Malicious RTF — malware analysis report

Static analysis result for SHA-256 d00db608e3dfc970…

MALICIOUS

RTF

159.3 KB
MD5: bce948ce58c37bdaf38748807349dcd8 SHA-1: 8ff8162aebe8a938f3549ba8a7676804298427d5 SHA-256: d00db608e3dfc970a457325e9bc136ce5fb61cd9e532282ffcac36dcdf0c114d
100 Risk Score

Malware Insights

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

The RTF file contains an embedded OLE object that triggers a known vulnerability, CVE-2017-11882, in Microsoft Equation Editor. This vulnerability allows for the execution of arbitrary code, indicating a likely exploit delivery mechanism. The file is classified as malicious, and the exploit is the primary indicator of compromise.

Heuristics 3

  • 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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off00002348.bin
e80885dbeef17a36f6571312a5e44dc5db56c1291515d4661db7bf8a1f9e7472		 rtf-objdata-decoded RTF \objdata at offset 0x2348 28445 bytes

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