Malicious RTF — malware analysis report

Static analysis result for SHA-256 ece86d6196e36065…

MALICIOUS

RTF

54.6 KB Created: 2017-09-04 09:40:00 First seen: 2017-09-14
MD5: 93fcdc51627b82078a3be8cde67fd73d SHA-1: fcfe01882fc8f00dd99c4b3f13b36414ecafb75a SHA-256: ece86d6196e36065b2aa83f42880dac984f35f92026ddf22f24745ed6e9e954c
202 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF file contains a weaponized URL exploiting CVE-2017-0199, which is designed to download and execute a second-stage payload. The embedded URL points to an HTA file, indicating a likely execution of arbitrary code. The heuristic firings strongly suggest exploitation of this vulnerability.

Heuristics 6

  • CVE-2017-0199 (OLE2Link / weaponized URL) critical CVE exact CVE_2017_0199_WEAPONIZED_URL
    RTF contains a URL Moniker OLE link to a script/HTA/template-style remote loader, matching the tighter static CVE-2017-0199 shape.
  • ClamAV: Rtf.Exploit.CVE_2017_0199-6335035-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Rtf.Exploit.CVE_2017_0199-6335035-0
  • 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://198.55.119.166/email.hta In 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_off00005536.bin rtf-objdata-decoded RTF \objdata at offset 0x5536 4560 bytes
SHA-256: 3ff5913c578357e99b16195bdd7bd067b1bcdb9791fecc7bda655a179e89eb34

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