Malicious RTF — malware analysis report

Static analysis result for SHA-256 faf6b495c8f5bc4e…

MALICIOUS

RTF

107.1 KB First seen: 2019-08-04
MD5: 65287781f7fdf191aaa2909a6d8c68b6 SHA-1: 7450924f8eaacf62881344d787ff4ffbf6dfb831 SHA-256: faf6b495c8f5bc4e2b7c2e6dc07964b17091e2e719aefcd871b210930bc9428d
140 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF document contains an embedded OLE object with objdata that triggers the CVE-2017-8759 vulnerability. This vulnerability allows for Remote Code Execution (RCE) through SOAP Moniker, indicating the file is designed to exploit this specific flaw to run malicious code.

Heuristics 4

  • SOAP Moniker — CVE-2017-8759 (SOAP WSDL RCE) critical CVE related CVE_2017_8759
    RTF \objdata decodes to OLE data containing the SOAP Moniker — CVE-2017-8759 (SOAP WSDL RCE) CLSID — the vulnerable control/moniker is embedded directly in the document's object stream, the delivery shape of this exploit. RTF objects auto-render when Word opens the file.
  • \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 OLE object medium RTF_OBJEMB
    RTF contains \objemb — embedded OLE object

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off0000003a.bin rtf-objdata-decoded RTF \objdata at offset 0x3A 3235 bytes
SHA-256: c1e70e91ce1ce51dc2d3b7e30898a2685cb0fad382fd9ed9a72e2c1248207a55

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