Emotet Office (OLE) / .DOCX malware analysis — malicious · c041d525830dc093

MALICIOUS

Office (OLE) / .DOCX

162.9 KB Created: 2020-10-16 14:09:00 Authoring application: Microsoft Office Word

MD5: 4a38fc067ec9fd739df1063ae225790e SHA-1: 5047ff2072e1b00b41d90cb15b4cf6f7db0fa21e SHA-256: c041d525830dc0931ba8595f644dd8464550c8e62933d48ba6801f11460b33a9

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1059.001 PowerShell

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 'macros.bas' and the 'OLE_VBA_PCODE_AUTOEXEC_EXEC' firing confirm that the document is designed to run code automatically when opened. This code is characteristic of Emotet's delivery mechanism, which typically involves downloading and executing further stages of malware.

Heuristics 7

ClamAV: Doc.Malware.Emotet-9778566-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Emotet-9778566-0
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` `29095f417e940309e4c3b74017a13ff70f85d23507d6b5296a03fa98c635a78b`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	15315 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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