Malicious RTF — malware analysis report

Static analysis result for SHA-256 49838fca3c427443…

MALICIOUS

RTF

47.5 KB Created: 2017-12-02 12:59:00 First seen: 2017-12-09
MD5: a94473c83862b797046abecddf7fee56 SHA-1: 116f69a33a9a4809d8a9326d6a651aa74ee70c34 SHA-256: 49838fca3c42744378c84d50875da88c6fad3aa2d09c8a9712596cad7855aa96
182 Risk Score

Malware Insights

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

The RTF document contains an OLE object that exploits CVE-2017-0199. This vulnerability is used to download and execute a payload from the URL http://xdddd.com/fhgff. The embedded OLE object and the detected exploit indicate a malicious intent to compromise the user's system.

Heuristics 5

  • 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.
  • 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.
  • 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://xdddd.com/fhgff 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_off00002a96.bin rtf-objdata-decoded RTF \objdata at offset 0x2A96 3202 bytes
SHA-256: c9c124c32e987fd7c013f0d6fb51c6f151fc7bee40c8e8d72a6d5d0c62ceb64e

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