Malicious RTF — malware analysis report

Static analysis result for SHA-256 d00501e43e2e8c9c…

MALICIOUS

RTF

5.6 KB First seen: 2017-10-28
MD5: fd3ad8c27a82156c07abe8d333d64a7d SHA-1: f176a2753665a10a3c5e96af80a75dd57d51d3ab SHA-256: d00501e43e2e8c9cb23e92d90fdd7940ff2dd58e934b5a5b6f7b04f8a80991c7
222 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The RTF file contains an OLE object that is automatically linked and updated, a known technique for exploiting CVE-2017-0199. This exploit is designed to download and execute a secondary payload from the specified URL. The embedded URL http://192.168.200.200/payload.hta is highly suspicious and likely points to the malicious payload.

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://192.168.200.200/payload.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_off000001a2.bin rtf-objdata-decoded RTF \objdata at offset 0x1A2 2601 bytes
SHA-256: b5850e9f86c384b10b10b9b906b171220fea16d761fc02b64181706651588dfe

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