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

Static analysis result for SHA-256 4722a4d6ff371f1f…

MALICIOUS

Office (OLE) / .PPT

55.5 KB Created: 2023-02-28 19:45:11 Authoring application: Microsoft Office PowerPoint
MD5: e29a9db868632a7883c91b1054ca7bfd SHA-1: 08a640948af04fe1c0e8abf4f04b897450f9825e SHA-256: 4722a4d6ff371f1f3f3c6731e6d1cd19cf12f2f78fb9663e6ceb93c4925f4011
420 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1059.003 Windows Command Shell T1204.002 Malicious File T1105 Ingress Tool Transfer

The sample contains a critical Auto_Open VBA macro that utilizes WScript.Shell and cmd.exe to execute commands. This script is designed to download and execute a secondary payload from the embedded URL http://191.101.2.39/installazione.exe. The presence of these elements strongly indicates a malicious intent to compromise the user's system.

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
  • Auto_Open macro high OLE_VBA_AUTO
    Auto_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • cmd.exe reference in VBA high OLE_VBA_CMD
    cmd.exe reference in VBA
  • 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.
  • Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND
    Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
  • 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://191.101.2.39/installazione.exe

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
7688026f2bda6e06e82b4f80d532cd95fc952e5a784958dca6c7d25cca081cfb		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 239 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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