Malicious RTF — malware analysis report

Static analysis result for SHA-256 9d5463c288706fbb…

MALICIOUS

RTF

80.3 KB Created: 2018-06-18 12:03:00 First seen: 2019-05-16
MD5: 11227eca89cc053fb189fac3ebf27497 SHA-1: c0549c74143fe17ff26ea271249c496cfeaab068 SHA-256: 9d5463c288706fbb2e6646d6a12f80cbe4cf39b82184c51a5d65aba3150c8d68
282 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The RTF document exploits CVE-2017-0199, which allows for remote code execution by activating an OLE object. The embedded URL 'http://193.23.181.151/Seminar.rtf' is used to download a secondary payload. This indicates a likely phishing attempt designed to deliver malware.

Heuristics 7

  • CVE-2017-8759 — MSXML SAX OLE activation critical CVE likely CVE_2017_8759
    RTF contains a hex-encoded OLE1 object for Msxml2.SAXXMLReader.6.0 followed by an embedded OLE compound document, and the document requests OLE activation. This matches the RTF staging shape used for CVE-2017-8759 SOAP/WSDL parser code injection.
  • 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.
  • ClamAV: Doc.Dropper.Agent-6585316-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.Agent-6585316-0
  • 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.
  • \objupdate forces OLE activation high RTF_OBJUPDATE
    RTF contains \objupdate — forces automatic OLE object instantiation when the document is opened, bypassing user interaction. Almost exclusively seen in Equation Editor exploit documents.
  • 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://193.23.181.151/Seminar.rtf 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_off0000be70.bin rtf-objdata-decoded RTF \objdata at offset 0xBE70 2601 bytes
SHA-256: ab12d58e378531137290e168745c4ecd65b6f76a3f67fd7f0a251a00ce82c95f

Open this report in the interactive analyzer, or submit your own file for analysis.