Emotet Office (OLE) / .DOC malware analysis — malicious · 6aca150abeab5401

MALICIOUS

Office (OLE) / .DOC

190.9 KB Created: 2020-07-17 19:04:00 Authoring application: Microsoft Office Word

MD5: 7da6ab3fd5a46b25dc08b014c5b0e7cb SHA-1: 309ab92dabccf4b1cd258a85cbc70d28b5f93183 SHA-256: 6aca150abeab5401a28dcbc61bc52bc8deb268e7c9df9698ae957fecea368d50

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 sample contains VBA macros, including a Document_Open macro and a hidden UserForm command stager, which are indicative of Emotet. The ClamAV detection explicitly names Emotet and identifies the file as a downloader. The VBA script attempts to construct a string using character concatenation, likely to form a URL or command for downloading 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-10022426-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Emotet-10022426-0
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.
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` `7c56f8352b0a58a54e5fe774f1ee8f69f7f6c740987e623921b9b17b2f14ca6a`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	71503 bytes

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