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

Static analysis result for SHA-256 9aaa7ad658d085c7…

MALICIOUS

Office (OLE) / .DOC

75.0 KB
MD5: 9423a8abfbc17567619d2ea214bcf1e9 SHA-1: 0d70ec77fbda7c52d59748e45cc9ac4633e9920f SHA-256: 9aaa7ad658d085c79bbca64f44df44955cec85261d8e287815ea6cdc85a8e619
202 Risk Score

Malware Insights

MITRE ATT&CK
T1059.003 Windows Command Shell T1566.001 Spearphishing Attachment T1059.005 Visual Basic

The sample contains a VBA macro that executes upon opening the document. This macro utilizes cmd.exe to write a file to 'c:\programdata\index.hTA' and then executes it. The VBA code reconstructs the command line as 'cmd.exe /s /c c:\programdata\index.hTA' and the filename as 'c:\programdata\index.hTA'. This indicates a downloader or dropper functionality.

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.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
7c6d893fce082aefdba7e2696d7260c3f069a7272288072fa576ea980f6776a2		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 1200 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 shell/COM execution token(s). Carved macro source contains an auto-exec entry point and execution/download terms.

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