Malicious RTF — malware analysis report

Static analysis result for SHA-256 befcc8782778e46d…

MALICIOUS

RTF

9.8 KB Authoring application: Riched20 6.2.9200 First seen: 2015-10-01
MD5: c1ac50b0115aea1178a2942dd1e53bf0 SHA-1: 40ca9d4a420c171449e89de1a1dffb239c51cee6 SHA-256: befcc8782778e46d6c4103c16eea0ee672a11bc37c50f4c15552a254ca7c4fb3
220 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF file contains an embedded OLE object that triggers the CVE-2012-0158 vulnerability, related to MSCOMCTL.ListView. This vulnerability allows for the execution of arbitrary code, as indicated by ClamAV detections of Win.Trojan.MSShellcode. The file's purpose is to exploit this known client-side vulnerability for initial execution.

Heuristics 5

  • MSCOMCTL.ListView — CVE-2012-0158 high CVE related CVE_2012_0158
    RTF \objdata decodes to OLE data containing the MSCOMCTL.ListView — CVE-2012-0158 CLSID — the vulnerable control/moniker is embedded directly in the document's object stream, the delivery shape of this exploit. RTF objects auto-render when Word opens the file.
  • ClamAV: Win.Trojan.MSShellcode-6360729-4 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.MSShellcode-6360729-4
  • 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
  • OlePres presentation stream in RTF OLE object medium RTF_OLEPRES_STREAM
    RTF contains an embedded OLE object with an OlePres presentation stream. OlePres is an OLE presentation marker and is not enough on its own to identify CVE-2025-21298.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off00000169.bin rtf-objdata-decoded RTF \objdata at offset 0x169 4667 bytes
SHA-256: 935675004180963db571fe023128ce01932c0b6873f0fb97544057c76c53dc16
Detection
ClamAV: Win.Trojan.MSShellcode-6360729-4
Obfuscation or payload: unlikely

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