Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 8561e1ca440f1b8e…

MALICIOUS

Office (OLE) / .DOCX

167.6 KB Created: 2020-10-20 05:21:00 Authoring application: Microsoft Office Word
MD5: 26e57c17c5269c2d72bbfc5daf824ae5 SHA-1: ed28752516caad1e1df841c6a009ae9519e733be SHA-256: 8561e1ca440f1b8ec672c654f6c7fc0873e6ab1b359c3fed1b20681c6899b12b
202 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1059 Command and Scripting Interpreter

The sample is identified as malicious by ClamAV with the signature 'Doc.Downloader.Emotet-9780828-0', strongly suggesting the Emotet family. Static analysis reveals the presence of VBA macros, specifically a 'Document_Open' macro that utilizes 'CreateObject' to execute code. This macro is designed to download and execute a second-stage payload, a common Emotet tactic.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-9780828-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9780828-0
  • 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
4588401bd42bd39b75b9dcc9e4ef6377522769140839001e1d2af1038d6019be
vba-macro oletools.olevba.extract_macros (decoded VBA source) 17619 bytes