Emotet Office (OLE) / .DOC malware analysis — malicious · f9c63c0d5d66e2f4

MALICIOUS

Office (OLE) / .DOC

177.7 KB Created: 2020-09-16 07:23:00 Authoring application: Microsoft Office Word

MD5: c2543337b65785f3848f79339a3404e6 SHA-1: 3c4eb1b83d25c80faa39719fcd70c1b8a9c83764 SHA-256: f9c63c0d5d66e2f49e040cf55d8d3e74e1bda1b7b93767c9ecf9e828c83f3018

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File

The file is identified as malicious by ClamAV with the signature 'Doc.Downloader.Emotet-9762584-0', strongly indicating the Emotet family. High-severity heuristics confirm the presence of VBA macros, specifically a 'Document_Open' macro that uses 'CreateObject' for execution. This suggests the macro is designed to automatically run upon opening the document, likely to download and execute a secondary payload. The presence of a VBA macro source file ('macros.bas') further supports this. No specific URLs or other IOCs were extracted beyond the ClamAV signature.

Heuristics 7

ClamAV: Doc.Downloader.Emotet-9762584-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Emotet-9762584-0
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` `2d8500789fa465e9212ff4cb1bf4549ad5bb87c2ab3fef32e4d420598603fda8`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	25086 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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