Emotet Office (OLE) / .DOC malware analysis — malicious · 98b7ab7a1185220c

MALICIOUS

Office (OLE) / .DOC

187.9 KB Created: 2020-09-16 18:57:00 Authoring application: Microsoft Office Word

MD5: bec9812ab8901df0f7b22c3c89699edb SHA-1: faae51350c368538f4e7615dd68449f188af2a4c SHA-256: 98b7ab7a1185220c44567c8e6562c858a1aa47058efd0113421a2f4d7fa63231

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV with the signature Doc.Downloader.Emotet-9762284-0. Static analysis reveals the presence of VBA macros, specifically a Document_Open macro that is configured to execute upon opening the document. This macro utilizes CreateObject, indicating it's designed to perform actions beyond simple document manipulation, likely to download and execute a secondary payload. The combination of these factors strongly suggests an Emotet downloader variant.

Heuristics 7

ClamAV: Doc.Downloader.Emotet-9762284-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Emotet-9762284-0
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` `c8eacd47a01532c076db7a43a0d927f95cb78ca92fb9fc841101993b58287d9b`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	19132 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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