Malicious RTF — malware analysis report

Static analysis result for SHA-256 f53386e47bf65668…

MALICIOUS

RTF

112.6 KB Created: 2021-07-16 07:42:00
MD5: cc4d11a962be3f3e1699ac75c46d2f21 SHA-1: ce7e2483c54461ccceacaa28df2e50be8af1e586 SHA-256: f53386e47bf65668a8b157f79c6f39e4fff023bbb84a8bad8d62fa44f871f5bb
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 the execution of arbitrary code, indicating a likely exploit attempt. No document body or scripts were extracted, but the critical heuristic firing strongly suggests exploitation.

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_off00003079.bin
df9a98a374a73f304ba2d6b2765d2ce15b54db0988923f227046ae0212fb0af3		 rtf-objdata-decoded RTF \objdata at offset 0x3079 3629 bytes

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