Emotet Office (OLE) / .DOCX malware analysis — malicious · b15e644be48fe68c

MALICIOUS

Office (OLE) / .DOCX

172.5 KB Created: 2020-10-27 05:39:00 Authoring application: Microsoft Office Word

MD5: a63075235801c1abe6a7d2b31b8ffe1b SHA-1: a484959c02b5314a27b69134b0fab062e89f0138 SHA-256: b15e644be48fe68c11500258266ea197f1250797de8c53b4e52a3ce84c27f4c0

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 the Document_Open auto-execution and CreateObject calls, strongly indicate malicious intent. The presence of a VBA macro, identified as macros.bas, further supports this. The ClamAV signature 'Doc.Downloader.Emotet-9784225-0' suggests the file is a downloader, likely Emotet, designed to execute further stages. The document body, though heavily obfuscated, contains patterns consistent with macro execution.

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` `4ba1afe08d79409e1497ca07456a809cf749d23c9ed8d7cdfc9c80ecc4d07df6`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	15890 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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