Office (OLE) / .DOCX malware analysis — malicious · 650b390c56eed72a

MALICIOUS

Office (OLE) / .DOCX

154.3 KB Created: 2020-09-22 12:58:00 Authoring application: Microsoft Office Word

MD5: aa5a4abe7ab4f4ef479a2f189abcc21f SHA-1: 5b69ae9102b30277674ead922734680fc4999917 SHA-256: 650b390c56eed72a6309b925bb07185de472eb81ef4bb982bcfa8aae5a2b93db

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 macro uses CreateObject and GetObject calls, typical for downloading and executing payloads. While the specific URL or payload is obfuscated within the script, the presence of these indicators and the ClamAV detection strongly suggest a macro-based downloader.

Heuristics 7

ClamAV: Doc.Malware.Ewtz-9765445-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Ewtz-9765445-0
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` `3534612e311adddbcf2e093d61bfa43aa100b688e0fa70d64062312eb6cd9cc9`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	17155 bytes

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