Emotet Office (OLE) / .DOCX malware analysis — malicious · bcd43a28292c3b23

MALICIOUS

Office (OLE) / .DOCX

201.2 KB Created: 2020-12-22 06:39:00 Authoring application: Microsoft Office Word

MD5: c36205e717bd39b6290b8e59617284fd SHA-1: 3e964b0dcf8c4943674899a80439efa275467f9d SHA-256: bcd43a28292c3b23ddb842d173e09e82095f9de58af9eb9feec0035c916e8156

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

The file is identified as malicious by ClamAV with the signature 'Doc.Downloader.Emotet-10024800-0'. Heuristics indicate the presence of VBA macros, specifically a Document_Open auto-execution macro that uses CreateObject. This suggests the macro is designed to download and execute a second-stage payload. The extracted DOC BODY, though heavily obfuscated, contains strings that appear to be part of a malicious script. The presence of a VBA macro and the Emotet family attribution strongly point to a downloader attack pattern.

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` `87b72d633bd79d3d21c1246dbcc11e62ebdefc06e96dee650ec7c8e181386692`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	16335 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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