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

Static analysis result for SHA-256 bcdab8823e899fac…

MALICIOUS

Office (OLE) / .PPT

84.0 KB Created: 2022-01-31 19:05:41 Authoring application: Microsoft Office PowerPoint
MD5: b8d86b6213a0796ec7c58bb46d9d79e0 SHA-1: f9b4c81947ec24a4a3ebd9aa88dc7459ff9a3fec SHA-256: bcdab8823e899fac00cfed5705b1cd092e68e6b0db62c55702eec613c8a087e8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell

The file is a PowerPoint presentation containing VBA macros. The Auto_Close macro triggers the Uganda function, which concatenates strings from various form controls to construct a command. This command is then executed using the Shell() function. The specific command string is not fully reconstructible due to obfuscation and reliance on form control values, but the intent is to execute an arbitrary command. This is a common technique for downloading and executing additional payloads.

Heuristics 4

  • 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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
eb3d4f986632f191c682f5cb0d77a6b52676b4e70ee1cdd84c9e160a79c4d5a7		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 2140 bytes

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