Malicious RTF — malware analysis report

Static analysis result for SHA-256 6830c8d088c880d8…

MALICIOUS

RTF

17.2 KB First seen: 2021-06-28
MD5: e82135472fe9de8ecd83c59e3c6d75b1 SHA-1: c0a6a25acd0e5b92d494635fdbecbec44b34398b SHA-256: 6830c8d088c880d84d52f8e2f06fd4902e8fa48b52b2e890b99eda4296f87c0a
102 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF document contains OLE object data and triggers a high-severity heuristic for CVE-2012-0158, indicating exploitation of a known vulnerability. The document body contains a lure to enable editing, and a suspicious executable is hosted at the provided URL, suggesting the document's purpose is to exploit the vulnerability to download and execute a second-stage payload.

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.
  • OLE object data medium RTF_OBJDATA
    RTF contains 1 \objdata section(s) — embedded OLE objects
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
  • Suspicious extracted artifact medium EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • 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://94.102.63.7/putty.exe In RTF body

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off00000cf1.bin rtf-objdata-decoded RTF \objdata at offset 0xCF1 5700 bytes
SHA-256: 1bbe2f007a5d4ff56cdc382a0492beee80dbe9cd4651c683af7eb8a30c7131b0
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Static shellcode analysis found candidate code region(s). Indicators: SC_PEB_ACCESS