Malicious RTF — malware analysis report

Static analysis result for SHA-256 da9cc6f015e93af3…

MALICIOUS

RTF

135.9 KB Created: 2017-09-18 03:06:00 First seen: 2017-10-10
MD5: ca8a153890a82655b0dc471b8e9c97cb SHA-1: f54cb191e5bb1b206fb878ea8266010918c136ec SHA-256: da9cc6f015e93af32e65e94a8691fbe93398dab753f8893c032437774da34ee0
202 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF file contains an OLE object that exploits CVE-2017-0199, a known vulnerability for remote code execution. The exploit targets the URL https://savethren.com/core/lib/remaos.hta, which likely serves as a second-stage payload. The presence of OLE object data and the specific CVE exploit strongly indicate a malicious intent to compromise the user's system.

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 https://savethren.com/core/lib/remaos.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_off00002831.bin rtf-objdata-decoded RTF \objdata at offset 0x2831 13410 bytes
SHA-256: 1ed3ac81728ba2849ba9e12e3bc6a8ed558f6d0fdaef37084571eced31d91ce7

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