Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 ff0ac7dcb733c6a7…

MALICIOUS

Office (OLE)

70.0 KB Created: 2018-04-19 18:59:00 Authoring application: Microsoft Office Word First seen: 2020-07-24
MD5: 7087efbe1c887527fe3280fefa63e2a0 SHA-1: 9d1afaf12e8a30fbb5e7aa86aae3e6c8389de5c3 SHA-256: ff0ac7dcb733c6a72089a22c02e538b2a89be3f82b9a3367afece9e4cc7b7309
70 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1203 Exploitation for Client Execution

The sample is a malicious Office document containing a legacy WordBasic macro that is triggered by the AutoClose event. This macro is configured to execute a shell command, indicating its purpose is to download and execute a secondary payload. No specific family could be identified, and no external IOCs were extracted.

Heuristics 4

  • VBA project contains no executable statements low 1 related finding OLE_VBA_MACROS
    Document contains a VBA project, but extracted modules only contain attributes/options/comments and no executable statements.
  • 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.
  • Legacy WordBasic auto-exec macro marker medium OLE_LEGACY_WORDBASIC_AUTOEXEC
    OLE Word document contains a legacy WordBasic auto-execution marker such as AutoOpen, but no modern VBA project was recovered and no stronger macro-virus family marker was present. This is analyst-facing evidence for old Word macro execution surface, not a downloader or parser-CVE attribution by itself.
  • 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://schemas.openxmlformats.org/drawingml/2006/main In document text (OLE body)
    • http://schemas.openxmlformats.org/officeDocument/2006/bibliographyIn document text (OLE body)
    • http://schemas.openxmlformats.org/officeDocument/2006/customXmlIn document text (OLE body)

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