Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 9053ba7d545be692…

MALICIOUS

RTF / .DOC

17.1 KB First seen: 2022-08-05
MD5: 4555e076ee5f44a8125fa3e250a1a230 SHA-1: 1e9a590b79cfc5e0ca1f851245f187a0d223ec5e SHA-256: 9053ba7d545be692e4ad58476a03d04c009293346df0644ae1b5ce24940b368f
100 Risk Score

Malware Insights

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

The RTF document contains OLE object data and uses \objupdate to force activation, indicating an attempt to exploit OLE vulnerabilities. The presence of embedded OLE objects, specifically an Ole10Native stream, suggests the file is designed to deliver and execute a secondary payload. No document body or script content was available for further analysis, limiting the ability to determine the exact nature of the payload.

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_off0000070d.bin
eee4c6ef61e562a6300c959d5b6da27ea30c073c5ce39dbbabdf8d49933f1a9d
rtf-objdata-decoded RTF \objdata at offset 0x70D 3762 bytes