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

Static analysis result for SHA-256 461d75b94ef071d3…

MALICIOUS

Office (OLE) / .PPT

67.5 KB Created: 2021-10-04 21:10:47 Authoring application: Microsoft Office PowerPoint
MD5: 5b4b985c02058f62614678c24d6be52e SHA-1: c113bfa5c7312dbba20bd85a9c584a04de040853 SHA-256: 461d75b94ef071d3b413d7cc35732b2ed93b76a7bdf9f4577eaba89ecadb3429
140 Risk Score

Malware Insights

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

The sample is a PowerPoint file containing a malicious VBA macro. The Auto_Close macro is triggered upon closing the presentation and uses GetObject to execute a second-stage payload. The script reconstructs the URL "https://bitly.com/om/qyudoialjbnsdjkahsdkjahsbad" from concatenated strings and attempts to download and execute content from it. This indicates a downloader functionality.

Heuristics 4

  • Auto_Close macro high OLE_VBA_AUTOCLOSE
    Auto_Close macro
  • GetObject call high OLE_VBA_GETOBJ
    GetObject call
  • 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
73b5106d8e4098641c9985c6d69060f57fa4b7f30e3efd7b201c471749fcb120		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 1250 bytes

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