Malicious RTF — malware analysis report

Static analysis result for SHA-256 0c6c7bc4a82f53ac…

MALICIOUS

RTF

370.6 KB Created: 2017-10-09 15:55:00 First seen: 2017-10-28
MD5: fb6de5a84f9318216fcc6211c8dd30cc SHA-1: 60d921a3c459fb24c508e099a0c6f3f62915eaa9 SHA-256: 0c6c7bc4a82f53accd2815230a233cdad2d627cbf177f02b0549a6cdf13d7196
142 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The RTF file contains an OLE object that exploits CVE-2017-0199, a known vulnerability for remote code execution. The exploit targets the URL http://chilibi.com/pp/t.php?thread=0&t=h to download and execute a secondary payload. This indicates a likely phishing attachment used to deliver malware.

Heuristics 5

  • CVE-2017-0199 (OLE2Link / remote URL Moniker) critical CVE likely CVE_2017_0199
    RTF contains a URL Moniker OLE link whose decoded target is remote. Office can fetch and process the response through the CVE-2017-0199 OLE2Link attack path, but the server-side content type is not proven statically.
  • Automatically linked OLE object high RTF_OBJAUTLINK
    RTF contains \objautlink — an automatically linked OLE object surface that can be updated or activated when Word opens the document.
  • OLE object data medium RTF_OBJDATA
    RTF contains 1 \objdata section(s) — embedded OLE objects
  • OlePres presentation stream in RTF OLE object medium RTF_OLEPRES_STREAM
    RTF contains an embedded OLE object with an OlePres presentation stream. OlePres is an OLE presentation marker and is not enough on its own to identify CVE-2025-21298.
  • 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://chilibi.com/pp/t.php?stats=send&thread=0 In RTF body
    • http://chilibi.com/pp/t.php?thread=0&t=hIn RTF body
    • http://schemas.microsoft.com/office/word/2003/wordmlIn RTF body

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off00002a50.bin rtf-objdata-decoded RTF \objdata at offset 0x2A50 4274 bytes
SHA-256: c6dc8a23a552e8c9196e730a6e633c6afbb7a8a26b3993428100fe84569d31b4

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