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

Static analysis result for SHA-256 1e362a998af0a7d2…

MALICIOUS

Office (OLE) / .PPT

57.0 KB Created: 2023-07-25 21:21:30 Authoring application: Microsoft Office PowerPoint
MD5: b742180f3ed7c1df9132bcdb8d08bc5d SHA-1: ba737c299db718eecab581e826602edc2d3e52ca SHA-256: 1e362a998af0a7d2691bc2a37b11619eb501c142389c571181ba12f99874576b
400 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.003 Windows Command Shell T1204.002 Malicious File T1105 Ingress Tool Transfer

The sample contains VBA macros, including an Auto_Close macro, that utilize WScript.Shell and cmd.exe to execute commands. The critical OLE_VBA_SHELL and OLE_VBA_WSCRIPT firings indicate the script attempts to run external commands. The presence of a URL pointing to a VBS file suggests the macro's purpose is to download and execute a second-stage payload. The Auto_Close macro is designed to execute automatically when the presentation is closed.

Heuristics 11

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • WScript.Shell usage critical OLE_VBA_WSCRIPT
    WScript.Shell usage
  • Reference to Windows Script Host high SC_STR_WSCRIPT
    Reference to Windows Script Host
  • Auto_Close macro high OLE_VBA_AUTOCLOSE
    Auto_Close macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • cmd.exe reference in VBA high OLE_VBA_CMD
    cmd.exe reference in VBA
  • 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.
  • Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND
    Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
  • VBA macros detected medium OLE_VBA_MACROS
    Document contains VBA macro code
  • Suspicious extracted artifact medium 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.
  • 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 https://bitbucket.org/!api/2.0/snippets/mounmeinlylo/Mze45j/64d6e14bfb3aebcaca46cf8b2e37bc92bce97c81/files/methew222filesys.vbs

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
02445ce5e897d7e7cb2d43191f765f5be70915bddfda7fcee938c11cdf6e8c00		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 791 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 2 shell/COM execution token(s).

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