Office (OLE) / .DOCX malware analysis — malicious · 3139013c53da9f4c

MALICIOUS

Office (OLE) / .DOCX

171.5 KB Created: 2021-01-05 12:07:00 Authoring application: Microsoft Office Word

MD5: 220e45a878c802fa076b88892f054833 SHA-1: 65c0aeb226df7ba46687156ed22c071dee8b34fb SHA-256: 3139013c53da9f4c7c2fed417c91a6c3575034b75234dba4d13e5a9c0a5cead8

240 Risk Score

Malware Insights

MITRE ATT&CK

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

The critical ClamAV detection and high-severity heuristics for VBA macros, including auto-execution and CreateObject calls, strongly indicate malicious intent. The presence of a Document_Open macro suggests an attempt to immediately execute malicious code upon opening the document. The embedded URL, though benign in reputation, is noted as part of the document's structure. The VBA p-code auto-execution with execution tokens points to a downloader functionality.

Heuristics 7

ClamAV: Doc.Downloader.EmotetRed02224-9938637-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.EmotetRed02224-9938637-0
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` `5fd199a84582bf2c4248191e49df05fe3a9d17ab4a6f639ead9a581ea6be129f`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	10799 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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