Emotet Office (OLE) / .DOCX malware analysis — malicious · 9e7fae3ee803aeff

MALICIOUS

Office (OLE) / .DOCX

234.2 KB Created: 2020-08-12 10:24:00 Authoring application: Microsoft Office Word

MD5: bf9d790dc6f8561ef7cc7d0f49236e98 SHA-1: 018c6b5a525d5c7c6da40a82b17fa54988f81365 SHA-256: 9e7fae3ee803aeffdc327e19c356570b2cb70129cd428c000373b11813377fca

300 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1059.001 PowerShell

The file contains VBA macros, specifically a Document_Open macro that uses CreateObject to execute code. Critical heuristics indicate a hidden UserForm command stager, a common technique for Emotet. The ClamAV detection explicitly names Emotet. The macro likely downloads and executes a second-stage payload, consistent with Emotet's behavior.

Heuristics 8

VBA UserForm hidden-property command stager critical OLE_VBA_USERFORM_HIDDEN_COMMAND_STAGER

VBA auto-exec macro creates a COM object from a decoded variable and reconstructs command text through Split/Join and hidden UserForm properties such as ControlTipText, Tag, Pages, or HelpContextId. This is a high-confidence macro downloader/loader shape seen in the reviewed OLE set, but it is not an Office CVE exploit primitive.
ClamAV: Doc.Malware.Emotet-9290135-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Emotet-9290135-0
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.
Suspicious extracted artifact high EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
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.

Filename	Kind	Source	Size
`macros.bas` `921195515ad70085bdafce9672100259a87a60f9b2a96f38782f2793d13e274e`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	4217 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved macro source contains an auto-exec entry point and execution/download terms.

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