Malicious RTF — malware analysis report

Static analysis result for SHA-256 b795537c14bc331c…

MALICIOUS

RTF

81.4 KB
MD5: 20c33ccd110252ddddfb983c29590d82 SHA-1: 965f9ff2abf0ab9a8376d55884f0633fba07c5f2 SHA-256: b795537c14bc331c7f5e6b46765039e12d4665101c32eb359d6f484f64f71d7e
160 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 known flaw to compromise the victim's system.

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_off00002352.bin
527b11af19f1684a6935667fd1a2228fce934caae098562ffb9dfe6bdc68c051		 rtf-objdata-decoded RTF \objdata at offset 0x2352 3631 bytes

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