Office (OLE) / .DOCX malware analysis — malicious · 70f193ff1df17ecd

MALICIOUS

Office (OLE) / .DOCX

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

MD5: 72ef07c09420c7e45884ae44d1779e97 SHA-1: 6bee62ac1a19280ad986f0d445d0dd2db3026527 SHA-256: 70f193ff1df17ecdd4cda5e1e3712248c6cb690eae5e961b2255f2fe80750c84

242 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The sample contains a VBA macro that is automatically executed upon opening the document, indicated by the Document_Open heuristic. The macro uses CreateObject and GetObject calls, and its p-code indicates auto-execution. While the VBA code is heavily obfuscated, the presence of these indicators strongly suggests it's designed to download and execute a secondary payload. The ClamAV detection further supports its malicious nature.

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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