Malicious RTF — malware analysis report

Static analysis result for SHA-256 e9fe75271aad8ff6…

MALICIOUS

RTF

54.2 KB
MD5: 5b92d412ec107f409f6038466170d91e SHA-1: 96721c175a16b8d6b8d054e0395f58f7b6deb14a SHA-256: e9fe75271aad8ff60ef5a3cc8fb84a22d02f7f13d689d608099d23434298f722
160 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF document contains a critical heuristic firing for CVE-2017-11882, indicating exploitation of the Equation Editor vulnerability. This vulnerability allows for arbitrary code execution, likely to download and run a secondary payload. No other specific indicators like URLs or scripts were extracted.

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.
  • Equation Editor CLSID critical RTF_EQUATION_EDITOR
    Equation Editor OLE CLSID found inside an OLE object — exploited by CVE-2017-11882 / CVE-2018-0802 / CVE-2018-0798
  • 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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off00000115.bin
288e4cef6ad597c6211a92af5c990ea04ce42b3ffa9fd3f7ab99bcda9d05f67e		 rtf-objdata-decoded RTF \objdata at offset 0x115 3631 bytes

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