Emotet Office (OLE) / .DOCX malware analysis — malicious · fa457b662c69a26d

MALICIOUS

Office (OLE) / .DOCX

148.8 KB Created: 2020-09-28 14:26:00 Authoring application: Microsoft Office Word

MD5: feca76aefe08fad24003debf7259e770 SHA-1: 4158c048b80ef6506ce37e15f882396e1d2b87f1 SHA-256: fa457b662c69a26dc04e4e4253971693003c4586f3d6abb56a15f547f0531f55

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1059.001 PowerShell T1566.001 Spearphishing Attachment

The file contains VBA macros, specifically a Document_Open macro that is auto-executed. This macro uses CreateObject, indicating it's designed to perform actions beyond simple document manipulation. The ClamAV detection and heuristic firings strongly suggest Emotet, a known macro-based malware. The presence of the 'macros.bas' artifact further supports this. The macro's likely intent is to download and execute a second-stage payload.

Heuristics 7

ClamAV: Doc.Malware.Emotet-9768663-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Emotet-9768663-0
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` `52573b116f951816e527b23fd5cfdfc578caca117ddeb459f950d0953f709442`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	6643 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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