Malicious RTF — malware analysis report

Static analysis result for SHA-256 3b581601796d4459…

MALICIOUS

RTF

20.6 KB
MD5: 6c4a4577b05acbeb2d7daecf27658d03 SHA-1: 609fea5345fc11357c1d2dde6b33ac8db1d8b0f3 SHA-256: 3b581601796d4459571b4079419ea4e33065675c4dfb309877bace18fc8d1f63
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious File

The RTF document contains embedded OLE objects, indicated by the RTF_OBJDATA and RTF_OLE10NATIVE_STREAM heuristics. The RTF_OBJUPDATE heuristic suggests that these objects are designed to be activated, likely to execute embedded code or download additional payloads. No document body text or scripts were extracted, limiting the ability to determine the exact nature of the payload or its specific family. The confidence is high due to the clear indicators of OLE object abuse for malicious purposes.

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 2 \objdata section(s) — embedded OLE objects

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off00000691.bin
224ff12b775471dd30b9dc3866f4778c66a76bf35f15164bcde6cc0dcb913a71
rtf-objdata-decoded RTF \objdata at offset 0x691 4178 bytes