Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 60e160f40e9ab619…

MALICIOUS

Office (OLE)

163.7 KB First seen: 2018-10-07
MD5: 1cb5d2086db716e42c8a69b8b5db5d14 SHA-1: 2c8fb722660cf72d843bab1c461eceb38402fa00 SHA-256: 60e160f40e9ab619a47dbe2e35cc90e946df722b7aac55606171cfb676bc17d2
64 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The sample is an OLE file that fired high-severity heuristics indicating an auto-executing VBA macro (Autoopen) that uses Shell execution. Although VBA extraction failed, the presence of the Autoopen marker and the Shell execution token strongly suggests the macro's intent is to download and execute a second-stage payload. The Autoopen marker itself is a key IOC for this attack.

Heuristics 4

  • 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.
  • Unsupported Office format for VBA extraction info OFFICE_FORMAT_UNSUPPORTED
    olevba could not extract VBA macros (TypeError); format-agnostic byte-level scans still ran. Likely legacy, encrypted, or malformed OLE/OOXML — re-scanning the same bytes will yield the same outcome.
  • 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)