Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 0d3a500677f84c74…

MALICIOUS

RTF / .DOC

3.4 KB First seen: 2023-10-13
MD5: b369f7fc426c775b65a99ae2c304751e SHA-1: 74e3cda013b63cfec95c366dc0f71b6630df85b3 SHA-256: 0d3a500677f84c749dfa47f13c1951e80b8b77fab39c6ff1c4fb40b0568569d3
60 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The RTF file contains an embedded OLE object, indicated by the RTF_OBJDATA heuristic. The RTF_OBJUPDATE heuristic suggests that this object is designed to be automatically activated upon opening, which is a common technique for exploiting vulnerabilities in older Office versions. The file's verdict as malicious and the presence of these indicators strongly suggest an exploit attempt.

Heuristics 2

  • \objupdate forces OLE activation high RTF_OBJUPDATE
    RTF contains \objupdate — forces automatic OLE object instantiation when the document is opened, bypassing user interaction. Almost exclusively seen in Equation Editor exploit documents.
  • OLE object data medium RTF_OBJDATA
    RTF contains 1 \objdata section(s) — embedded OLE objects

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off0000008b.bin
7b66f1a035a321fb77c61e86b172cf9598c46cbbf524abe5f99b518b91b6d659
rtf-objdata-decoded RTF \objdata at offset 0x8B 1645 bytes