Malicious RTF — malware analysis report

Static analysis result for SHA-256 2e1fa8227015b7a2…

MALICIOUS

RTF

68.5 KB
MD5: f0bfdce8b9d7ae702fd8ab4270e8b013 SHA-1: cd758a155680fa8fef08df948281589808c4bacb SHA-256: 2e1fa8227015b7a2edbe63bf0ec3076b8fb7ea0978c3459ff485be7857f5671c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF file contains an embedded OLE object that leverages a known vulnerability in Microsoft Equation Editor (CVE-2017-11882). This vulnerability allows for arbitrary code execution when the object is processed. The exploit likely leads to the execution of a second-stage payload, although no specific payload or network indicators were extracted from this sample.

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
6d25c34c82c0c09d83d310a62a8aaa68b5d8c18f55cb51d63543dc7afe715990		 rtf-objdata-decoded RTF \objdata at offset 0x10B 3631 bytes

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