Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 c179c8f5eeaa25dd…

MALICIOUS

RTF / .DOC

3.2 KB First seen: 2023-03-09
MD5: 331613eb4081502b60af476b4c21bce5 SHA-1: 853b190797563d6caadad5b7cf15beee389be6a5 SHA-256: c179c8f5eeaa25ddf10010771c8d4691b8821dfbf1447ff52fd8ca0552db91be
60 Risk Score

Malware Insights

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

The sample is an RTF document containing an embedded OLE object, indicated by the RTF_OBJDATA heuristic. The RTF_OBJUPDATE heuristic suggests that this object is configured to automatically activate, which is a common technique for exploiting vulnerabilities and executing embedded code. The specific exploit targeted is not detailed, but the presence of these heuristics strongly points to a malicious document designed to deliver a payload upon opening.

Heuristics 2

  • \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_off0000007e.bin
3074ecc1d78a03e7216ae37aa6e02aceb2d384278175fd4d0900731c8c12b648
rtf-objdata-decoded RTF \objdata at offset 0x7E 1521 bytes