Emotet Office (OLE) / .DOCX malware analysis — malicious · f3da40dbd56476fa

MALICIOUS

Office (OLE) / .DOCX

145.6 KB Created: 2020-09-30 13:54:00 Authoring application: Microsoft Office Word

MD5: 49b408872cfc380817893b3714cb995c SHA-1: 5c1c607ea40d44b18113aaefbd6bc8901f918580 SHA-256: f3da40dbd56476fa017cac081cde5ffeb1cf847d21c3778753fb3513125bd914

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

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

The sample was detected as malicious by ClamAV with a specific Emotet signature. Heuristics indicate the presence of VBA macros, specifically a Document_Open auto-execution macro that uses CreateObject, a common technique for Emotet. The extracted document body text is heavily obfuscated and does not provide clear user-facing content, but the presence of the Document_Open macro strongly suggests an attempt to execute malicious code upon opening the document. No scripts were explicitly carved, but the VBA macro firings are sufficient to infer malicious intent.

Heuristics 7

ClamAV: Doc.Malware.Emotet-9769801-1 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Emotet-9769801-1
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` `b0a96d5f70fa37f74dd6926b04c01f24a02f2a82bef41b3183b9207cf3a20fca`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	10253 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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