Office (OLE) / .DOC malware analysis — malicious · dd71f46f9effed33

MALICIOUS

Office (OLE) / .DOC

161.3 KB Created: 2020-09-23 21:50:00 Authoring application: Microsoft Office Word

MD5: 05ac36575a60abcb541f99ea92912854 SHA-1: 2608d96b661c9963ba67cadd2d5c1ddb6753168f SHA-256: dd71f46f9effed338d5abf88b9b02d44434366d833bb55051cdec45c5b090916

240 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1204.002 Malicious File

The file contains VBA macros, specifically a Document_Open macro that utilizes CreateObject, indicating an attempt to execute code upon opening. The ClamAV detection 'Doc.Downloader.Mryv-9765643-0' strongly suggests this is a downloader. The embedded URL, though benign according to reputation, is part of the document's structure and was flagged. The document body content is unreadable and likely obfuscated or irrelevant to the malicious functionality.

Heuristics 7

ClamAV: Doc.Downloader.Mryv-9765643-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Mryv-9765643-0
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` `73025ddea320f2b071eb07bf918853ac1d6bc1ed1503c9c9400830c79e2af1db`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	19787 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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