Malicious RTF — malware analysis report

Static analysis result for SHA-256 6bb28a5f1ecca4fe…

MALICIOUS

RTF

41.9 KB Created: 2018-03-19 19:16:00 First seen: 2019-04-18
MD5: ec503f9142db008d0e1aafe0d0312a0e SHA-1: daaa089c5e78b8c83e62b3b2b9493b01e9dae505 SHA-256: 6bb28a5f1ecca4fe9aee6b2f27be71e22d138a1216c83dea7a7b91171345ae07
122 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF document contains an OLE object that exploits CVE-2017-0199, indicated by the 'CVE_2017_0199_WEAPONIZED_URL' heuristic. This exploit is designed to download and execute a payload from the embedded URL 'http://dhm-mhn.com/sunday/htamandela.hta'. The document body appears to be financial information, likely a lure to trick the user into opening the malicious content.

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://dhm-mhn.com/sunday/htamandela.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_off00002978.bin rtf-objdata-decoded RTF \objdata at offset 0x2978 3640 bytes
SHA-256: 149a4ba5d1e27ea2496af51318359dea8f3046ff7856da1cd7fb734bd376ebf8

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