Emotet Office (OLE) / .DOCX malware analysis — malicious · 8e9462c9a3766b0a

MALICIOUS

Office (OLE) / .DOCX

153.6 KB Created: 2020-10-16 06:31:00 Authoring application: Microsoft Office Word

MD5: 7932544cd9b9637c55faabfb7510ecde SHA-1: 7f0f0e54c71b0dbdb5fdf94d70beaa3a7b03cc4a SHA-256: 8e9462c9a3766b0a41a21d609caf5c36fd65d502b5e17bde7bb2a99628d16bd6

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 'macros.bas' file further supports this. The Emotet family is identified due to the specific ClamAV signature. The document body content is heavily obfuscated and does not provide direct clues to the attack pattern, but the VBA macro execution is the primary driver of the malicious activity, likely downloading and executing a second-stage payload.

Heuristics 7

ClamAV: Doc.Downloader.Emotet-9778460-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Emotet-9778460-0
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` `d61a5c08d74b05c0be099936f48870810cfcd0fa95621c486c59e0d00fa9de51`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	15430 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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