Malicious RTF — malware analysis report

Static analysis result for SHA-256 a14ebf3582969805…

MALICIOUS

RTF

19.5 KB First seen: 2022-10-20
MD5: 3396849d4281f63ef3eaad9579946df5 SHA-1: c67e98e4dfd462b348e7a9b7d34142feddf5792f SHA-256: a14ebf35829698051f8fa5de3887b78c1827cccd3f298d04ffdaebb9ffaa50a0
100 Risk Score

Malware Insights

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

The RTF document contains OLE object data with a high entropy, indicating embedded executable content. The presence of RTF_OBJDATA and RTF_OBJUPDATE heuristics strongly suggests that the embedded OLE object is designed to be activated, likely to download and execute a secondary payload. No document body or script content was available for further analysis.

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_off000012ba.bin
cd7cb07501c201f7f050e44240376d512536e98da0a5d531936c4b6801f9f276
rtf-objdata-decoded RTF \objdata at offset 0x12BA 4184 bytes