Malicious RTF — malware analysis report

Static analysis result for SHA-256 ca71f743e7bccb42…

MALICIOUS

RTF

178.4 KB
MD5: ccb51c06632864e580264cc7d54f77b1 SHA-1: 9e5e541ccb2ac2eb4024665c9c87b473ae09d2a6 SHA-256: ca71f743e7bccb429b2d2512d4c899b5751dbae402fc008ffe1bba9538861e94
100 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF file contains an embedded OLE object that triggers a critical vulnerability, CVE-2017-11882, in Microsoft Equation Editor. This vulnerability allows for the execution of arbitrary code, indicating a likely exploit attempt. No further details on the payload or family could be determined from the provided evidence.

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_off00002153.bin
cc612e7470caa2f490ba6d8e9486d2fa58f6701163b0fb1edf945ac6803189bf		 rtf-objdata-decoded RTF \objdata at offset 0x2153 28445 bytes

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