Emotet Office (OLE) / .DOCX malware analysis — malicious · 18f375d906194321

MALICIOUS

Office (OLE) / .DOCX

162.9 KB Created: 2020-09-14 06:44:00 Authoring application: Microsoft Office Word

MD5: 20ba1a6089dfa448abf0019b5a4c3723 SHA-1: c7a288dac03ce7a0f88dbe1c2f5c43de23cd379f SHA-256: 18f375d906194321adf18d6b5a5218a0a0476e0ff78b0dec48a6775a5f966b4d

202 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 is a Microsoft Office document containing VBA macros, specifically a Document_Open macro that utilizes CreateObject to execute code. ClamAV detection confirms this as Emotet malware. The VBA code appears to be heavily obfuscated, but its intent is to download and execute a secondary payload, a common Emotet tactic. The embedded URL was confirmed benign and is likely a false positive or part of the obfuscation.

Heuristics 6

ClamAV: Doc.Malware.Emotet-9762310-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Emotet-9762310-0
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` `94aa0eae3715e5e4c777d8559a3d12a3d055d6c09f9bd5aa9415cdba60070681`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	25226 bytes

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