Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 02451c13f63ed93c…

MALICIOUS

Office (OLE) / .DOCX

170.3 KB Created: 2020-09-16 14:22:00 Authoring application: Microsoft Office Word
MD5: e41c4cc31e66ce4dcd61fa8ef78d7c40 SHA-1: e03fff43707120883b260f91635a6c468501590c SHA-256: 02451c13f63ed93c6ed0c0e4a3025100834fd59eeaa78acff45d726c056b2293
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample is identified as malicious by ClamAV with a specific Emotet signature. Heuristics indicate the presence of VBA macros, specifically a Document_Open auto-execution macro that utilizes CreateObject, a common technique for Emotet to download and execute further payloads. The VBA code, while obfuscated, suggests an attempt to execute arbitrary code.

Heuristics 6

  • ClamAV: Doc.Malware.Emotet-9762291-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emotet-9762291-0
  • 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
9f558458f94a18a1753cb250fa701b5a4b696c6db0138705a67ec847e6bae57b
vba-macro oletools.olevba.extract_macros (decoded VBA source) 21795 bytes