Emotet Office (OLE) / .DOC malware analysis — malicious · 52d4dcd449517b10

MALICIOUS

Office (OLE) / .DOC

159.5 KB Created: 2020-10-26 20:02:00 Authoring application: Microsoft Office Word

MD5: cfb58e0b1ceede7d5501fad69e0ee5c2 SHA-1: bb917ec9cca6f7cc515b42f4e5efbe4413577a1f SHA-256: 52d4dcd449517b101bb99988f9b270b9785a8987cc4edf558f18fa0bbd5bb438

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-9784039-0. Static analysis revealed the presence of VBA macros, specifically a Document_Open macro that utilizes CreateObject calls. This indicates the macro is designed to execute automatically upon opening the document, likely to download and execute a secondary payload. The presence of the 'macros.bas' file further supports the macro-based execution vector.

Heuristics 7

ClamAV: Doc.Downloader.Emotet-9784039-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Emotet-9784039-0
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` `25a58c4e712d1085864e82f7ab775526ec6adf7a6a7c9b5168c373897e87509d`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	15931 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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