Emotet Office (OLE) / .DOCX malware analysis — malicious · 77641e6ce42f0cfb

MALICIOUS

Office (OLE) / .DOCX

133.6 KB Created: 2020-09-28 07:04:00 Authoring application: Microsoft Office Word

MD5: b6e8733190b6c6ae7e12b5204c80274c SHA-1: 541fb3dd19ad8e264dbfa55c55ef7f8a5b8a7e86 SHA-256: 77641e6ce42f0cfb1e07679d1910a7c600c2a36aacb8c3839596271c047dc0cc

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

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

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 VBA macros, coupled with the ClamAV signature 'Doc.Downloader.Emotet-9768657-0', points to the Emotet family. The primary function appears to be the execution of a downloader, likely to fetch and run additional malware.

Heuristics 7

ClamAV: Doc.Downloader.Emotet-9768657-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Emotet-9768657-0
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` `e75df2f1d58eb5949c0678a2356db3178c4d0bfd05af2a59d3cebacf3557baf1`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	6244 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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