Malicious RTF — malware analysis report

Static analysis result for SHA-256 47025c4c2bad450c…

MALICIOUS

RTF

52.8 KB
MD5: b9458d004b6065eeff181648617b8acf SHA-1: c4ea9a58495755058752ed4339b3eb39c8b81c66 SHA-256: 47025c4c2bad450cdd534e45bca6f1953210cb29e4a5dc4097083cec9c87bfef
160 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 exploits the CVE-2017-11882 vulnerability in Microsoft Equation Editor. This vulnerability allows for arbitrary code execution when the document is opened, likely leading to the download and execution of a secondary payload. The presence of the Equation Editor CLSID and the specific CVE firing strongly indicate this exploit.

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_off0000010b.bin
ac5962ed9ff88b4d68310347ac7302f423c455d543f57263de799123d0657abd		 rtf-objdata-decoded RTF \objdata at offset 0x10B 3631 bytes

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