Emotet — Office (OLE) / .DOC malware analysis

Static analysis result for SHA-256 5d7bd5ab1f0ef9fe…

MALICIOUS

Office (OLE) / .DOC

125.0 KB Created: 2019-05-22 19:13:00 Authoring application: Microsoft Office Word
MD5: 659f175cbd422379fe3a6a63c5b1f640 SHA-1: 61af3732c39c9ec9e6b0bd1234eba2ccfe8a42e6 SHA-256: 5d7bd5ab1f0ef9fe49f97b49fc955f64a9878fc341650143d572b24126f1284b
262 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample is a malicious Word document containing obfuscated VBA macros. The 'autoopen' macro triggers the execution of a loader function that uses WMI to create a new process. The ClamAV signature 'Doc.Downloader.Emotet-10001946-0' strongly suggests this is an Emotet variant, likely designed to download and execute a secondary payload.

Heuristics 7

  • Obfuscated auto-exec VBA loader critical OLE_VBA_OBFUSCATED_AUTOEXEC_LOADER
    Auto-exec VBA reconstructs strings with a heavy custom decoder (numeric char-array, repeated hex-string decode, or junk-token Replace removal) and feeds them to a COM-instantiation or execution sink. This obfuscated-loader shape keeps CreateObject/Shell/URL indicators out of the macro source.
  • ClamAV: Doc.Downloader.Emotet-10001946-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-10001946-0
  • 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
c26416a315d0d1c2f40172a9691eaa75aebd41113326576d4e2f812fd6246f02		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 3185 bytes

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