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

Static analysis result for SHA-256 77c88222a44c9c1c…

MALICIOUS

Office (OLE) / .PPT

63.5 KB Created: 2021-03-14 23:15:17 Authoring application: Microsoft Office PowerPoint
MD5: a16012041fbe6c3545acc400fa934f3d SHA-1: d287319ff8781e399489b083ad69152db87b78fb SHA-256: 77c88222a44c9c1c04c1198da8803e2238062f8a4624768e96ff03e9608921e2
242 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1203 Exploitation for Client Execution

The PowerPoint file contains a VBA macro with an Auto_Open subroutine that calls the Shell() function. This function is used to execute mshta.exe with a URL, which is a common technique for downloading and executing further malicious content. The macro's intent is to download and execute a second-stage payload from the embedded URL.

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_Open macro high OLE_VBA_AUTO
    Auto_Open 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.
  • 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 https://%6786d78asd6786d78asd%6786d78asd%6786d78asd@j.mp/jasidwdasdasddasdoj

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
c146bcd26b55139fb7cb88647d5c85a52f8b00285fb03386fda1e1814b78fbf7		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 722 bytes

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