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

Static analysis result for SHA-256 677786a7ca8f925a…

MALICIOUS

Office (OLE) / .PPT

55.5 KB Created: 2023-02-28 19:45:11 Authoring application: Microsoft Office PowerPoint
MD5: 3109a8f6e751b3b5036f5d4aa70bc3d3 SHA-1: cc5bfd1311b3d52cb54c8b2320579e898a04cf67 SHA-256: 677786a7ca8f925a37187be1f7a1dc245bdb7ef26d4267207fd1dad1429a7181
382 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.003 Windows Command Shell T1204.002 Malicious File T1105 Ingress Tool Transfer

The Auto_Open VBA macro within the PowerPoint file utilizes Wscript.Shell to execute a command. This command downloads a file named 'installazione.exe' from 'http://191.101.2.39/installazione.exe' to the user's APPDATA directory, renames it to 'plus.exe', and then executes it. This indicates a downloader or dropper functionality.

Heuristics 10

  • 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.
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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
ef4be70849e3f5f9de0affd6c268deb04c67a6404a1b85b6e0e260868b8c885c		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 233 bytes

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