Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 e8527234d4aa280d…

MALICIOUS

RTF / .DOC

3.5 KB First seen: 2022-12-05
MD5: dc68a5544371a22a377e8243f9e54533 SHA-1: 451848240fcb806919f471db0ee65a929f443295 SHA-256: e8527234d4aa280d1dd664199beb922f040da17b0e83424b9a9a8f4cc00a840c
60 Risk Score

Malware Insights

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

The RTF document contains an OLE object that is forced to activate via \objupdate, indicating an attempt to exploit a vulnerability. This is a common technique for delivering malicious payloads. The specific exploit targeted is not identifiable from the provided heuristics.

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_off00000078.bin
f7236791cccdabb9f98c28176152a7e6ef6264f8d956b19007f9e819cd988179
rtf-objdata-decoded RTF \objdata at offset 0x78 1681 bytes