Malicious RTF — malware analysis report

Static analysis result for SHA-256 3d91e2207ac0897f…

MALICIOUS

RTF

101.6 KB Created: 2021-07-16 07:42:00
MD5: 0e90ac2647bf8e5aa94c4856d1166287 SHA-1: 825aa46672668bf4591e3f301934571a7acbdd10 SHA-256: 3d91e2207ac0897fc98275c8f201701fe84f974bc630f35686a003290257bce0
102 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF file contains an embedded OLE object that triggers a known vulnerability, CVE-2017-11882, in the Microsoft Equation Editor. This vulnerability allows for arbitrary code execution, indicating the file is designed to exploit this flaw to compromise the user's system. 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_off000032db.bin
0109f29ba73d8a06ba5b0763ff15e485d8a02093d47d8d94baa960f825669f10		 rtf-objdata-decoded RTF \objdata at offset 0x32DB 3631 bytes

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