Malicious RTF — malware analysis report

Static analysis result for SHA-256 e3414e2801a68ca1…

MALICIOUS

RTF

113.1 KB Created: 2021-07-16 07:42:00
MD5: 67da2785d2f067fa0dbe8a7355ddaf74 SHA-1: 1580514bcf4c04da987b06eb3d01be7ba8106eee SHA-256: e3414e2801a68ca15738b187ba7e5721a384d804c3aa6d6319365cffac603272
102 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF file contains an embedded OLE object that triggers the CVE-2017-11882 vulnerability in Microsoft Equation Editor. This vulnerability allows for arbitrary code execution when the malformed object is processed. The embedded URL is benign and does not appear to be part of the exploit.

Heuristics 4

  • CVE-2017-11882 — Equation Editor FONT record overflow critical CVE likely CVE_2017_11882
    Equation Editor MTEF contains an overlong FONT typeface field, the vulnerable copy primitive for CVE-2017-11882. This is stronger evidence than the Equation Editor CLSID alone because it identifies the malformed record that drives code execution in EQNEDT32.EXE.
  • OLE object data medium RTF_OBJDATA
    RTF contains 1 \objdata section(s) — embedded OLE objects
  • Embedded OLE object medium RTF_OBJEMB
    RTF contains \objemb — embedded OLE object
  • 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://schemas.microsoft.com/office/word/2003/wordml

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off000030ff.bin
bb733ce334ea82a87e92a483bad327a947199c81745fdd405ee9e32153b55b32		 rtf-objdata-decoded RTF \objdata at offset 0x30FF 3629 bytes

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