Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 61cfd4ea81be7823…

MALICIOUS

Office (OLE) / .DOCX

163.5 KB Created: 2020-10-27 13:32:00 Authoring application: Microsoft Office Word
MD5: fed23b8c8fce742560bfe6e09c746fda SHA-1: 3ba9d6d5035497381d7b31b02a8acbb6db2519c1 SHA-256: 61cfd4ea81be782368c8d30c75eb00a25320ff41b8dfde0a39a0f9a22fcd45fc
202 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 Emotet infection vector. The macros utilize CreateObject to execute obfuscated PowerShell commands, as indicated by the heuristic firings and the presence of VBA code that appears to construct such commands. The ClamAV detection explicitly names this as an Emotet downloader, strongly suggesting its purpose is to fetch and execute further malicious content.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-9784225-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9784225-0
  • 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
aaf531f7a5bc5489efc2142934ae4807c7a8fc52a02b1483f9210c80918c01e7
vba-macro oletools.olevba.extract_macros (decoded VBA source) 16228 bytes