Emotet Office (OLE) / .DOCX malware analysis — malicious · c75ff84fe40e2bd5

MALICIOUS

Office (OLE) / .DOCX

176.3 KB Created: 2020-10-20 22:39:00 Authoring application: Microsoft Office Word

MD5: 7f89dc7d25a1dc693c6b79d3c8d990ed SHA-1: 86abafe70cfc18a4dbdeacfb0f85521254dd56e4 SHA-256: c75ff84fe40e2bd56dd64dd2a51d43de4ae2eac42c9efb6df985ff4244f7f974

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

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

The file is identified as malicious by ClamAV with the signature Doc.Malware.Emotet-9781039-0. Static analysis reveals the presence of VBA macros, specifically a Document_Open macro that utilizes CreateObject, indicating an auto-execution mechanism. This combination strongly suggests Emotet, a known banking trojan and downloader. The macro is designed to execute arbitrary code, likely to download and run a secondary payload.

Heuristics 7

ClamAV: Doc.Malware.Emotet-9781039-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Emotet-9781039-0
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` `130bc91dd8b5ad391a87daabf287b6e2ceed1d78136a29ff57bedf25aa736586`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	18991 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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