Office (OOXML) / .OLE malware analysis — malicious · 67794894846550f2

MALICIOUS

Office (OOXML) / .OLE

115.3 KB Created: 2020-07-14 10:26:00 UTC Authoring application: Microsoft Office Word 16.0000

MD5: ac9e78ce884c3abc83859f910e9b4860 SHA-1: 9d8d3aac40ebaaaad975546bae7e07079fc8daeb SHA-256: 67794894846550f29040574d2d2aeb8002225c17bbd47090c6d221022e9cb368

222 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1204.002 Malicious File T1071.001 Web Protocols

The sample contains VBA macros, specifically an AutoOpen macro, which is a common technique for executing malicious code upon opening a document. The script utilizes the URLDownloadToFile function to download a file named 'C8.tmp' from the URL 'http://m33xa3.com/hboneb/sol95.php?l=puom6.cab'. This indicates the document is a downloader for a second-stage payload.

Heuristics 6

URLDownloadToFile in VBA critical OLE_VBA_DOWNLOAD

URLDownloadToFile in VBA
ClamAV: Doc.Downloader.GreenBox5-9139204-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.GreenBox5-9139204-0
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://m33xa3.com/hboneb/sol95.php?l=puom6.cab
- 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` `6fac28990f6ce63bef9fce6bfa2e23b65585049e0a6d87d1bccc9db234088276`	vba-macro	oletools.olevba.extract_macros (decoded VBA source from OOXML)	3181 bytes
`vbaProject_00.bin` `1278d3f8e202f08ce59d15a370cc4d0427d2bc87b3830706f2ebf64b38a4b484`	vba-project	OOXML VBA project: word/vbaProject.bin	25600 bytes

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