Office (OOXML) / .OLE malware analysis — malicious · 6a0f95283a40f325

MALICIOUS

Office (OOXML) / .OLE

91.3 KB Created: 2020-10-14 09:02:00 UTC Authoring application: Microsoft Office Word 16.0000

MD5: cdbb2647fd94c25bcbdcf45aba96dcf8 SHA-1: f3fda8083061c8dd13029399d44e19e13a526828 SHA-256: 6a0f95283a40f325c0c2489f8cb6b1781d2ee553c1d44ed86795d61ea967fb47

222 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file is a malicious OOXML document containing VBA macros. The AutoOpen macro triggers a Shell() call, which is a critical finding indicating the execution of arbitrary commands. This suggests the document is designed to download and execute a second-stage payload, consistent with a dropper functionality.

Heuristics 6

Shell() call in VBA critical OLE_VBA_SHELL

Shell() call in VBA
ClamAV: Doc.Dropper.Generic-9823779-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Dropper.Generic-9823779-0
AutoOpen macro high OLE_VBA_AUTOOPEN

AutoOpen macro
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 project inside OOXML medium OOXML_VBA

Document contains a VBA project — VBA macros present
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.microsoft.com/office/word/2010/wordprocessingCanvas
- http://schemas.microsoft.com/office/drawing/2014/chartex
- http://schemas.microsoft.com/office/drawing/2015/9/8/chartex
- http://schemas.microsoft.com/office/drawing/2015/10/21/chartex
- http://schemas.microsoft.com/office/drawing/2016/5/9/chartex
- http://schemas.microsoft.com/office/drawing/2016/5/10/chartex
- http://schemas.microsoft.com/office/drawing/2016/5/11/chartex
- http://schemas.microsoft.com/office/drawing/2016/5/12/chartex
- http://schemas.microsoft.com/office/drawing/2016/5/13/chartex
- http://schemas.microsoft.com/office/drawing/2016/5/14/chartex
- http://schemas.openxmlformats.org/markup-compatibility/2006
- http://schemas.microsoft.com/office/drawing/2016/ink
- http://schemas.microsoft.com/office/drawing/2017/model3d
- http://schemas.openxmlformats.org/officeDocument/2006/relationships
- http://schemas.openxmlformats.org/officeDocument/2006/math
- http://schemas.microsoft.com/office/word/2010/wordprocessingDrawing
- http://schemas.openxmlformats.org/drawingml/2006/wordprocessingDrawing
- http://schemas.openxmlformats.org/wordprocessingml/2006/main
- http://schemas.microsoft.com/office/word/2010/wordml
- http://schemas.microsoft.com/office/word/2012/wordml
- http://schemas.microsoft.com/office/word/2018/wordml/cex
- http://schemas.microsoft.com/office/word/2016/wordml/cid
- http://schemas.microsoft.com/office/word/2018/wordml
- http://schemas.microsoft.com/office/word/2015/wordml/symex
- http://schemas.microsoft.com/office/word/2010/wordprocessingGroup
- http://schemas.microsoft.com/office/word/2010/wordprocessingInk
- http://schemas.microsoft.com/office/word/2006/wordml
- http://schemas.microsoft.com/office/word/2010/wordprocessingShape

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `b3fe4f6f51b40c7a4f8760a545167f6a3eada397277ff1ecd1b062152397f468`	vba-macro	oletools.olevba.extract_macros (decoded VBA source from OOXML)	7724 bytes
`vbaProject_00.bin` `cc9efbe6c3ea6770e920cb1acd678d8724b8b99115bbaf20baafa3d9a8b584ba`	vba-project	OOXML VBA project: word/vbaProject.bin	38400 bytes

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