Malicious RTF — malware analysis report

Static analysis result for SHA-256 29f3b4da07346997…

MALICIOUS

RTF

36.6 KB Created: 2016-11-27 22:42:00 First seen: 2017-11-20
MD5: 13c94fa4eb8800669c5719c658eb3d72 SHA-1: 34026921572c603325426220a94e7a58d3a7eb86 SHA-256: 29f3b4da07346997d0e60716e9ab922d548f48b87a5cb1d600f454ae1bbc0fe6
122 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF document contains an OLE object with an automatically linked URL, identified as a weaponized exploit for CVE-2017-0199. This exploit is designed to download and execute a secondary payload from the specified URL, which in this case is an HTA file hosted on an internal IP address. The embedded URL is the primary indicator of compromise.

Heuristics 4

  • 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
  • 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://192.168.15.25/template.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_off00003185.bin rtf-objdata-decoded RTF \objdata at offset 0x3185 2724 bytes
SHA-256: 6b5e04bb180ea8243d2676304887efb5792a7ba17130ca96cf14548b2d2e24bd

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