Malicious RTF — malware analysis report

Static analysis result for SHA-256 cf731546cd686177…

MALICIOUS

RTF

113.2 KB Created: 2021-07-16 07:42:00
MD5: 5db937000d33f6b3365e2f09542dfc06 SHA-1: edc32adc60d195aac451e33395eaae85ae282d1e SHA-256: cf731546cd6861776f646938888a9cc84b3e6661d1efafd128081476398cea27
102 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. No specific malware family could be identified from the available evidence.

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.
  • 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
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://schemas.microsoft.com/office/word/2003/wordml

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off000032fe.bin
1cd075a3e91924db9c488fa200063b9312ba42072a0487456fb0ffc20a65f6dd		 rtf-objdata-decoded RTF \objdata at offset 0x32FE 3629 bytes

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