Malicious RTF — malware analysis report

Static analysis result for SHA-256 061eab00aca9bb4d…

MALICIOUS

RTF

25.0 KB First seen: 2023-06-08
MD5: e230816a29bb8af0b5f24adfbe5eff62 SHA-1: 841fb495cc824fb043d1be3f033326294745dfff SHA-256: 061eab00aca9bb4dc4a164c23f0ec24b805eaff6bd597b45601bde2958744ca3
100 Risk Score

Malware Insights

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

The RTF file contains OLE object data and an \objupdate directive, indicating it's designed to automatically activate embedded objects. This is a common technique for delivering malicious payloads, often via spearphishing. No specific family could be identified, and no document body or scripts were 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_off00001095.bin
f8c8ecf8d962b8fc4ddcc873ffc95f40347a46c170a834f217e9fe6e116d2509
rtf-objdata-decoded RTF \objdata at offset 0x1095 4188 bytes