Malicious RTF — malware analysis report

Static analysis result for SHA-256 639acf693fe3c5b3…

MALICIOUS

RTF

37.2 KB Created: 2017-11-22 16:21:00 First seen: 2017-11-29
MD5: 1d36fcef161500bd2b608fecd6485d60 SHA-1: 4a012f494f37abafc7ea9ba39583835f474f69c0 SHA-256: 639acf693fe3c5b34a9f3a839a98174ebb043653cc2410d24e9418a19ec1d328
122 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF file contains an OLE object that is automatically linked and exploits CVE-2017-0199. This exploit is designed to download and execute a second-stage payload from the embedded URL http://www.abogs-ly.com/temp/1.hta, which is likely malicious.

Heuristics 4

  • 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.
  • 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://www.abogs-ly.com/temp/1.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_off00002722.bin rtf-objdata-decoded RTF \objdata at offset 0x2722 3640 bytes
SHA-256: 77201035845700a2e6d240f43b52d46e8a4ac1ca67001ef5c79a8af43fa1d131

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