Malicious RTF — malware analysis report

Static analysis result for SHA-256 ee1fa3df4a691933…

MALICIOUS

RTF

323.7 KB Created: 2021-02-12 04:30:00
MD5: 95556f510acbfb250144fa00029540cc SHA-1: 6ec41e1c38c86977545cfd4f317455d795b12d15 SHA-256: ee1fa3df4a691933a18e7de808f720cbe84360392ae553ef105eb1adcaef8880
102 Risk Score

Malware Insights

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

The RTF document contains an embedded OLE object that exploits the CVE-2017-11882 vulnerability in Microsoft Equation Editor. This vulnerability allows for arbitrary code execution, indicating a malicious intent to compromise the user's system. The document's content appears to be a list of schools, likely a lure to entice the user to open the malicious attachment.

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_off00000122.bin
ee71f687c707060baafe8e6e85f50aa790d5b21d2dccde3734b9bdd604d752a6		 rtf-objdata-decoded RTF \objdata at offset 0x122 3629 bytes

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