Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 e1f20e3e33c4f926…

MALICIOUS

RTF / .DOC

341.2 KB
MD5: c484bc2f6e48cfd29867995ef33206bf SHA-1: 25c61f66735263afe2565ad73cda68b70baf44fe SHA-256: e1f20e3e33c4f9269222e7e4c241b3c06428e7f1d8288750965327ccb103aa37
180 Risk Score

Malware Insights

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

The RTF document contains multiple embedded OLE objects, with high-confidence heuristics indicating automatic linking and update triggers. This suggests the document is designed to exploit OLE object activation to execute arbitrary code. The 'SE_ENABLE_LURE' heuristic further indicates the document likely prompts the user to enable content, a common lure for macro-based malware delivery.

Heuristics 6

  • Composite Moniker in RTF OLE object high CVE related RTF_COMPOSITE_MONIKER_RELATED
    RTF contains Composite Moniker CLSID in OLE object context, but no nearby scriptlet/SCT payload was confirmed. Treat as related moniker attack-surface evidence rather than proof of CVE-2017-8570 exploitation.
  • 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 3 \objdata section(s) — embedded OLE objects
  • Embedded OLE object medium RTF_OBJEMB
    RTF contains \objemb — embedded OLE object
  • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off00000969.bin
e65b15e7d4c619240d4a2d49e1418cd84a2d54f4139c2333c0ee53c8db681aa6		 rtf-objdata-decoded RTF \objdata at offset 0x969 75716 bytes
objdata_01_off0002713a.bin
f4c761490fd63fc4aa791746a9a2b588dafd9e2c764f57f0c85377b99ef07062		 rtf-objdata-decoded RTF \objdata at offset 0x2713A 2632 bytes
objdata_02_off000286dd.bin
44deae4627fee3c44f54d5bd10477ec2e17f4c08135f08e2417832e36d10d037		 rtf-objdata-decoded RTF \objdata at offset 0x286DD 12297 bytes

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