Office (OLE) / .DOCX malware analysis — malicious · 074042495b97a2e7

MALICIOUS

Office (OLE) / .DOCX

214.7 KB Created: 2020-09-21 07:35:00 Authoring application: Microsoft Office Word

MD5: 137edee9f372f3012c5f867ed6419f36 SHA-1: 8f721c397caf22ee7b1ff69932b817d7ec8e1571 SHA-256: 074042495b97a2e7cd7a37b3146f0447d96c51519caa6130928924bd4a141c10

242 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The sample is a malicious Office document containing VBA macros, specifically a Document_Open macro designed to execute automatically. Heuristics indicate the use of CreateObject and GetObject, common for downloading and executing payloads. The ClamAV detection 'Doc.Downloader.Generic-9764473-0' further supports this. The VBA script itself is heavily obfuscated but its structure and the presence of the Document_Open auto-execution macro strongly suggest it's a downloader.

Heuristics 7

ClamAV: Doc.Downloader.Generic-9764473-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Generic-9764473-0
Document_Open macro high OLE_VBA_DOCOPEN

Document_Open macro
CreateObject call high OLE_VBA_CREATEOBJ

CreateObject call
GetObject call high OLE_VBA_GETOBJ

GetObject 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.
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` `a72546be4835befa0cd5934bb3d180228dbaffbae6f31f70f11c03f05171f092`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	19249 bytes

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