Malicious RTF — malware analysis report

Static analysis result for SHA-256 38d5582007a76379…

MALICIOUS

RTF

185.3 KB Created: 2017-10-02 15:50:00 First seen: 2017-10-10
MD5: 58fb1c4f24427f3ab2e9729f36c385fd SHA-1: 1fc814de84c7cf3c4e5e6820bb1d89a05abcedda SHA-256: 38d5582007a76379f666324db08594fd55d450dc7a613cdbef4788dfd54b47c7
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 critical vulnerability allowing for remote code execution. The embedded URL http://birsekermasali.com/hta/gen.hta is used to download and execute a secondary payload, likely an HTA file, which is a common technique for initial compromise via spearphishing attachments.

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://birsekermasali.com/hta/gen.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_off000027e2.bin rtf-objdata-decoded RTF \objdata at offset 0x27E2 24990 bytes
SHA-256: 840f892e51beb2d6342b5c411a4c1d5ca9460da4480ea93b1e0de157736f5cd7

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