Malicious RTF — malware analysis report

Static analysis result for SHA-256 ddbde8f89d4cfdd5…

MALICIOUS

RTF

90.4 KB Created: 2021-07-16 07:42:00
MD5: 6f56347a1034ea1b54e4f151a3641c22 SHA-1: fdb87a031ab09c6d90ddf9aa23d6dec2a180214b SHA-256: ddbde8f89d4cfdd59fc9087e1679a95d13265946f3db0f586d1e709a7f742bac
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 when the malformed object data is processed. The exploit is likely intended to download and execute 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_off0000329e.bin
a8beca3220165aa9c162b67667ca824b326216c561f4826c0e31023620efab0d		 rtf-objdata-decoded RTF \objdata at offset 0x329E 3629 bytes

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