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

Static analysis result for SHA-256 9ebf46e686e5bfda…

MALICIOUS

Office (OLE) / .XLS

10.5 KB
MD5: 6a24f3afce3b29ed0e2e53f82ec320ff SHA-1: fb5dba03fe57394e3f77db9e9e2dc5c546c14ea2 SHA-256: 9ebf46e686e5bfdae99d543c58eb045970d5fe8c11b3655c49d490e5a1bc6de1
388 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious File T1059.003 Windows Command and Shell

The sample is an XLS file containing a Workbook_Open VBA macro. This macro utilizes WScript.Shell to execute a batch file downloaded from the embedded URL 'https://bdnews25.com/wp-includes/assets/document0312.bat'. The presence of Shell() calls and WScript.Shell usage strongly indicates a downloader or initial execution stage.

Heuristics 11

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • WScript.Shell usage critical OLE_VBA_WSCRIPT
    WScript.Shell usage
  • Reference to Windows Script Host high SC_STR_WSCRIPT
    Reference to Windows Script Host
  • Workbook_Open macro high OLE_VBA_WBOPEN
    Workbook_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • GetObject call high OLE_VBA_GETOBJ
    GetObject call
  • 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 https://bdnews25.com/wp-includes/assets/document0312.bat

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
d0c7d11ba82f9da60325667a806152012726e0c075d8910ddccd54cfcbab1f16		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 1882 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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