Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 bf18ff8b69ffda76…

MALICIOUS

RTF / .DOC

3.4 KB First seen: 2022-12-20
MD5: a2126443043718963b05a4f619b80d51 SHA-1: 6a741dca88e4dabf8560af2590bc037bd91f23c9 SHA-256: bf18ff8b69ffda76faf388df8a3bacbdf038c39070fc167719e4fad9ac46ef6a
60 Risk Score

Malware Insights

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

The RTF document contains an embedded OLE object with the \objupdate directive, indicating an attempt to trigger an exploit upon opening. This is a common technique for delivering malicious payloads. While no specific exploit or payload was directly identified, the presence of these indicators strongly suggests a malicious intent to compromise the user's system.

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_off0000007a.bin
c9e83c0469df7b35b6d74f91926cb7751c82ced24e6f9468d06bab59907f2966
rtf-objdata-decoded RTF \objdata at offset 0x7A 1620 bytes