Emotet Office (OLE) / .DOCX malware analysis — malicious · 9021f238c3c11aef

MALICIOUS

Office (OLE) / .DOCX

134.7 KB Created: 2020-09-28 07:04:00 Authoring application: Microsoft Office Word

MD5: 39f22cfe52dada54e594d64910501118 SHA-1: 2955524d219a826f783927202108284afb4ef414 SHA-256: 9021f238c3c11aef5eae9f68513835b58b7032286c556184df18e151c7923080

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 heuristic identifies this file as Emotet, a known downloader. High-severity heuristics confirm the presence of VBA macros, specifically a Document_Open auto-execution macro that utilizes CreateObject. This indicates the macro is designed to run automatically and likely download additional malware. The document body content is heavily obfuscated and does not provide clear user-facing text, further suggesting a malicious intent behind the macro execution.

Heuristics 7

ClamAV: Doc.Downloader.Emotet-9768657-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Emotet-9768657-0
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` `e75df2f1d58eb5949c0678a2356db3178c4d0bfd05af2a59d3cebacf3557baf1`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	6244 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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