Office (OLE) / .DOCX malware analysis — malicious · 718113e004b811df

MALICIOUS

Office (OLE) / .DOCX

216.4 KB Created: 2020-09-21 20:39:00 Authoring application: Microsoft Office Word

MD5: fc46186a91fac55ec43d9ab0b78800fe SHA-1: 988f761e6558831af72e26094438896b15b443ac SHA-256: 718113e004b811df9d311a7edec1092b2aab2d9173d762022544a74b5ba02657

242 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The sample is a Microsoft Office document containing VBA macros, specifically a Document_Open macro that uses CreateObject and GetObject calls. This indicates an attempt to execute malicious code automatically when the document is opened. The ClamAV detection as 'Doc.Downloader.Generic' further supports the conclusion that this file is designed to download and execute additional malware. No specific family could be identified.

Heuristics 7

ClamAV: Doc.Downloader.Generic-9764666-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Generic-9764666-0
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` `6d2f50f334b8e082813c694e310720d341c184a4af51360bc43b61318b8ab2c5`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	19051 bytes

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