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

Static analysis result for SHA-256 f1fe26816be3e7ee…

MALICIOUS

Office (OLE) / .DOC

96.5 KB First seen: 2022-05-11
MD5: a3d7cc8612872109fe2c53a34437fe09 SHA-1: 2a752ea3cdf8c604a55be4691c4afb00e962bd8d SHA-256: f1fe26816be3e7ee0363439747bf0e9f82ed9aa7badd1fb49a8145937a5bb33e
142 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell

The sample is a malicious DOC file containing a VBA macro. The Auto_Open macro is present and uses GetObject, indicating an attempt to execute code. The VBA script is heavily obfuscated, making it difficult to determine the exact payload, but it appears to be designed to download and execute a second-stage payload. The obfuscation and execution attempt suggest a downloader or droppper functionality.

Heuristics 5

  • Auto_Open macro high OLE_VBA_AUTO
    Auto_Open macro
  • 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.
  • 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 https://taxfile.mediafire.com/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
ea694de6e6fc8bd659361b3f044fff9ed66b0c9db4a9131eaf2221c593b09807		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 49742 bytes

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