Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 34e340650d0aa345…

MALICIOUS

RTF / .DOC

3.7 KB First seen: 2023-03-20
MD5: cae36aa55a205f3fa31d03c4b49019bb SHA-1: 9b7cbdd7af3b5fe81143fcd054389f78239530fd SHA-256: 34e340650d0aa34556b441df91967e2d72ce67a115f1b302459e875bbe9744db
80 Risk Score

Malware Insights

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

The RTF document contains embedded OLE object data and triggers an ".objupdate" command, indicating an attempt to exploit OLE object activation. This is a common technique for delivering secondary payloads. No specific family could be identified, and no further IOCs were extracted from the static analysis.

Heuristics 3

  • \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
  • Embedded OLE object medium RTF_OBJEMB
    RTF contains \objemb — embedded OLE object

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off0000007f.bin
2bc16e316e6ce00753f1665c91c6595959cb5b007622ae272866b47419b81984
rtf-objdata-decoded RTF \objdata at offset 0x7F 1810 bytes