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

Static analysis result for SHA-256 76bd0a3a2c3c5334…

MALICIOUS

Office (OLE) / .PPT

92.5 KB Created: 2022-12-06 12:26:16 Authoring application: Microsoft Office PowerPoint
MD5: 12453a3aa2ca59549a08b05ffbb0acc2 SHA-1: 65c460cadeb03d888c62ce32faa4d695feb613ac SHA-256: 76bd0a3a2c3c533461bcdf7867af296276a9c02c6308a8cf1042d951296269f4
302 Risk Score

Malware Insights

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

The sample contains VBA macros that leverage `WScript.Shell` and `CreateObject` to execute commands. Specifically, the `Auto_Close` macro calls a function that concatenates strings to form a command to download and execute content from the URL `https://bitbucket.org/!api/2.0/snippets/newwork123social/REKMzj/a8d5f1dc340d41367b523aded8f0b676177bc7d9/files/blackstart.txt`. This indicates a downloader functionality.

Heuristics 8

  • 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
  • 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
  • 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/newwork123social/REKMzj/a8d5f1dc340d41367b523aded8f0b676177bc7d9/files/blackstart.txt

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
6d858c7565940cd641d13568f59e39658d159b2d54bc751f3c5d433da03ab9c4		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 1387 bytes

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