Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 5c91dca4eb76ea68…

MALICIOUS

RTF / .DOC

7.5 KB First seen: 2022-06-07
MD5: 373c9ed869227bbf3b9845c102a1ebe9 SHA-1: 1a639da731d189f129660b23f84487acb6dcdd8b SHA-256: 5c91dca4eb76ea685e7b620eee8f6f42927884f33bb241bf6afb78c787535e50
60 Risk Score

Malware Insights

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

The RTF document contains OLE object data and an \objupdate directive, indicating an attempt to exploit OLE activation for code execution. This is a common technique for delivering secondary payloads. No document body or scripts were extracted, limiting further analysis of the specific payload or lure.

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 2 \objdata section(s) — embedded OLE objects

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off000009ca.bin
5382c87005bcd8fe0703f3a6f519c733838c1d8948703febb73a55af1f2139b3
rtf-objdata-decoded RTF \objdata at offset 0x9CA 1561 bytes