Emotet Office (OLE) / .DOCX malware analysis — malicious · fde9a1366af7493d

MALICIOUS

Office (OLE) / .DOCX

220.5 KB Created: 2020-10-28 06:34:00 Authoring application: Microsoft Office Word

MD5: f2dcdc6354482b2a9833d22a97973aa7 SHA-1: f1bef83f6d94bb3e25fe51d0853992b2f6dc89b9 SHA-256: fde9a1366af7493d4af6f9f2c8449966a24032cc961d00ae73b81363f36cbb75

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

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

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 suggest the macro is designed to run automatically and execute code. This is consistent with Emotet's typical behavior of downloading and executing further stages. The document body content is heavily obfuscated and does not provide clear user-facing text, but the technical indicators are definitive.

Heuristics 7

ClamAV: Doc.Malware.Emotet-9784450-1 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Emotet-9784450-1
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` `5c8508b4422f9cf9f0517311e463bebb8a10b40538c4b01e1d12399253dacfe3`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	16608 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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