Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 5f9e0d7893d96dd0…

MALICIOUS

RTF / .DOC

87.3 KB
MD5: fbc41146754cd9ff3511533fce87c748 SHA-1: 3fefc7cbc6392a4aecb92ab6e68f10a5268d107c SHA-256: 5f9e0d7893d96dd00277ee6398b7e0faaa977b30a74b666142c8323838ffa247
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 a vulnerability for client execution. The presence of embedded OLE objects suggests the document is designed to deliver a secondary payload upon opening. Without further script or body content, the exact nature of the payload remains unknown, but the exploit vector is clear.

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_off00002080.bin
d2706c80e01e2194053d75df10981731ae93699d6b9e84388e72ff1b438312e0
rtf-objdata-decoded RTF \objdata at offset 0x2080 1498 bytes