MALICIOUS
220
Risk Score
Malware Insights
MITRE ATT&CK
T1204.002 User Execution: Malicious File
T1559.001 Component Object Model Hijacking
The RTF document contains OLE object data and triggers an ".objupdate" directive, indicative of an attempt to exploit CVE-2017-8570. The document body explicitly prompts the user to 'Enable Editing', a common lure to bypass macro security settings and initiate the exploit.
Heuristics 7
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Composite Moniker — CVE-2017-8570 (drops SCT script) critical CVE_2017_8570RTF \objdata decodes to OLE data containing the Composite Moniker — CVE-2017-8570 (drops SCT script) CLSID — the vulnerable control/moniker is embedded directly in the document's object stream, the delivery shape of this exploit. RTF objects auto-render when Word opens the file.
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Composite Moniker in RTF OLE object high RTF_COMPOSITE_MONIKER_RELATEDRTF 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.
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\objupdate forces OLE activation high RTF_OBJUPDATERTF contains \objupdate — forces automatic OLE object instantiation when the document is opened, bypassing user interaction. Almost exclusively seen in Equation Editor exploit documents.
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OLE object data medium RTF_OBJDATARTF contains 3 \objdata section(s) — embedded OLE objects
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Embedded OLE object medium RTF_OBJEMBRTF contains \objemb — embedded OLE object
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Macro/content-enable lure medium SE_ENABLE_LUREDocument instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
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Suspicious extracted artifact medium EXTRACTED_FILE_STATIC_TRIAGEOne or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
objdata_00_off00000ba4.binaddb77a2969aeef83ddad9e94165256e0073d8ad575f811955606ce8ab7b3ec7 |
rtf-objdata-decoded | RTF \objdata at offset 0xBA4 | 18720 bytes |
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Detection
ClamAV:
No threats found
Obfuscation or payload:
likely
Carved artifact contains 1 shell/COM execution token(s).
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objdata_01_off0000a45c.bin3c97121fe02f90da16cb2983b3ae893ea40de52f15d26984fbdbae19aab20ebc |
rtf-objdata-decoded | RTF \objdata at offset 0xA45C | 2632 bytes |
objdata_02_off0000b9ff.bin142dc43284d9abe994719f8fb67bc4c04bfc3f07528a1a66b0bad7e552ee8e78 |
rtf-objdata-decoded | RTF \objdata at offset 0xB9FF | 12297 bytes |
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