Emotet Office (OLE) / .DOC malware analysis — malicious · 748f1de4fe7b5a64

MALICIOUS

Office (OLE) / .DOC

199.9 KB Created: 2019-12-18 23:23:00 Authoring application: Microsoft Office Word

MD5: 5e360d3ad6d42edd0abaa8e34cce25d2 SHA-1: 3096cc5eca588eefce1ed3d6e433834c5dcb0a90 SHA-256: 748f1de4fe7b5a64ca5b23ed7a691aac2ddc9a121eb3c82394ea320650063f8a

262 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file contains VBA macros, including a Document_Open macro and a hidden UserForm command stager, which are indicative of malicious intent. ClamAV detection confirms this, identifying it as Emotet. The macro likely acts as a downloader for a secondary payload.

Heuristics 7

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-7465038-1 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Emotet-7465038-1
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.

Filename	Kind	Source	Size
`macros.bas` `dcfcc895cb193cfa88679924d00ad9cc54b6c92b9502f6012e548a1e9c81c927`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	10975 bytes

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