Malicious RTF — malware analysis report

Static analysis result for SHA-256 65ee11d08fbf94af…

MALICIOUS

RTF

5.6 KB First seen: 2019-08-04
MD5: a28aef15cd50973895cca6965930fe38 SHA-1: fdcbdbc12a3448e2b8bbf6bf9dd430f0abc9a36f SHA-256: 65ee11d08fbf94af272aad8ddb23e741269a1d104820369d7ed3cd186a7fd69b
222 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF file contains embedded OLE object data that leverages the CVE-2017-0199 vulnerability. This vulnerability is triggered by an automatically linked OLE object that forces an update, leading to the download and execution of a second-stage payload from the URL http://192.168.2.81:8080/default.hta. This indicates a clear intent to execute arbitrary code from a remote source.

Heuristics 6

  • 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.
  • 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://192.168.2.81:8080/default.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_off000001b4.bin rtf-objdata-decoded RTF \objdata at offset 0x1B4 2601 bytes
SHA-256: d371cb9e62f4cfb1f7c87f5d7508f33c86b286b8f5777dc891add5ae4916d90e

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