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

Static analysis result for SHA-256 4f0d613797aa59fb…

MALICIOUS

Office (OLE) / .PPT

71.5 KB Created: 2021-02-27 07:31:42 Authoring application: Microsoft Office PowerPoint
MD5: 23d32b5017e9a8a9bed86613cf31e692 SHA-1: 123d40bd3867d41ce42f13112bafbf3f728f75ad SHA-256: 4f0d613797aa59fbcb957162c37d586e020cfb65a886972b404bbda4473d0b5e
160 Risk Score

Malware Insights

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

The sample is a PowerPoint file containing VBA macros, specifically an Auto_Close macro. The critical heuristic firing indicates a Shell() call within the VBA code, which is used to execute arbitrary commands. The presence of VBA macros and the use of Shell() strongly suggest a malicious intent to download and execute a secondary payload. No specific family could be identified, but the execution method is clear.

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
81c48c2ad384c361289f895b4cba7410dd2416d84b91dfa1a0adc06f6af3f1e1		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 3716 bytes

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