Malicious RTF — malware analysis report

Static analysis result for SHA-256 1e205b6c938020cc…

MALICIOUS

RTF

5.5 KB First seen: 2017-09-14
MD5: 95ebe520e7de9f3b578c925a1323ca6d SHA-1: 547a6e176b1c0559518b56763c096d70dfa9d60e SHA-256: 1e205b6c938020cc0ac37cddd79593cd19929380e5d6fadd473f8f57394dbf4d
82 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 embedded URL points to a secondary document, likely a malicious payload, which is then executed on the victim's machine. This indicates a typical phishing attachment delivery mechanism.

Heuristics 3

  • 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.
  • 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://192.168.56.1/logo.doc In RTF body

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off0000010f.bin rtf-objdata-decoded RTF \objdata at offset 0x10F 2601 bytes
SHA-256: c4bbf4cd5e0fef7949413a26bc5cab4a2c62e04af473df24a15ada3b5f07a7b7

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