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

Static analysis result for SHA-256 d9937e8d07674b16…

MALICIOUS

Office (OLE) / .XLA

513.5 KB Created: 2002-10-21 04:08:32 Authoring application: Microsoft Excel
MD5: e2117b002952867bbf6290eb4e1d416b SHA-1: 97697193f76596eb644c1144650f23079223d537 SHA-256: d9937e8d07674b16a8276a92695ef6057bfd4704a7c477285d467919287cea4f
208 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File

The file is an Excel macro-enabled add-in (XLA) containing a Workbook_Open macro. This macro is configured to execute a shell command, which is a common technique for downloading and executing additional malicious payloads. The presence of embedded URLs suggests these are potential download sources. The macro's auto-execution and shell call are strong indicators of malicious intent.

Heuristics 7

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • Workbook_Open macro high OLE_VBA_WBOPEN
    Workbook_Open 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.
  • 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
  • Environ() call (env variable access) low OLE_VBA_ENVIRON
    Environ() call (env variable access)
  • 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://www.bandwood.com/ppt_versioncheck.htm
    • http://www.bandwood.com/versioncheck_ppt.htm�
    • http://www.bandwood.com/support.htm

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
ac62d265fbdbfa9a2b3d321c1ccec6c76df682383be1c5707f96488dbd0c4636		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 130746 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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