Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 a1068e9d45ceb3c3…

MALICIOUS

Office (OOXML)

38.0 KB Created: 2021-07-13 16:56:00 UTC Authoring application: Microsoft Office Word 16.0000
MD5: 72d32604341f874b001a916fcffd1b0a SHA-1: cca1f260388a41b348e0e5dd3d8b34e9894d1631 SHA-256: a1068e9d45ceb3c357ea46b59f8cc0dbbd67e407d6ab6d1049d31e50d592c5cc
210 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.003 Windows Command Shell T1204.002 Malicious File

The sample is an OOXML document containing VBA macros, specifically a Document_Open macro. This macro calls the Shell() function to execute 'cmd.exe /c calc.exe'. This indicates an attempt to run an external command, likely as a precursor to a more malicious action. The presence of the Document_Open macro and the use of Shell() are strong indicators of malicious intent.

Heuristics 7

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • cmd.exe reference in VBA high OLE_VBA_CMD
    cmd.exe reference in VBA
  • 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
  • External hyperlinks (1) low OOXML_EXTERNAL_HYPERLINKS
    Document contains 1 external hyperlink — clickable URLs are stored as external relationships. First target: https://www.prnewswire.com/news-releases/hacknowledge-a-leading-provider-of-a-cybersecurity-monitoring-solution-launches-north-american-subsidiary-300508303.htm
  • 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
    • https://www.prnewswire.com/news-releases/hacknowledge-a-leading-provider-of-a-cybersecurity-monitoring-solution-launches-north-american-subsidiary-300508303.htm
    • https://www.prnewswire.com/news-releases/hacknowledge-a-leading-provider-of-a-cybersecurity-monitoring-solution-launches-north-american-subsidiary-300508303.html

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
114814eda0e3d20d1da3d8f58207065aea00a8e4265a701b12dc1ca09f007991		 vba-macro oletools.olevba.extract_macros (decoded VBA source from OOXML) 599 bytes
vbaProject_00.bin
2f33769f8988381b927f243889daa5e67313f621762e25b4dc014f1ffb9656b7		 vba-project OOXML VBA project: word/vbaProject.bin 10240 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.