Emotet Office (OLE) / .DOC malware analysis — malicious · f4faec49de959866

MALICIOUS

Office (OLE) / .DOC

307.5 KB Created: 2019-10-11 17:58:00 Authoring application: Microsoft Office Word

MD5: 8dff91514efe1f028b42517e0052156b SHA-1: 92a73e233314d8c402b91a4a2ff286d61f007406 SHA-256: f4faec49de959866a28da4d18cb4818f11f4ffb8eceb3856bbf90caa21933b1d

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1204.002 Malicious File

The file is detected as malicious by ClamAV with the signature Doc.Downloader.Emotet-7330698-0, indicating it is likely an Emotet downloader. High-severity heuristics confirm the presence of VBA macros, specifically an AutoOpen macro that uses GetObject for execution. The embedded 'macros.bas' file is the source of these malicious macros. The primary attack pattern involves the AutoOpen macro executing a payload, likely downloaded from an external source, which is characteristic of Emotet's delivery mechanism.

Heuristics 7

ClamAV: Doc.Downloader.Emotet-7330698-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Emotet-7330698-0
AutoOpen macro high OLE_VBA_AUTOOPEN

AutoOpen macro
GetObject call high OLE_VBA_GETOBJ

GetObject 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` `87f35e5174e237ed3db808b434f7fdc2e9272ba19ab766bfbfa40000e004d148`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	245327 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 448 Chr/ChrW string-construction calls.

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