Malicious RTF — malware analysis report

Static analysis result for SHA-256 290683f4952082fc…

MALICIOUS

RTF

56.8 KB
MD5: cbf238ea0a7338cbf3c279a88b3e6159 SHA-1: bb97c683436370f2b8fdb06cc00f98efe1d81129 SHA-256: 290683f4952082fc841d9cb902deaced5e1b2cfc3488ec9c9e04a9514edcf1a6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The RTF file contains an embedded OLE object that leverages a known vulnerability in the Equation Editor (CVE-2017-11882). This vulnerability allows for the execution of arbitrary code, likely to download and run a secondary payload. The file is classified as malicious due to this exploit.

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_off0000010d.bin
a79829060405ebcd6a122c5ade5517a48175b66b9bd05be713a8e22ffc754da1		 rtf-objdata-decoded RTF \objdata at offset 0x10D 3631 bytes

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