Office (OLE) / .DOCX malware analysis — malicious · 5c4608b3b751fb1c

MALICIOUS

Office (OLE) / .DOCX

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

MD5: 61f30ebe5ffdbcf452dc01bad2baac30 SHA-1: db756f9361a59186ae09b93aeeb1a8d83e9bc223 SHA-256: 5c4608b3b751fb1ca62b60e4ecf738b7363dfdd2c9d252c9cb91a8c12cccd26f

242 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The sample contains a Document_Open VBA macro that utilizes CreateObject and GetObject calls, indicating an attempt to execute arbitrary code. The macro is heavily obfuscated, but the presence of these calls and the ClamAV detection strongly suggest it's designed to download and execute a second-stage payload. The macro's intent is to facilitate the execution of malicious code upon opening the document, consistent with a spearphishing attachment.

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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