Malicious RTF — malware analysis report

Static analysis result for SHA-256 24bc036f780514f4…

MALICIOUS

RTF

43.4 KB Created: 2017-09-26 11:27:00 First seen: 2017-10-10
MD5: eddc25564eba877df9956dc4ffbffe96 SHA-1: b7d7f0a93c7cd7588880bc51024bf8cba6654d36 SHA-256: 24bc036f780514f4a55ac0f02c5ceadb9e60628266325ce199a1daf80816dee9
202 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF file contains a critical heuristic firing for CVE-2017-0199, indicating it exploits a vulnerability in OLE object linking to download a payload. The embedded URL http://10.91.4.32:8080/default.hta is likely the second-stage payload. The presence of OLE object data and an automatically linked OLE object further supports the exploitation vector.

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://10.91.4.32:8080/default.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_off00002777.bin rtf-objdata-decoded RTF \objdata at offset 0x2777 4664 bytes
SHA-256: b6aa9279da72a51a5aca9fd7e0d7782247c6eed6f66421e3290fe9e9f097e9e7

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