Emotet Office (OLE) / .DOCX malware analysis — malicious · 413e563b2050a7d5

MALICIOUS

Office (OLE) / .DOCX

178.5 KB Created: 2020-10-26 12:50:00 Authoring application: Microsoft Office Word

MD5: c5526b4470bdebbd97fbee956cd349de SHA-1: 3a23e46a969e8e2392ad3609bbd05bf6d56bedea SHA-256: 413e563b2050a7d58b673a726724cf85875316f6d36c526fbc5cd491aff7badb

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

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

The sample 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, indicating an auto-execution attempt. The presence of the macros.bas file further supports this. The obfuscated document body text, while unreadable, is consistent with lures used by Emotet. The primary function appears to be downloading and executing a secondary payload.

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` `f1dc9112e8c9da061a4c5323ee9b2ea6b91271f7826b740d7f08af4c09fa4698`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	15863 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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