Malicious RTF — malware analysis report

Static analysis result for SHA-256 27c6579fb047c28e…

MALICIOUS

RTF

128.5 KB Created: 2021-07-14 14:25:00
MD5: a0a6bf36f7548a4010570ed242b36ca6 SHA-1: 07cee542dc41f6623b2f1c9048b62efba8da0e64 SHA-256: 27c6579fb047c28e1ccef16cb4b929609d9bb08f718ea08c908facd5bc66482a
102 Risk Score

Malware Insights

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

The RTF document contains an embedded OLE object that triggers the CVE-2017-8759 vulnerability. This vulnerability allows for the execution of arbitrary code, indicating a malicious intent to compromise the user's system. The presence of the OLE object and the specific CVE firing strongly suggest an exploit delivery mechanism.

Heuristics 4

  • CVE-2017-8759 — MSXML SAX OLE activation critical CVE likely CVE_2017_8759
    RTF contains a hex-encoded OLE1 object for Msxml2.SAXXMLReader.6.0 followed by an embedded OLE compound document, and the document requests OLE activation. This matches the RTF staging shape used for CVE-2017-8759 SOAP/WSDL parser code injection.
  • 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_off0001756b.bin
dee8262409f4e62d8dfdaa982337bb201eceab4c0106878795c2d8dc56f31b16		 rtf-objdata-decoded RTF \objdata at offset 0x1756B 2521 bytes

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