Office (OLE) / .DOCX malware analysis — malicious · 6c12352efd4f3c01

MALICIOUS

Office (OLE) / .DOCX

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

MD5: 86c5cac1b843493292e11660a0cd2c25 SHA-1: fe1135cc885f02100b363468abdd804fde94c4ba SHA-256: 6c12352efd4f3c01d75a62ff92dc923f367b1a81dcb6b7ccb436c8a27f1f3be2

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 strong indicator of malicious intent. The heuristics indicate the use of CreateObject and GetObject, common for executing arbitrary code. The ClamAV detection ID 'Doc.Malware.Ewtz-9765424-0' further confirms its malicious nature. The VBA script appears to be obfuscated, but its structure suggests it's designed to download and execute a secondary payload.

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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