Malicious RTF — malware analysis report

Static analysis result for SHA-256 7af710e3386749ca…

MALICIOUS

RTF

91.2 KB Created: 2021-07-16 07:42:00
MD5: 4d6a59944bcc813eaaf862a01abcd48a SHA-1: 3a6883e2f6a7836600119f9f8550e8cbb56d0fe7 SHA-256: 7af710e3386749cad2adf197afa8f098fecd219edf106593560f65a84f85b50e
102 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The RTF document contains an embedded OLE object that triggers the CVE-2017-11882 Equation Editor vulnerability. This vulnerability allows for arbitrary code execution, indicating the file is designed to exploit this known flaw. The presence of the exploit and the RTF format strongly suggest it was delivered as a spearphishing attachment.

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_off00002eb2.bin
0109f29ba73d8a06ba5b0763ff15e485d8a02093d47d8d94baa960f825669f10		 rtf-objdata-decoded RTF \objdata at offset 0x2EB2 3631 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.