MALICIOUS — jrunscript.exe

MALICIOUS — jrunscript.exe is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (94/100), attributed to the Container family. 8 of 55 detection engines flagged it.

Identification

• SHA-256: 2901d723f7258b9606ba10eae0ee52ca6853e81660a2df969e2d4faf6a223b17
• SHA-1: 0aaab09e222512412c454e8521b2951402afac5e
• MD5: 20d34424affac6a1e6dd50f8f06dd5ca
• imphash: 38aa7c2ff6ef0e48a9520d6702d08df4
• ssdeep: 6144:TeEriRsAxH/K2jye9POln4RUOeinwl5gaO5W2cRFAx5G3TGxivp:igixH/dpPOV4uOeinggFQF+5Fkp
• TLSH: T1EB4CAFB1021A1131E9FABEB4A01CCEBC90637845B0782F5E9147DB5D9098AE3DCFE591
• Submitted as: jrunscript.exe
• File type: pe · Size: 517875 bytes
• Verdict: malicious (94/100) · Family: Container

Detections (8 of 55 engines)

• MalwareAnalyser heuristics (entropy/packer): UPX
• ClamAV (daily): Win.Trojan.Agent-6943819-1
• YARA: delivr.to detections: DLV_ISO_IMG_Container_Lure
• YARA: JPCERT/CC: JPCERT_HUILoader_PlugX_SideLoad
• Microsoft Defender: Virus:Win32/Sivis.A
• Emsisoft (Emergency Kit): Win32.Sivis.A
• Trellix Stinger (McAfee): PolyPatch-UPX
• Kaspersky (KVRT): Virus.Win32.Agent.es

Why this verdict

The malicious score of 94/100 is the fusion of 5 weighted signals:

• ClamAV (daily) flagged Win.Trojan.Agent-6943819-1 (rule Win.Trojan.Agent-6943819-1) - engine signal, weight 0.90, confidence 0.95
• YARA: delivr.to detections flagged DLV_ISO_IMG_Container_Lure (rule DLV_ISO_IMG_Container_Lure) - engine signal, weight 0.35, confidence 0.70
• YARA: JPCERT/CC flagged JPCERT_HUILoader_PlugX_SideLoad (rule JPCERT_HUILoader_PlugX_SideLoad) - engine signal, weight 0.35, confidence 0.70
• Embedded network infrastructure: http://creativecommons.org/publicdomain/zero/1.0/, https://d.symcb.com/rpa0, http://s.symcb.com/universal-root.crl0 - static signal, weight 0.35, confidence 0.60
• Packing/obfuscation: UPX - static signal, weight 0.25, confidence 0.55

Dynamic analysis

No runtime behaviour was captured for this sample, so the analysis above is static only. That is a limit of this run rather than evidence the sample does nothing.

Embedded URLs

• http://creativecommons.org/publicdomain/zero/1.0/
• http://www.adobe.com/go/reader_system_reqs_it.UnmoveFilesRimozione
• http://www.adobe.com/go/reader_system_reqs_it
• https://www.digicert.com/CPS0
• http://cacerts.digicert.com/DigiCertEVCodeSigningCA-SHA2.crt0
• http://cacerts.digicert.com/DigiCertHighAssuranceEVRootCA.crt0
• http://crl3.digicert.com/DigiCertHighAssuranceEVRootCA.crl0@
• http://crl4.digicert.com/DigiCertHighAssuranceEVRootCA.crl0
• http://www.digicert.com/ssl-cps-repository.htm0
• https://d.symcb.com/rpa0
• http://s.symcb.com/universal-root.crl0
• https://d.symcb.com/rpa0@
• http://ts-crl.ws.symantec.com/sha256-tss-ca.crl0
• http://ts-aia.ws.symantec.com/sha256-tss-ca.cer0
• http://www.microsoft.com/pki/certs/MicCodSigPCA_2010-07-06.crt0
• http://www.microsoft.com/pki/certs/MicRooCerAut_2010-06-23.crt0
• http://www.microsoft.com/windows0
• http://www.digicert.com/CPS0
• http://www.eclipse.org/0
• http://schemas.microsoft.com/SMI/2005/WindowsSettings
• http://schemas.microsoft.com/SMI/2016/WindowsSettings

Embedded domains

• creativecommons.org
• geocities.com
• www.adobe.com
• helpx.adobe.com
• www.microsoft.com
• crl3.digicert.com
• crl4.digicert.com
• www.digicert.com
• cacerts.digicert.com
• d.symcb.com
• s.symcb.com
• ts-crl.ws.symantec.com
• ts-aia.ws.symantec.com
• crl.microsoft.com
• www.eclipse.org
• schemas.microsoft.com

Embedded IP addresses

• 21.0.5.0

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report