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

Static analysis result for SHA-256 bc3218e85f85c5a0…

MALICIOUS

Office (OLE) / .PPT

81.0 KB Created: 2021-03-14 23:15:17 Authoring application: Microsoft Office PowerPoint
MD5: 3b60489dbd93f49f779bfbdf9bfed71c SHA-1: 81aff683eee516ebeb38b6e7e9887487b75771d0 SHA-256: bc3218e85f85c5a05295aaf07f910976f264f3622d11c06d085ce6bbed296a57
240 Risk Score

Malware Insights

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

The sample is a PowerPoint file containing VBA macros. A critical heuristic firing indicates the use of Shell() within the VBA code, and high-severity heuristics point to references to mshta.exe and general LOLBin command execution. The Auto_Close macro is present, suggesting execution upon closing the document. The script likely leverages mshta.exe to download and execute a secondary payload, although the specific URL is not directly extractable from the provided evidence. The document body content is structural and does not provide direct clues to the lure.

Heuristics 7

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • Reference to mshta.exe high SC_STR_MSHTA
    Reference to mshta.exe
  • Auto_Close macro high OLE_VBA_AUTOCLOSE
    Auto_Close macro
  • 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
  • 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://%6786d78asd6786d78asd%6786d78asd%6786d78asd@j.mp/ddwwdddwdedkww
    • https://%6786d78asd6786d78asd%6786d78asd%6786d78asd@j.mp/dwddwdwdwddwedkww

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
613e59dbb3648dd218277aec9395e51be30561535daed1d0c2da182a48b5d6a7		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 484 bytes

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