Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 6222cb86d552b27c…

MALICIOUS

RTF / .DOC

739.9 KB
MD5: 70ca4da4999e3a0c6255c2608cea91c1 SHA-1: e66fe0890d9487d3793f099d0c6752cef725d800 SHA-256: 6222cb86d552b27cabb9f54dda289fce3ab253862c6ab764d55b14a1f44b1ca0
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File T1059.005 Visual Basic

The RTF document contains OLE object data and heuristics indicate that an automatically linked OLE object is being updated, suggesting an attempt to execute embedded code. The document body includes a lure instructing the user to 'Enable editing' and implies the need to enable macros, a common tactic for macro-based malware droppers. The presence of RTF_OBJAUTLINK and RTF_OBJUPDATE heuristics strongly suggests the execution of embedded OLE objects, likely containing malicious macros.

Heuristics 4

  • 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 1 \objdata section(s) — embedded OLE objects
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off00012622.bin
2c8263017ee20bb1d7f1cb066badcdea3f2eab2df8dc33c126a181a61bd0ac21
rtf-objdata-decoded RTF \objdata at offset 0x12622 4267 bytes