Malicious RTF — malware analysis report

Static analysis result for SHA-256 1b4bf6bb8418ecd0…

MALICIOUS

RTF

156.0 KB
MD5: bc95b1ef458e966d73da487477e41e12 SHA-1: 9d0c52bc5f66c2c2b627c04954e226f77d2dee6e SHA-256: 1b4bf6bb8418ecd0d646d87c6ef0b661cfd617ac7d226facea881b41dc0c22d8
100 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF file contains an embedded OLE object that triggers the CVE-2017-11882 vulnerability in Microsoft Equation Editor. This vulnerability allows for the execution of arbitrary code, indicating a likely exploit attempt.

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_off00002367.bin
e48875cc6b3626482b3b68d8acd831aeb0e6b3a23ec2467f7ffb66973fa8bc01		 rtf-objdata-decoded RTF \objdata at offset 0x2367 28445 bytes

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