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

Static analysis result for SHA-256 dd624fff8650b855…

MALICIOUS

Office (OLE) / .PPT

63.0 KB Created: 2021-09-19 14:04:02 Authoring application: Microsoft Office PowerPoint
MD5: 6e502c4a53328898c622628839ea924f SHA-1: e04353409d315933457fe00bf8107a3d88c829ba SHA-256: dd624fff8650b855cd91b38e2693be05ed0155281309dd9373c308547eddc5ff
262 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.003 Windows Command Shell T1204.002 Malicious File

The sample is a PowerPoint file containing a VBA macro with an Auto_Open subroutine. This macro utilizes CreateObject to instantiate Shell.Application and then calls ShellExecute, indicating an attempt to execute arbitrary code. The presence of the Auto_Open macro and the ShellExecute API call strongly suggest a malicious intent to download and run a secondary payload. No specific family could be identified.

Heuristics 8

  • Reference to ShellExecute API high SC_STR_SHELLEXEC
    Reference to ShellExecute API
  • Reference to mshta.exe high SC_STR_MSHTA
    Reference to mshta.exe
  • Auto_Open macro high OLE_VBA_AUTO
    Auto_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject 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.
  • 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
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://www.bitly.com/jkdlasjdklasjajk

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
490da49cd5e3a651e97f34dab8684042342e25e3313da583abb38c3d72b874cd		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 927 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 shell/COM execution token(s). Carved macro source contains an auto-exec entry point and execution/download terms.

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