Malicious RTF — malware analysis report

Static analysis result for SHA-256 a77b8708ab2a3a30…

MALICIOUS

RTF

48.5 KB Created: 2017-08-13 10:25:00 First seen: 2017-08-27
MD5: a34753bb08a1cd8be232b1594f958d5e SHA-1: 37f9cb724267441a74c7a15956f7f95402c6ea88 SHA-256: a77b8708ab2a3a30bb8046cd7ae432e9f1cf0587491c86fc8f6b8620a9f6cf5e
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://192.168.199.73/1.rtf, which is likely to host a secondary payload. This indicates a pattern of using document exploits to download and execute further malicious content.

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: 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://192.168.199.73/1.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_off00002a0e.bin rtf-objdata-decoded RTF \objdata at offset 0x2A0E 6120 bytes
SHA-256: d6e807ed798fd006a5b4a2e594867ed740abc5e4c23db32a020415e3f8271bf0

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