Office (OLE) / .DOCX malware analysis — malicious · 6bbaf7a876ba2716

MALICIOUS

Office (OLE) / .DOCX

81.5 KB Created: 2022-01-17 11:29:00 Authoring application: Microsoft Office Word

MD5: ae5e1a87fc562c85d4334cb012aadde1 SHA-1: 7179edf22cf7f39a0f8e1999a05f14cf348728dd SHA-256: 6bbaf7a876ba2716ad8c17d6ef7b81579c565f4f44939f7a3f5c46b19ff32e28

182 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1204.002 Malicious File

The sample contains a VBA macro with a Document_Open subroutine that is triggered automatically. This macro uses CreateObject to save the document's content to a new file named 'computerCenterI7.h' and then attempts to execute it. The obfuscated document body suggests an attempt to hide malicious content.

Heuristics 6

Reference to Windows Script Host high SC_STR_WSCRIPT

Reference to Windows Script Host
Document_Open macro high OLE_VBA_DOCOPEN

Document_Open macro
CreateObject call high OLE_VBA_CREATEOBJ

CreateObject 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` `6b2f7923b4896784332d8251307bf4cfea98922a387334df81ac9cadf1e95c90`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	1149 bytes

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