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

Static analysis result for SHA-256 0b4ee3311a89e990…

MALICIOUS

Office (OLE) / .PPT

151.0 KB Created: 2021-01-20 23:18:24 Authoring application: Microsoft Office PowerPoint
MD5: 735c2038f7212051a836269ba1d61ee4 SHA-1: 34fae886e80c445caa3663651acf06d5acbf4e76 SHA-256: 0b4ee3311a89e990162047cf967ecaba6968cedd1f03047f2935d2120b09a336
282 Risk Score

Malware Insights

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

The VBA macros contain obfuscated calls to the Shell() function, which are designed to execute a downloaded payload. The Auto_Close macro is triggered upon closing the presentation, initiating the malicious chain. The reconstructed URL 'http://1230948%1230948@j.mp/dbaksdhbjksadbcmagsjd' is the primary indicator for the second-stage download.

Heuristics 7

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • Obfuscated VBA Shell command with URL critical OLE_VBA_OBFUSCATED_SHELL_URL
    VBA macro invokes Shell with command text assembled through decoder or string-manipulation functions and includes a URL. This is a high-confidence downloader/dropper pattern, stronger than Shell or URL evidence on their own.
  • Obfuscated auto-exec VBA loader critical OLE_VBA_OBFUSCATED_AUTOEXEC_LOADER
    Auto-exec VBA reconstructs strings with a heavy custom decoder (numeric char-array, repeated hex-string decode, or junk-token Replace removal) and feeds them to a COM-instantiation or execution sink. This obfuscated-loader shape keeps CreateObject/Shell/URL indicators out of the macro source.
  • 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.
  • 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://1230948%1230948@j.mp/dbaksdhbjksadbcmagsjd

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
e1b118ab366962feff080dddeb99ca71f8f0eab421cab369349319f6c4d58e23		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 37851 bytes

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