Malicious RTF — malware analysis report

Static analysis result for SHA-256 ab4678f446819df0…

MALICIOUS

RTF

109.1 KB Created: 2021-07-16 07:42:00
MD5: 2f481047dd955e2551b1dbc49925e822 SHA-1: 204dea1649bac8b53553f2d0179bcd1e1636391f SHA-256: ab4678f446819df036cb0c10e8f83c78d9eafaada08d37c87c17d1c3a4d37952
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 a malicious intent to compromise the system. The embedded object itself is the primary indicator of compromise.

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_off000030e7.bin
d248d80feceb82488660b8bdcc0ac3c7b2db7c095058f21beeb088a29473db38		 rtf-objdata-decoded RTF \objdata at offset 0x30E7 3629 bytes

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