Malicious RTF — malware analysis report

Static analysis result for SHA-256 ba5a8fbfa31e133a…

MALICIOUS

RTF

100.0 KB Created: 2021-07-16 07:42:00
MD5: 9dfc864394176d4cceeb46652784e040 SHA-1: 45f70ee0182cc3de6bd1031546597fe11c240227 SHA-256: ba5a8fbfa31e133acf989aca2525140b56a30908a22abb63539a269f9b3f3c7b
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, indicating the file is designed to exploit this flaw. No specific family could be identified from the available evidence.

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_off00003195.bin
2afa26de7db3851ecba5d56fc8eaf416d263a8ee6c78c10c497901086e03fe7e		 rtf-objdata-decoded RTF \objdata at offset 0x3195 3629 bytes

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