Malicious RTF — malware analysis report

Static analysis result for SHA-256 f80b78846cea5c03…

MALICIOUS

RTF

44.7 KB Created: 2018-05-21 05:20:00 First seen: 2019-04-18
MD5: 6bb5de83bda7cc4cac357ec4912a9cd6 SHA-1: 3fc5d505359d1eee8a65c6f521a2597a012eec2d SHA-256: f80b78846cea5c03baa70c44ba365b2c1e5489289fdf9bf89f546fed31a812eb
142 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF document contains an OLE object that exploits CVE-2017-0199, indicated by the 'CVE_2017_0199_WEAPONIZED_URL' heuristic. This exploit is designed to download and execute a payload from the embedded URL 'http://dhm-mhn.com/sunday/htaslyzeco.hta'. The presence of OLE object data and automatic linking further supports the exploitation of embedded objects for malicious purposes.

Heuristics 5

  • 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.
  • 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://dhm-mhn.com/sunday/htaslyzeco.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_off000026e7.bin rtf-objdata-decoded RTF \objdata at offset 0x26E7 7468 bytes
SHA-256: 26b166bb1b8e95e060e58322e466230c14a1ba157022309aa7e5c616c12b465b

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