUS

Office (OLE) / .DOC

171.3 KB Created: 2020-09-22 22:41:00 Authoring application: Microsoft Office Word
MD5: 81b6f0f8186cd683f1a8cafc44d958f3 SHA-1: 2868a5f2f302a3e12666eacf970cbc54ec5c19ba SHA-256: 02a25b3cab1903ab83fc2c6413b3b7008a66878a08c1215c3470b758d7e3f82d
242 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample contains VBA macros, including a Document_Open auto-execution macro, which is a common characteristic of Emotet. The VBA code is heavily obfuscated but the presence of CreateObject and GetObject calls, along with the ClamAV detection name 'Doc.Downloader.Emotet', strongly indicates that this document is designed to download and execute a secondary payload. The macro itself is the primary IOC.

Heuristics 7

  • ClamAV: Doc.Downloader.Emotet-9765458-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9765458-0
  • 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
d7a7a6c735f5c96696aaa87436c051b7ad4b34762239608b32d32a219302890d		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 20647 bytes

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