Malicious RTF — malware analysis report

Static analysis result for SHA-256 e9308f247deaa0f4…

MALICIOUS

RTF

39.3 KB Created: 2017-11-08 09:41:00 First seen: 2017-11-13
MD5: b98161986e475076ef71dadf4c77fd85 SHA-1: d40c9ea6c3bc120f80145635e413d83ac01f21b4 SHA-256: e9308f247deaa0f41edc705044c7ccbb648e7ffb001b2d7f6d3054b9b2f747c9
202 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://kenion.com.mx/htaswift.hta, which likely hosts a malicious HTA payload. This indicates the file is designed to deliver and execute a second-stage payload via a spearphishing attachment.

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://kenion.com.mx/htaswift.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_off000026a0.bin rtf-objdata-decoded RTF \objdata at offset 0x26A0 4664 bytes
SHA-256: b9232afb096cd2acfc9e73715991dd20688bd0cd9e518f44b285de61b1f7b88d

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