Office (OLE) / .DOCX malware analysis — malicious · 133bd4b316ead52e

MALICIOUS

Office (OLE) / .DOCX

160.0 KB Created: 2020-09-22 07:35:00 Authoring application: Microsoft Office Word

MD5: dd5b9b66fe012af8ced20dd1440596a5 SHA-1: 96b674291b17efe612a93a4654ce78b08d66210d SHA-256: 133bd4b316ead52ed9f34a16c1cf897cf69ebf2c69c2bf92b97d1a0a3e7b0515

242 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The sample contains VBA macros, including a Document_Open auto-execution macro, which is a common technique for malware delivery. The VBA code uses CreateObject and GetObject calls, indicating it likely attempts to interact with the system or download additional content. The presence of these indicators, along with a critical ClamAV detection, strongly suggests a malicious document designed to execute a payload upon opening.

Heuristics 7

ClamAV: Doc.Malware.Ewtz-9765424-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Ewtz-9765424-0
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` `a112d95a2b3b8361e272604fc368010c1a607c2cd21f88c20a607d79b8ac6136`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	16742 bytes

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