Emotet Office (OLE) / .DOCX malware analysis — malicious · 9fb0b5b80461d4c8

MALICIOUS

Office (OLE) / .DOCX

170.0 KB Created: 2020-09-16 14:22:00 Authoring application: Microsoft Office Word

MD5: 311ad62cbe827542a36becfcdcdb06e9 SHA-1: 2120ab5f8835ca58902040e27ec8bb3721bb36ea SHA-256: 9fb0b5b80461d4c8a8e660faab13bfcfcaa98fc1961db5d55af3ce165c21b779

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1059.001 PowerShell

The critical ClamAV detection and high-severity heuristics for VBA macros, specifically the Document_Open auto-execution and CreateObject calls, strongly indicate a malicious Emotet variant. The presence of a VBA macro in the macros.bas file, coupled with the auto-execution heuristic, suggests the macro is designed to run automatically when the document is opened, likely to download and execute a secondary payload.

Heuristics 7

ClamAV: Doc.Malware.Emotet-9762291-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Emotet-9762291-0
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.
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` `9f558458f94a18a1753cb250fa701b5a4b696c6db0138705a67ec847e6bae57b`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	21795 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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