Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 04ca5e488d0f3561…

MALICIOUS

Office (OLE)

20.5 KB Created: 2017-10-16 13:03:00 Authoring application: Microsoft Office Word First seen: 2017-10-28
MD5: ffa21a712419f50832c6c6287ae68af4 SHA-1: fa354d182f29cac9bfebcb4de2d634f6726e965f SHA-256: 04ca5e488d0f356140ed9a87e65b9b6e8a2a14f9f25f5584e5759410d0f18a20
82 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.001 Spearphishing Attachment

The document contains a DDEAUTO field that executes a PowerShell command. This command downloads a script from the provided URL and then executes it. The script itself is obfuscated but appears to be designed to download and run a second-stage payload, indicating a downloader or droppper functionality.

Heuristics 3

  • Reference to PowerShell high SC_STR_POWERSHELL
    Reference to PowerShell
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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://gallery.technet.microsoft.com/scriptcenter/List-for-several-machines-1baf6df0/file/41406/1/ListServerDrivesFreespace.ps1 In document text (OLE body)
    • http://schemas.openxmlformats.org/drawingml/2006/mainIn document text (OLE body)

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