Office (OLE) / .DOCX malware analysis — malicious · 3d06c902f3360fff

MALICIOUS

Office (OLE) / .DOCX

51.0 KB Created: 2019-07-11 13:57:00 Authoring application: Microsoft Office Word

MD5: 75d7d706c41a6eb2d5a5161a24733999 SHA-1: 45937b97ab316a2712e68665a901e19996352e0d SHA-256: 3d06c902f3360fffb06ee9a80b29c6764fc3e1676ce58a80dc684d3da3aa7f0c

180 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File

The sample contains VBA macros, specifically a Document_Open macro that utilizes GetObject and CallByName functions, indicating an attempt to execute code upon opening. The embedded URL, though benign, suggests a potential delivery vector. The primary attack pattern involves leveraging these macros to likely download and execute a secondary payload, as indicated by the heuristic firings.

Heuristics 6

Document_Open macro high OLE_VBA_DOCOPEN

Document_Open macro
GetObject call high OLE_VBA_GETOBJ

GetObject call
CallByName call high OLE_VBA_CALLBYNAME

CallByName 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` `669f54bb51ae647867d8467f890288e3188d0bef1e387afdb23ad9feb1e76483`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	1649 bytes

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