Malicious Office (OLE) / .DOC — malware analysis report

Static analysis result for SHA-256 8f8a7b318f077598…

MALICIOUS

Office (OLE) / .DOC

71.8 KB
MD5: 3ea53610a5bd86400ebdc5faeb470a7d SHA-1: 1f598617c794d3738d77a04b44e772c51476363e SHA-256: 8f8a7b318f077598e9a1727e4135c001a98f4605f5d464eeeff480873e9194b7
162 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.003 Windows Command Shell

The sample contains VBA macros, specifically a Document_Open macro that triggers the execution of a command. The script reconstructs the command to be 'cmd /s /k .ha', which is then executed using VBA's Shell() function. This indicates the document is designed to download and execute a second-stage payload, likely by writing content to a file named '.ha' and then executing it via the command shell.

Heuristics 5

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • Suspicious extracted artifact high EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • 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.microsoft.com/aml/2001/core
    • 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.microsoft.com/office/word/2003/wordml
    • http://schemas.microsoft.com/office/word/2003/auxHint
    • http://schemas.microsoft.com/office/word/2006/wordml
    • http://schemas.microsoft.com/office/word/2003/wordml/sp2
    • http://schemas.microsoft.com/schemaLibrary/2003/core

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
9cb259b623bb6752374a47c7877c3ee81e87a8ef36b7711435bd2de5c2aa94a1		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 1215 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.

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