Malicious RTF — malware analysis report

Static analysis result for SHA-256 3238cb6f2927a059…

MALICIOUS

RTF

72.2 KB
MD5: d4877e32ebbb15eb0714cb1ac9207626 SHA-1: 88d281ea25be8af6b8e663bbee984e5b5f6c41ac SHA-256: 3238cb6f2927a05925224a8b5406aa36d84ed5ebe821399230fc40ccb090c2fa
100 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF document contains an embedded OLE object that triggers the CVE-2017-11882 vulnerability in Microsoft Equation Editor. This vulnerability allows for arbitrary code execution, indicating the file is designed to exploit this flaw to compromise the system.

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_off0000010d.bin
d069bcc932b83a1fd27961f0c22e974c5acdfbe9dac7c41121db318841365638
rtf-objdata-decoded RTF \objdata at offset 0x10D 3631 bytes