Emotet Office (OLE) malware analysis — malicious · 6f7885a8876fa4d1

MALICIOUS

Office (OLE)

232.8 KB Created: 2020-08-14 19:54:00 Authoring application: Microsoft Office Word

MD5: 09dc04e48250c57a3c5bbb781cc63568 SHA-1: 86acda7f9f55d8a5db2aef1d4fde93785c5937fa SHA-256: 6f7885a8876fa4d1cbc42c10aba9d34cb52a2965ef6b3927e8fd820da075660b

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 malware. The ClamAV detection explicitly names Emotet. The VBA script's obfuscated nature and use of CreateObject suggest it is designed to download and execute 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-9343215-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Emotet-9343215-0
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` `4b0a78118ae568a9116b2d22e79ca63ea488f6f6c4ff3800cb272825913d5d5c`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	8149 bytes

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