Malicious RTF — malware analysis report

Static analysis result for SHA-256 5b2d311bc9416b80…

MALICIOUS

RTF

5.6 KB First seen: 2019-04-18
MD5: 600d11d3895c74a4e6ccfb8b086ac2b1 SHA-1: 4e3842a3e11e89e7955268349a56ca8e65d3a9ff SHA-256: 5b2d311bc9416b803b4ded37488d2fb48b4feeb29464e8a5d8d8e0fb3ca799b2
222 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF file contains an OLE object that is automatically linked and updated, exploiting CVE-2017-0199. This exploit is designed to download and execute a payload from the embedded URL http://142.234.200.99/~dave/1_com/2/ttttt.hta. The ClamAV detection confirms this is a known exploit.

Heuristics 6

  • 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.
  • 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.
  • \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://142.234.200.99/~dave/1_com/2/ttttt.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_off000001ab.bin rtf-objdata-decoded RTF \objdata at offset 0x1AB 2601 bytes
SHA-256: 3d91a8ba260696c71a27448f8c99821643e01af83b21bc0c4980823dbfb869e5

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