Office (OLE) / .DOCX malware analysis — malicious · 863c4548ed10a641

MALICIOUS

Office (OLE) / .DOCX

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

MD5: 7593604f1d42c035ee1083b0649f0d32 SHA-1: 759f1e08a6f3b6a8bb398bd7056b83928242ab90 SHA-256: 863c4548ed10a6412c7114ed7032ad3c3520c6546336adf8e93f9cd595ad97fe

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-exec macro, which is a strong indicator of malicious intent. The heuristics indicate the use of CreateObject and GetObject, common for executing shellcode or downloading additional payloads. The ClamAV detection further confirms its malicious nature. The VBA code appears to be obfuscated, making it difficult to determine the exact download URL or payload.

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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