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

Static analysis result for SHA-256 cf0de0c3ff0e337e…

MALICIOUS

Office (OLE) / .DOC

87.5 KB
MD5: 843f6c0c24bfc31b6a19471935a092da SHA-1: 7b811d26a4852b9d564c4dab878bd672bbbe7078 SHA-256: cf0de0c3ff0e337e47088e11c0867dda9709eaafa0a1c095c132e9b87722158e
202 Risk Score

Malware Insights

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

The sample contains a VBA macro that is automatically executed upon opening the document. This macro writes a large amount of text to a file named 'boxDelInd.hta' in the 'C:\ProgramData\' directory and then executes it using 'cmd.exe'. This indicates a downloader or dropper functionality, aiming to execute a second-stage payload.

Heuristics 6

  • 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
  • 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.openxmlformats.org/markup-compatibility/2006
    • 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
4282b3b1506d7f2788bd276f06f324011bf4e956f453c449168a370e8ede695a		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 835 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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