Malicious RTF — malware analysis report

Static analysis result for SHA-256 92e0592be4b479fe…

MALICIOUS

RTF

5.7 KB Authoring application: Msftedit 5.41.21.2510 First seen: 2020-02-04
MD5: 27853a1118691293e509b5142a4ba143 SHA-1: 1d9788d501362e656a6e8cb6ebb2aebe4d0e66b7 SHA-256: 92e0592be4b479fecdca97794c1298589b74d390f3baca26a7df5169bc7d98b4
222 Risk Score

Malware Insights

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

The RTF file contains an embedded OLE object that is automatically linked and updated, indicating an attempt to exploit CVE-2017-0199. This vulnerability allows the file to download and execute a remote payload from the specified URL. The presence of the CVE-2017-0199 exploit and the embedded URL strongly suggest a malicious intent to compromise the user's system.

Heuristics 6

  • 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.
  • \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://not.exist.domain.never/cve-2018-8174.html In RTF body

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off00000105.bin rtf-objdata-decoded RTF \objdata at offset 0x105 2769 bytes
SHA-256: 96161fc8492c8cb38e78e879b5688cd52de78cb4c99d82a84d194346d012a101

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