Emotet — Office (OLE) / .DOC malware analysis

Static analysis result for SHA-256 e90b47c43f4a2fdd…

MALICIOUS

Office (OLE) / .DOC

172.5 KB Created: 2019-03-29 11:51:00 Authoring application: Microsoft Office Word
MD5: 86e6b30d134a27b17ad9d40ea1cf7302 SHA-1: b16afe7b2cd1de879902844d4da60a63c950bd7b SHA-256: e90b47c43f4a2fddbd0252051c34fccb92a00d56cb210cc60ad0e4046a15f7fd
200 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File

The file is identified as malicious by ClamAV with the signature Doc.Downloader.Emotet-6916021-0. Static analysis reveals the presence of VBA macros, specifically an AutoOpen macro, which is a common delivery mechanism for Emotet. The GetObject call within the macro suggests an attempt to load and execute external code. The overall behavior points to a downloader designed to fetch and run a second-stage payload.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-6916021-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-6916021-0
  • AutoOpen macro high OLE_VBA_AUTOOPEN
    AutoOpen macro
  • 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
e43aa0e3abeb3971a5e03fcf5d56a33b52c20633b5cac35bd9cee2025f62e9df		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 24510 bytes

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