Malicious RTF — malware analysis report

Static analysis result for SHA-256 9ab719d0974e9aa9…

MALICIOUS

RTF

36.6 KB Created: 2016-11-27 22:42:00 First seen: 2019-09-30
MD5: 779d989687276a9785a2c4d0b1029c38 SHA-1: c03404386cdd3a25a37a8ca2672460eac3e0c480 SHA-256: 9ab719d0974e9aa9c82775f53df32d7d1dc445faf97622cc18c2f62651974ad9
122 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF file contains an OLE object that is automatically linked and exploits CVE-2017-0199. This exploit is used to download a HTA file from the URL http://rottastics36w.net/template.hta, which is then likely executed on the victim's machine. The embedded OLE object data further supports the malicious nature of the file.

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://rottastics36w.net/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_off00003180.bin rtf-objdata-decoded RTF \objdata at offset 0x3180 2724 bytes
SHA-256: 8a7671bc344074e3e9286b731bb34e62f9a336ec39bce9fddd81329a9219403b

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