Emotet Office (OLE) / .DOCX malware analysis — malicious · fc85d817147ea8b4

MALICIOUS

Office (OLE) / .DOCX

183.0 KB Created: 2020-10-27 09:55:00 Authoring application: Microsoft Office Word

MD5: b895b5af4061cc8d139192a2f0fafc54 SHA-1: 63051154f79c92e480967e0bcd13cc7aa7b26e5f SHA-256: fc85d817147ea8b457799df22080f51ec80b5c05cfe99b55e04e8be095830702

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File

The critical ClamAV detection and high-severity heuristics for VBA macros, specifically an auto-executing Document_Open macro that uses CreateObject, strongly indicate a malicious downloader. The presence of the 'Emotet' family in the ClamAV signature further supports this classification. The document body, though heavily obfuscated, contains patterns suggestive of script execution. The primary attack vector is the execution of embedded VBA macros to download and run a secondary payload.

Heuristics 7

ClamAV: Doc.Downloader.Emotet-9784225-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Emotet-9784225-0
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` `d266e0e433b4f1ca206b8db182ee793bd3229a389f65ad6b52e9aace0436fd0a`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	15938 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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