Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 10b714a1b7185848…

MALICIOUS

RTF / .DOC

77.1 KB
MD5: 993f5ca48cb50b9371e7ab9d9b9d3cbe SHA-1: 597cb776684503389811a670719f2619cacd59c6 SHA-256: 10b714a1b718584830046bd521c7968b9e32ee301ad3b0712ceda6c0385e8846
100 Risk Score

Malware Insights

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

The RTF document contains embedded OLE objects, indicated by the RTF_OBJDATA heuristic. The RTF_OBJUPDATE and RTF_OLE10NATIVE_STREAM heuristics suggest that these objects are designed to be activated, likely exploiting a vulnerability to execute code. The presence of an embedded OLE object strongly implies a spearphishing attachment vector. No specific family could be identified.

Heuristics 3

  • Ole10Native stream in RTF OLE object high CVE related RTF_OLE10NATIVE_STREAM
    RTF contains an embedded OLE object with an Ole10Native stream. This is a strong payload-container signal and is related to Word/OLE exploit delivery, but it is not specific enough on its own to assign a CVE.
  • \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_off00001c35.bin
0cd8e54e67bd1a64bf05eb74e350bfad274daf4fecaef232a0efa9b84b8e37f4
rtf-objdata-decoded RTF \objdata at offset 0x1C35 4171 bytes