Emotet Office (OLE) / .DOCX malware analysis — malicious · cd8525f959b4c310

MALICIOUS

Office (OLE) / .DOCX

201.6 KB Created: 2020-12-21 13:51:00 Authoring application: Microsoft Office Word

MD5: d9db3c40c53b786cb43e29301d53928a SHA-1: 6b3c1d4fb6f78cee0edc20ebe2a6d1bed3c01b89 SHA-256: cd8525f959b4c310c5a4b0b1a1b23f99466c5446f74de133da56c8c2d3b54c34

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 Emotet. The presence of a VBA macro in 'macros.bas' and the detection of VBA p-code auto-execution with execution tokens further support this. The document body, though heavily obfuscated, contains text that appears to be a lure related to a Word error, intended to prompt macro execution for downloading a second-stage payload.

Heuristics 7

ClamAV: Doc.Downloader.Emotet-10024800-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Emotet-10024800-0
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` `2b9ea9508201ca52b68627b510c681a978bf300b4bdc4157831522ad5544bdf3`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	10348 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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