Malicious RTF — malware analysis report

Static analysis result for SHA-256 bc687c7b12b6400d…

MALICIOUS

RTF

45.6 KB Created: 2017-08-22 04:43:00 First seen: 2017-08-27
MD5: 66f170f222e10d060179eb3c7f9678b1 SHA-1: 22ac26834ee8e3862ed9837d041551e5f1cc281a SHA-256: bc687c7b12b6400d7ab9d89ce704cca7210338d6739a46c850e6665cef0db71d
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://192.168.50.250/ms.rtf to download and likely execute a secondary payload. The presence of OLE object data and automatic linking further supports the exploitation of embedded objects.

Heuristics 6

  • 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.
  • ClamAV: Doc.Dropper.Agent-7146907-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.Agent-7146907-0
  • 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://192.168.50.250/ms.rtf 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_off00002a86.bin rtf-objdata-decoded RTF \objdata at offset 0x2A86 4908 bytes
SHA-256: f086263b90de367f1d93984fb0ac61c7cca24f1eebf1de23f142126819a13062

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