Malicious RTF — malware analysis report

Static analysis result for SHA-256 4813ab5e1e1b55d1…

MALICIOUS

RTF

115.7 KB Created: 2021-07-16 07:42:00
MD5: 5995db302745e0456255e1201637a456 SHA-1: 34c9b1974065355d7ccba1102f6ebcfe621d00b2 SHA-256: 4813ab5e1e1b55d1ea6bd19b94ad6d745583441d991fc571e0390f0c6008af1d
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 known flaw to compromise the user's system.

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_off00003282.bin
56b2571c69ce3bd5939b736eaf01f5f4a713ae0548262c035a587ef23c8091f9		 rtf-objdata-decoded RTF \objdata at offset 0x3282 3629 bytes

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