Office (OLE) / .DOCX malware analysis — malicious · 6d7d20fe6b6c7b58

MALICIOUS

Office (OLE) / .DOCX

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

MD5: 190cfc96ef531eabbdce600e01587a68 SHA-1: 15483d47697b5166a8f18942c0ab096aeb937487 SHA-256: 6d7d20fe6b6c7b58b91aa59c5723b2544a74fd5abba0909454fe13ce0633c8c9

242 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The sample contains VBA macros, specifically a Document_Open macro, which is a common technique for executing malicious code upon opening the document. The heuristics indicate the use of CreateObject and GetObject, suggesting the macro attempts to interact with the system or download external content. The ClamAV detection further confirms its malicious nature. The VBA code is heavily obfuscated, making it difficult to determine the exact payload, but the overall pattern points to a macro-based downloader.

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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