Emotet Office (OLE) / .DOC malware analysis — malicious · de8ee9d6ff5217db

MALICIOUS

Office (OLE) / .DOC

205.7 KB Created: 2019-12-19 23:35:00 Authoring application: Microsoft Office Word

MD5: e09bc4b0a05a2a26510520cfd46c7e8e SHA-1: 1691204092abed87eec3958e13ba484ebfea9574 SHA-256: de8ee9d6ff5217db052c005f8e49a89873ee06eeae2acf202c3de1f3d9a33e0e

340 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1204.002 Malicious File

The file is a Microsoft Word document containing VBA macros. Critical heuristics indicate a hidden UserForm command stager that uses `CreateObject` and `GetObject` within an auto-executing macro (`Document_Open`). This pattern is strongly associated with Emotet, a known downloader family. The presence of `macros.bas` is noted as a suspicious extracted artifact. The primary function appears to be the execution of a stager to download further malicious content.

Heuristics 9

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.Downloader.Emotet-7592078-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Emotet-7592078-0
Document_Open macro high OLE_VBA_DOCOPEN

Document_Open macro
CreateObject call high OLE_VBA_CREATEOBJ

CreateObject call
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.
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` `11652af314a4cb01ee5bab630e694d7a6ff51a41150f073da0906b0071cc02f3`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	13577 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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