Analysis
- max time kernel
150s - max time network
153s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260618-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260618-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
29/06/2026, 13:32
Static task
static1
Behavioral task
behavioral1
Sample
2026-06-26_a1be8d65e1ee9d7ae2e171766cfba636_amadey_elex_njrat_remcos_rhadamanthys_smoke-loader_stealc.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral2
Sample
2026-06-26_a1be8d65e1ee9d7ae2e171766cfba636_amadey_elex_njrat_remcos_rhadamanthys_smoke-loader_stealc.exe
Resource
win11ltsc2024-20260618-en
General
- Target 2026-06-26_a1be8d65e1ee9d7ae2e171766cfba636_amadey_elex_njrat_remcos_rhadamanthys_smoke-loader_stealc.exe
- Size 11.0MB
- Sample260629-qsx23aev7x
- SHA256 a9b0936429ecee59145d9eddb8524dbe2bf04549326ea4d91d51fd12e42eae18
- MD5 a1be8d65e1ee9d7ae2e171766cfba636
- SHA1 f52b9b5bd4ed08b264ec21f2da447904bc9603f2
- SHA512 f7b6fb34dd306db7aebb0b33f550403d0a15d402ce1a6b92671772637db5b7dd8dccc9f62c344b3a90081e77db2aca3af2f9f2e6ea3caec124ef0054eddee5b9
- SSDEEP 6144:+Izw8mFAdhAtKlQXRbeoVp59Sqer5+nDFoGCCCCCCCCCCCCCCCCCCCCCCCCCCCCC:JEidhAglQhyupLer5+nZo
- TLSH T14AC6851541F80D57DA66BE34757F1B1FCCE9140A702EB7092094F1AEFAB9993C82A372
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Extracted
-
tofsee
-
vanaheim.cn
-
jotunheim.name
Signatures
- Windows security bypass 2 TTPs 1 IoCs
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\efyaqcfu = "0" svchost.exe - Modifies Windows Firewall 2 TTPs 1 IoCs
pid Process 2740 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\efyaqcfu\ImagePath = "C:\\Windows\\SysWOW64\\efyaqcfu\\gafdybya.exe" svchost.exe - Creates new service(s) 2 TTPs
- Deletes itself 1 IoCs
pid Process 1336 svchost.exe - Executes dropped EXE 1 IoCs
pid Process 2620 gafdybya.exe - Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 2620 set thread context of 1336 2620 gafdybya.exe 104 - Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.
pid Process 5788 sc.exe 1292 sc.exe 1532 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 4548 2620 WerFault.exe 103 432 3500 WerFault.exe 91 - 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 sc.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2026-06-26_a1be8d65e1ee9d7ae2e171766cfba636_amadey_elex_njrat_remcos_rhadamanthys_smoke-loader_stealc.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 gafdybya.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language netsh.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language svchost.exe - Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 3500 wrote to memory of 4760 3500 2026-06-26_a1be8d65e1ee9d7ae2e171766cfba636_amadey_elex_njrat_remcos_rhadamanthys_smoke-loader_stealc.exe 92 PID 3500 wrote to memory of 1388 3500 2026-06-26_a1be8d65e1ee9d7ae2e171766cfba636_amadey_elex_njrat_remcos_rhadamanthys_smoke-loader_stealc.exe 94 PID 3500 wrote to memory of 5788 3500 2026-06-26_a1be8d65e1ee9d7ae2e171766cfba636_amadey_elex_njrat_remcos_rhadamanthys_smoke-loader_stealc.exe 96 PID 3500 wrote to memory of 1292 3500 2026-06-26_a1be8d65e1ee9d7ae2e171766cfba636_amadey_elex_njrat_remcos_rhadamanthys_smoke-loader_stealc.exe 99 PID 3500 wrote to memory of 1532 3500 2026-06-26_a1be8d65e1ee9d7ae2e171766cfba636_amadey_elex_njrat_remcos_rhadamanthys_smoke-loader_stealc.exe 101 PID 2620 wrote to memory of 1336 2620 gafdybya.exe 104 PID 2620 wrote to memory of 1336 2620 gafdybya.exe 104 PID 3500 wrote to memory of 2740 3500 2026-06-26_a1be8d65e1ee9d7ae2e171766cfba636_amadey_elex_njrat_remcos_rhadamanthys_smoke-loader_stealc.exe 108
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-06-26_a1be8d65e1ee9d7ae2e171766cfba636_amadey_elex_njrat_remcos_rhadamanthys_smoke-loader_stealc.exe"C:\Users\Admin\AppData\Local\Temp\2026-06-26_a1be8d65e1ee9d7ae2e171766cfba636_amadey_elex_njrat_remcos_rhadamanthys_smoke-loader_stealc.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3500 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\efyaqcfu\2⤵
- System Location Discovery: System Language Discovery
PID:4760
-
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gafdybya.exe" C:\Windows\SysWOW64\efyaqcfu\2⤵
- System Location Discovery: System Language Discovery
PID:1388
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C:\Windows\SysWOW64\sc.exe"C:\Windows\System32\sc.exe" create efyaqcfu binPath= "C:\Windows\SysWOW64\efyaqcfu\gafdybya.exe /d\"C:\Users\Admin\AppData\Local\Temp\2026-06-26_a1be8d65e1ee9d7ae2e171766cfba636_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:5788
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C:\Windows\SysWOW64\sc.exe"C:\Windows\System32\sc.exe" description efyaqcfu "wifi internet conection"2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:1292
-
-
C:\Windows\SysWOW64\sc.exe"C:\Windows\System32\sc.exe" start efyaqcfu2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:1532
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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:2740
-
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3500 -s 8242⤵
- Program crash
PID:432
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C:\Windows\SysWOW64\efyaqcfu\gafdybya.exeC:\Windows\SysWOW64\efyaqcfu\gafdybya.exe /d"C:\Users\Admin\AppData\Local\Temp\2026-06-26_a1be8d65e1ee9d7ae2e171766cfba636_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:2620 -
C:\Windows\SysWOW64\svchost.exesvchost.exe2⤵
- Windows security bypass
- Sets service image path in registry
- Deletes itself
- System Location Discovery: System Language Discovery
PID:1336
-
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2620 -s 5922⤵
- Program crash
PID:4548
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 2620 -ip 26201⤵PID:6728
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 624 -p 3500 -ip 35001⤵PID:4696
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
2Disable or Modify System Firewall
1Disable or Modify Tools
1Modify Registry
2Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\gafdybya.exe
- Size 11.5MB
- SHA256 aaf7ad2f3a497a739d182a5ff94be67c1f867538350dc13d046ac2fda1a5a00c
- MD5 7cdfafe109afa3192a66e93051864bbc
- SHA1 39210d725a4b253b333a8730c0f85567a14b6fc6
- SHA512 62d96ee2a023f36352e97fcc2717431248ddc0a6d8e0af1998a8b5ac6a8a04e855ebacd34849391db9a75f0d04e90708c2dff5cec271d4fdc2a3443106a43052
- SSDEEP 6144:LIzw8mFAdhAtKlQXRbeoVp59Sqer5+nDFoGCCCCCCCCCCCCCCCCCCCCCCCCCCCCi:UEidhAglQhyupLer5+nZo
- TLSH T14FC6851541F80D57DA66BE34757F1B1FCCE9140A702EB7092094F1AEFAB9993C82A372
- MD5 SHA1 SHA512 SSDEEP TLSH