Analysis
- max time kernel
149s - max time network
151s - platform
windows11-21h2_x64 - resource
win11-20260513-en - resource tags
arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows - submitted
29/05/2026, 03:53
Static task
static1
Behavioral task
behavioral1
Sample
2026-05-29_f558f5d8b2b556748f7bcd320a020a82_amadey_elex_njrat_remcos_rhadamanthys_smoke-loader_stealc.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral2
Sample
2026-05-29_f558f5d8b2b556748f7bcd320a020a82_amadey_elex_njrat_remcos_rhadamanthys_smoke-loader_stealc.exe
Resource
win11-20260513-en
General
- Target 2026-05-29_f558f5d8b2b556748f7bcd320a020a82_amadey_elex_njrat_remcos_rhadamanthys_smoke-loader_stealc.exe
- Size 14.3MB
- Sample260529-eftnbscv81
- SHA256 9b9788dee2de6cd631e5aae62644f7f787fe59e1995ccf54e0ac2d0c9c6e72e8
- MD5 f558f5d8b2b556748f7bcd320a020a82
- SHA1 7d49b107d24a99ce8577a836a8784d81c14714ad
- SHA512 032342fcd150b1ac4954ebb49438f0118035a4d5ff130fcafc997195eeaec69dfc9fb62d4a9f95d4a68707dee22191a9d446396dba07a9eae49a5c5d19a77cda
- SSDEEP 6144:3Izw8mFAdhAtKlQXRbeoVp59Sqer5+nDFoGCCCCCCCCCCCCCCCCCCCCCCCCCCCCi:YEidhAglQhyupLer5+nZo
- TLSH T1E2E6851541F80D57DA66BE34757F1B1FCCE9140A702EB7092094F1AEFAB9993C82A372
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Extracted
-
tofsee
-
vanaheim.cn
-
jotunheim.name
Signatures
- Modifies Windows Firewall 2 TTPs 1 IoCs
pid Process 4036 netsh.exe - Sets service image path in registry 3 TTPs 1 IoCs
This determines the executable launched when a service starts. It can be used to establish persistence.
description ioc Process Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\eximdjrr\ImagePath = "C:\\Windows\\SysWOW64\\eximdjrr\\xnnkwiyw.exe" svchost.exe - Creates new service(s) 2 TTPs
- Deletes itself 1 IoCs
pid Process 3764 svchost.exe - Executes dropped EXE 1 IoCs
pid Process 1800 xnnkwiyw.exe - Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 1800 set thread context of 3764 1800 xnnkwiyw.exe 94 - Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.
pid Process 4200 sc.exe 3624 sc.exe 5012 sc.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs
Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.
description ioc Process Key opened \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh netsh.exe Key queried \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh netsh.exe Key value enumerated \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh netsh.exe - Program crash 2 IoCs
pid pid_target Process procid_target 4476 1800 WerFault.exe 93 3524 4908 WerFault.exe 80 - System Location Discovery: System Language Discovery 1 TTPs 9 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language sc.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language xnnkwiyw.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language svchost.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language sc.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language sc.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language netsh.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2026-05-29_f558f5d8b2b556748f7bcd320a020a82_amadey_elex_njrat_remcos_rhadamanthys_smoke-loader_stealc.exe - Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 4908 wrote to memory of 3212 4908 2026-05-29_f558f5d8b2b556748f7bcd320a020a82_amadey_elex_njrat_remcos_rhadamanthys_smoke-loader_stealc.exe 81 PID 4908 wrote to memory of 3164 4908 2026-05-29_f558f5d8b2b556748f7bcd320a020a82_amadey_elex_njrat_remcos_rhadamanthys_smoke-loader_stealc.exe 84 PID 4908 wrote to memory of 4200 4908 2026-05-29_f558f5d8b2b556748f7bcd320a020a82_amadey_elex_njrat_remcos_rhadamanthys_smoke-loader_stealc.exe 86 PID 4908 wrote to memory of 3624 4908 2026-05-29_f558f5d8b2b556748f7bcd320a020a82_amadey_elex_njrat_remcos_rhadamanthys_smoke-loader_stealc.exe 89 PID 4908 wrote to memory of 5012 4908 2026-05-29_f558f5d8b2b556748f7bcd320a020a82_amadey_elex_njrat_remcos_rhadamanthys_smoke-loader_stealc.exe 91 PID 1800 wrote to memory of 3764 1800 xnnkwiyw.exe 94 PID 1800 wrote to memory of 3764 1800 xnnkwiyw.exe 94 PID 4908 wrote to memory of 4036 4908 2026-05-29_f558f5d8b2b556748f7bcd320a020a82_amadey_elex_njrat_remcos_rhadamanthys_smoke-loader_stealc.exe 98
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-05-29_f558f5d8b2b556748f7bcd320a020a82_amadey_elex_njrat_remcos_rhadamanthys_smoke-loader_stealc.exe"C:\Users\Admin\AppData\Local\Temp\2026-05-29_f558f5d8b2b556748f7bcd320a020a82_amadey_elex_njrat_remcos_rhadamanthys_smoke-loader_stealc.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4908 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\eximdjrr\2⤵
- System Location Discovery: System Language Discovery
PID:3212
-
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\xnnkwiyw.exe" C:\Windows\SysWOW64\eximdjrr\2⤵
- System Location Discovery: System Language Discovery
PID:3164
-
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C:\Windows\SysWOW64\sc.exe"C:\Windows\System32\sc.exe" create eximdjrr binPath= "C:\Windows\SysWOW64\eximdjrr\xnnkwiyw.exe /d\"C:\Users\Admin\AppData\Local\Temp\2026-05-29_f558f5d8b2b556748f7bcd320a020a82_amadey_elex_njrat_remcos_rhadamanthys_smoke-loader_stealc.exe\"" type= own start= auto DisplayName= "wifi support"2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:4200
-
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C:\Windows\SysWOW64\sc.exe"C:\Windows\System32\sc.exe" description eximdjrr "wifi internet conection"2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:3624
-
-
C:\Windows\SysWOW64\sc.exe"C:\Windows\System32\sc.exe" start eximdjrr2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:5012
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C:\Windows\SysWOW64\netsh.exe"C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="C:\Windows\SysWOW64\svchost.exe" enable=yes>nul2⤵
- Modifies Windows Firewall
- Event Triggered Execution: Netsh Helper DLL
- System Location Discovery: System Language Discovery
PID:4036
-
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4908 -s 10962⤵
- Program crash
PID:3524
-
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C:\Windows\SysWOW64\eximdjrr\xnnkwiyw.exeC:\Windows\SysWOW64\eximdjrr\xnnkwiyw.exe /d"C:\Users\Admin\AppData\Local\Temp\2026-05-29_f558f5d8b2b556748f7bcd320a020a82_amadey_elex_njrat_remcos_rhadamanthys_smoke-loader_stealc.exe"1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1800 -
C:\Windows\SysWOW64\svchost.exesvchost.exe2⤵
- Sets service image path in registry
- Deletes itself
- System Location Discovery: System Language Discovery
PID:3764
-
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1800 -s 5602⤵
- Program crash
PID:4476
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 1800 -ip 18001⤵PID:3620
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 4908 -ip 49081⤵PID:2096
Network
MITRE ATT&CK Enterprise v16
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
3Windows Service
3Event Triggered Execution
1Netsh Helper DLL
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
3Windows Service
3Event Triggered Execution
1Netsh Helper DLL
1Defense Evasion
Impair Defenses
1Disable or Modify System Firewall
1Modify Registry
1Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\xnnkwiyw.exe
- Size 12.9MB
- SHA256 5dd51518f4c6f06f5e144f2f497538e6d80da49caf1e2998d7cbe1a275a06651
- MD5 0d9d7c09cea6951a8ab254dc60f84b53
- SHA1 62bfc6db79aa9da1d025083773aff2806bd0033b
- SHA512 afd2f0c111f5918ae93f3a8daa5f62bb39233135dc26e6d38ce8ded964b2382a96793af5dfd4468f3c076e3819f6512d321ee25d07910f1a8293bfa57da7e33d
- SSDEEP 6144:VIzw8mFAdhAtKlQXRbeoVp59Sqer5+nDFoGCCCCCCCCCCCCCCCCCCCCCCCCCCCCC:yEidhAglQhyupLer5+nZo
- TLSH T1A8D6851541F80D57DA66BE34757F1B1FCCE9140A702EB7092094F1AEFAB9993C82A372
- MD5 SHA1 SHA512 SSDEEP TLSH