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

Static analysis result for SHA-256 8d3f0b8352954434…

MALICIOUS

Office (OLE) / .PPT

57.5 KB Created: 2020-04-10 11:53:39 Authoring application: Microsoft Office PowerPoint
MD5: 14dd15a8d75ab7b3a5894d71eaf1a611 SHA-1: 131c9bb9b2593ab8942a96fd9d06233dbbd2cbca SHA-256: 8d3f0b8352954434b4b49688bba6850363dc845f5f22337fddc0721fedcdfcee
240 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File

The sample is a PowerPoint file containing VBA macros, with a critical heuristic firing for Shell() calls. The presence of Auto_Open and Auto_Close macros, along with VBA p-code auto-execution, indicates that the macros are designed to run automatically upon opening the presentation. The Shell() function call strongly suggests the execution of arbitrary commands, likely for downloading and executing a secondary payload. No specific family could be identified.

Heuristics 6

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • Auto_Open macro high OLE_VBA_AUTO
    Auto_Open macro
  • 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.
  • Suspicious extracted artifact high EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • 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
9cd0169e521af1f05b472fe2891d94d6f8ff08926d1cc25a8f6c8ffa2df0744b		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 203 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.

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