Malicious RTF — malware analysis report

Static analysis result for SHA-256 d6e791944d3bbe61…

MALICIOUS

RTF

29.8 KB Created: 2016-11-27 22:42:00 First seen: 2019-08-04
MD5: 5d735199100954cf9b36eacfc0eb6226 SHA-1: b8a5211a4af1c5ab96f3b6b646eee05db4df8158 SHA-256: d6e791944d3bbe61eeee0f578068156115ecc2a3b4ad0b3ed3e524feeb6c3912
122 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF file contains an OLE object that exploits CVE-2017-0199, a vulnerability allowing remote code execution. The exploit targets the URL http://95.141.38.110/mo/dnr/tmp/template.doc to download and likely execute a secondary payload. The presence of the OLE object and the specific CVE exploit strongly indicate a malicious intent to compromise the user's system.

Heuristics 4

  • 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.
  • 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://95.141.38.110/mo/dnr/tmp/template.doc 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_off00001652.bin rtf-objdata-decoded RTF \objdata at offset 0x1652 2724 bytes
SHA-256: 5d5735ecbc809d70c2089946302aa0991f6c582148ba3a504a216a4d5e39bce7

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