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

Static analysis result for SHA-256 4b550c500aae1686…

MALICIOUS

Office (OLE) / .PPT

211.5 KB Created: 2021-07-06 22:31:40 Authoring application: Microsoft Office PowerPoint
MD5: 55795b3fdea01aa40bc69887d36e22f9 SHA-1: 7988c9c721a2b2d0fe8999f6bb6abc676988d43c SHA-256: 4b550c500aae1686f38edfc7e28fe3a7939b997e01ee73a432c0caa7ea69892b
140 Risk Score

Malware Insights

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

The file is a PowerPoint presentation containing a malicious VBA macro. The macro is triggered by the Auto_Open event and uses a GetObject call to execute code. The script appears to be designed to download and run a second-stage payload, indicated by the `bora.myvalue.Run madar` call, where `madar` is constructed from strings obtained via `bora.getEnumName`. The exact nature of the payload is not discernible due to obfuscation and truncation, but the overall intent is clear.

Heuristics 4

  • Auto_Open macro high OLE_VBA_AUTO
    Auto_Open 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
157c081e68a5f897077f4d701de6b3edda9d2761aa02c5b8163a32f467cf79a2		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 49047 bytes

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