Malicious RTF — malware analysis report

Static analysis result for SHA-256 60b8c43347a433e9…

MALICIOUS

RTF

83.0 KB
MD5: 0d03f3d3cf631a9829a659f58d119a2c SHA-1: 6fb753376cebd1512ac3f6d1e7253914a4ec29a6 SHA-256: 60b8c43347a433e96381d317cd51840519691cdf739782bdf167abe14a898a33
100 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF file contains an embedded OLE object that triggers a buffer overflow vulnerability in Microsoft Equation Editor (CVE-2017-11882). This vulnerability allows for the execution of arbitrary code, likely to download and run a secondary payload. No document body or scripts were extracted, limiting further analysis of the payload's intent.

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_off0000239b.bin
95568d3db4c91d1e12ae56c5171d625085dfc8280ff1ac4aa2138a16116e1526		 rtf-objdata-decoded RTF \objdata at offset 0x239B 3631 bytes

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