Office (OLE) / .DOCX malware analysis — malicious · 104d2e1471c7993b

MALICIOUS

Office (OLE) / .DOCX

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

MD5: 9a9b0fd0a7dd2ed2fdb3d4d993c675b9 SHA-1: 2bdcea462df6b7a7c6e0b92412774c41c2598412 SHA-256: 104d2e1471c7993b4d02e8043079b61edd68a9c7744f66779b40d798cc1f8da1

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 common technique for malware delivery. The VBA code is heavily obfuscated, making it difficult to determine the exact payload, but the presence of CreateObject and GetObject calls suggests dynamic code execution or object manipulation. The ClamAV detection further confirms its malicious nature. The primary attack vector is likely spearphishing attachment.

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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