Malicious RTF — malware analysis report

Static analysis result for SHA-256 726c81ac2fde5d7c…

MALICIOUS

RTF

153.1 KB
MD5: bac71113d7696e18ec658bafd5eca7c9 SHA-1: 55d2285da6446861577ae4c3dc13f8f7fe942ef8 SHA-256: 726c81ac2fde5d7cd8fa3ada4dee31fc13526b1a5ad8febc338f1cd69c79e718
100 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF file contains an embedded OLE object that triggers a known vulnerability, CVE-2017-11882, in Microsoft Equation Editor. This vulnerability allows for arbitrary code execution, indicating the file is designed to exploit this flaw to compromise the user's 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_off000023af.bin
98c6d98ee5477131bcf54fc99f4d5299cad1dfd96393629f8c2818b1aedac6b0		 rtf-objdata-decoded RTF \objdata at offset 0x23AF 28445 bytes

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