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

Static analysis result for SHA-256 8811a7bfc8b36649…

MALICIOUS

Office (OLE) / .PPT

62.0 KB Created: 2021-10-18 02:57:03 Authoring application: Microsoft Office PowerPoint
MD5: 87b2f6337fbea5ee3f10eb1b210dd795 SHA-1: 200a86d5e4527e072ffe7a2059b762253289ae69 SHA-256: 8811a7bfc8b36649308ae32e37c3cfcd0e1bf700f34988bb9c7028a7d367d894
262 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1218.005 System Binary Proxy Execution: Mshta

The Auto_Open VBA macro within the PowerPoint file utilizes CreateObject to instantiate a Shell.Application object. This object is then used to call ShellExecute, which in turn invokes mshta.exe with a provided URL. This indicates the macro's purpose is to download and execute a second-stage payload from the embedded URL. The presence of SC_STR_SHELLEXEC and SC_STR_MSHTA heuristics further supports this attack pattern.

Heuristics 8

  • Reference to ShellExecute API high SC_STR_SHELLEXEC
    Reference to ShellExecute API
  • Reference to mshta.exe high SC_STR_MSHTA
    Reference to mshta.exe
  • Auto_Open macro high OLE_VBA_AUTO
    Auto_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject 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
  • 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://www.bitly.com/ajdwwrufqwehjwijjd�
    • https://www.bitly.com/ajdwwrufqwehjwijjd

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
33be3a402a7c514c571c0d4242c335e8144b7126ca423ed34da3c81265b71042		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 576 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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