Malicious RTF — malware analysis report

Static analysis result for SHA-256 6deb638d8c71a59b…

MALICIOUS

RTF

271.8 KB Created: 2021-02-12 04:30:00
MD5: ba114a2ca40e40d2a812317f28d804b3 SHA-1: 4e77ce6eaf36f3d330084d7084ebe0b8be0682d9 SHA-256: 6deb638d8c71a59b7e1edfb05acae6d23dd61d709ca3e1d2e125184bbb503eeb
102 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF file contains embedded OLE object data and specifically triggers the CVE-2017-11882 heuristic, indicating exploitation of the Equation Editor vulnerability. This vulnerability allows for arbitrary code execution when the document is opened. No document body content or scripts were present to provide further context on the payload or its intent.

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_off00001bc4.bin
0109f29ba73d8a06ba5b0763ff15e485d8a02093d47d8d94baa960f825669f10		 rtf-objdata-decoded RTF \objdata at offset 0x1BC4 3631 bytes

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