Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 c066ca53d17dad7c…

MALICIOUS

RTF / .DOC

22.5 KB
MD5: 93de92d862b920389205f8528d921347 SHA-1: 7ec853e114c01897f64d1f68aa988508644d3782 SHA-256: c066ca53d17dad7c228fe6ebf803197ee33ce945bbc00a2c0c10eb2b7c11b819
100 Risk Score

Malware Insights

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

The file is an RTF document exhibiting high-confidence heuristics for OLE object auto-linking and update, indicating an attempt to exploit OLE activation. The presence of embedded OLE object data further supports this. While no scripts were extracted, the OLE object activation is a known technique for delivering and executing malicious payloads. The document body is heavily obfuscated and does not provide clear textual lures.

Heuristics 3

  • Automatically linked OLE object high RTF_OBJAUTLINK
    RTF contains \objautlink — an automatically linked OLE object surface that can be updated or activated when Word opens the document.
  • \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_off0000207d.bin
f6796fe8355a62c91ca57881b958d874a2263a34b2477b92fbec4db080c43d03
rtf-objdata-decoded RTF \objdata at offset 0x207D 1925 bytes