Malicious RTF — malware analysis report

Static analysis result for SHA-256 f6de7d8dae499763…

MALICIOUS

RTF

120.9 KB Created: 2021-07-16 07:42:00
MD5: 751ee91554ff74cf1fe866cbffb6183d SHA-1: ece9e48bc25472dd2497fc1ca58f34925f7bc897 SHA-256: f6de7d8dae4997638f4d92d12c73e56e7f03bcde8806e37d1082912a69858ff4
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 exploit allows for arbitrary code execution, likely to download and run a secondary payload.

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_off00003299.bin
e96d7201b55dffd41bce1d2a3851291d9b15f8f138aec6da24500f48472abbe4		 rtf-objdata-decoded RTF \objdata at offset 0x3299 7725 bytes

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