MALICIOUS
242
Risk Score
Malware Insights
MITRE ATT&CK
T1204.002 Malicious File Execution: Malicious File
T1059.001 Command and Scripting Interpreter: PowerShell
The file is an RTF document that leverages the CVE-2017-8570 vulnerability. This exploit is designed to activate an embedded OLE object, which in turn downloads and executes a JavaScript file from the URL http://iraniansk.com/taskmgr.js. The presence of multiple high and critical heuristic firings related to OLE object activation and the specific CVE strongly indicates this malicious behavior.
Heuristics 7
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CVE-2017-8570 (Composite Moniker + scriptlet payload) critical CVE likely CVE_2017_8570RTF contains Composite Moniker CLSID together with nearby scriptlet/SCT payload evidence, matching the CVE-2017-8570 exploit shape.
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ClamAV: Rtf.Exploit.CVE_2017_8570-6596183-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Rtf.Exploit.CVE_2017_8570-6596183-0
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Automatically linked OLE object high RTF_OBJAUTLINKRTF contains \objautlink — an automatically linked OLE object surface that can be updated or activated when Word opens the document.
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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 2 \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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Embedded URL info EMBEDDED_URLOne or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.URL http://iraniansk.com/taskmgr.js
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
objdata_00_off00000054.bin2c050c80d09bfc9cb03b1a9ed7683ce1fc1f213a5b5c69070de69845d706b54e |
rtf-objdata-decoded | RTF \objdata at offset 0x54 | 1955 bytes |
objdata_01_off0000100f.bin4855cf13d63f65d3041488b2845dc9828f35068a8563ee7a5cc55aefea602788 |
rtf-objdata-decoded | RTF \objdata at offset 0x100F | 2633 bytes |
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