Malicious RTF — malware analysis report

Static analysis result for SHA-256 0f12199e47a45756…

MALICIOUS

RTF

5.6 KB First seen: 2019-01-11
MD5: 138f6aa2c4253278dc8b6f77bd249524 SHA-1: dbc0cbd10076bcfacf6510df408ab7b8ca89e8bd SHA-256: 0f12199e47a45756e9935eb9315fbd7b2e249303bf617fd290592f0ca282b655
222 Risk Score

Malware Insights

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

The RTF file contains OLE object data that is automatically linked and updated, exploiting CVE-2017-0199. This vulnerability allows the file to fetch and execute a remote OLE object from the URL http://5.175.225.26/logo.doc, indicating a malicious payload delivery attempt.

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://5.175.225.26/logo.doc 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_off000001ab.bin rtf-objdata-decoded RTF \objdata at offset 0x1AB 2601 bytes
SHA-256: a92b01f5d8e78b115f30942a0eebef5c1306cad3529caa991401ee26296a536f

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