Malicious RTF — malware analysis report

Static analysis result for SHA-256 e2675572a925367c…

MALICIOUS

RTF

47.3 KB Created: 2017-07-24 17:43:00 First seen: 2018-03-04
MD5: ce2b320560d1817ab24614160ddd806c SHA-1: 20e59a6a36d22262e64a0fc27f9874a67275129a SHA-256: e2675572a925367c7e0fbf2d5e6c9818723e521e384060a0e3782f1612de3389
182 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 known vulnerability for remote code execution. The exploit attempts to download a payload from the URL https://google.com/. While the URL itself is benign, the exploit mechanism is malicious and indicative of a downloader or dropper.

Heuristics 5

  • 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: 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
  • 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://schemas.microsoft.com/office/word/2003/wordml In RTF body
    • https://google.com/In RTF body

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off000029ce.bin rtf-objdata-decoded RTF \objdata at offset 0x29CE 3202 bytes
SHA-256: 66b505225397bc1168d1e1b7dbe5f4cb1c1ee379229df4e599edbf00236a0f71