Emotet Office (OLE) / .DOCX malware analysis — malicious · cda1bf170e4f678b

MALICIOUS

Office (OLE) / .DOCX

176.6 KB Created: 2020-10-20 22:39:00 Authoring application: Microsoft Office Word

MD5: acdd2d2189d29c772fec985adb466b5c SHA-1: 827226c3942d8f392849204c839381e9b809bbad SHA-256: cda1bf170e4f678baeac39af84d506bde1d33ed9ccbc753273718f5bd2a503e0

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 in the 'macros.bas' file, combined with the auto-execution of Document_Open, suggests the macro is designed to run automatically upon opening the document. The CreateObject call is commonly used by malware to instantiate objects for executing commands or downloading payloads. The ClamAV signature 'Doc.Malware.Emotet-9781039-0' directly attributes this file to the Emotet family.

Heuristics 7

ClamAV: Doc.Malware.Emotet-9781039-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Emotet-9781039-0
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` `130bc91dd8b5ad391a87daabf287b6e2ceed1d78136a29ff57bedf25aa736586`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	18991 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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