Malicious RTF — malware analysis report

Static analysis result for SHA-256 9899d6c56a87995d…

MALICIOUS

RTF

37.7 KB Created: 2016-11-27 22:42:00 First seen: 2017-10-28
MD5: 8e2aac4e0f41f1f620baa2ed7ba61871 SHA-1: 1c20f673fca2f210c362d09fcb39f79a0768f01f SHA-256: 9899d6c56a87995d8fd8a264ba36cef6a9f8c1bfb7034dad447254d2624a9dca
122 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 to fetch a remote template.doc from http://91.219.236.207/documents/quick_search/template.doc. This indicates a likely attempt to execute arbitrary code by leveraging a known vulnerability in Microsoft Office applications. The document body appears to be a Russian-language order for awarding civilian personnel, likely a lure.

Heuristics 4

  • 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.
  • 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://195.8.62.74/documents/quick_search In RTF body
    • http://91.219.236.207/documents/quick_search/template.docIn RTF body
    • http://doc.mil.ru/documents/quick_search/more.htm?id=142042894@egNPAIn 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_off000035ca.bin rtf-objdata-decoded RTF \objdata at offset 0x35CA 2724 bytes
SHA-256: f9abcbaf8af69af754cdc6a92a236cf1466eb61a0f20b6a8910dbce2db30c6fb

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