Analysis
- max time kernel
149s - max time network
152s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
25/09/2026, 02:15
Behavioral task
behavioral1
Sample
2026-09-24_aa0fb3d55652ad37d18941b061c59cc0_amadey_cobalt-strike_elex_hijackloader_icedid_luca-stealer_njrat_vidar.exe
Resource
win10v2004-20260911-en
windows10-2004-x64
9 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-09-24_aa0fb3d55652ad37d18941b061c59cc0_amadey_cobalt-strike_elex_hijackloader_icedid_luca-stealer_njrat_vidar.exe
Resource
win11ltsc2024-20260911-en
windows11-ltsc_2024-x64
10 signatures
150 seconds
General
- Target 2026-09-24_aa0fb3d55652ad37d18941b061c59cc0_amadey_cobalt-strike_elex_hijackloader_icedid_luca-stealer_njrat_vidar.exe
- Size 6.2MB
- Sample260925-cpr5ra11c1
- SHA256 0cb84a786b29200800a486ed1169836b290d198408ec8bb2ff130575cc7797f5
- MD5 aa0fb3d55652ad37d18941b061c59cc0
- SHA1 0566b06e65d40d49e87284481bce475569516246
- SHA512 260c47b41a23ca71454ea213ac44db7b7c83e6e767886a38945b85fdbe963d49351114446aa9b8924769342b0acb40c1768e585760b67d38e3d5fd42d5a5dcfb
- SSDEEP 98304:onUm8Uyfv78HEF3rpiD0BTa3aLkBo6DjD7dJjoHjo:o18U3EFbp7B2NDjD7d9oDo
- TLSH T1D8669E22B816C178E22580B195DAABB6C8687C66077005CB6780FF366E737D72E35F71
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
Malware Config
Signatures
- Detects Fesber payload 10 IoCs
resource yara_rule behavioral2/files/0x000600000001b857-4.dat family_fesber behavioral2/files/0x000d00000001c4d9-17.dat family_fesber behavioral2/memory/1772-574-0x0000000000400000-0x000000000041B000-memory.dmp family_fesber behavioral2/memory/1772-1120-0x0000000000400000-0x000000000041B000-memory.dmp family_fesber behavioral2/memory/1772-1277-0x0000000000400000-0x000000000041B000-memory.dmp family_fesber behavioral2/memory/1772-1278-0x0000000000400000-0x000000000041B000-memory.dmp family_fesber behavioral2/memory/1772-1279-0x0000000000400000-0x000000000041B000-memory.dmp family_fesber behavioral2/memory/1772-1283-0x0000000000400000-0x000000000041B000-memory.dmp family_fesber behavioral2/memory/1772-1287-0x0000000000400000-0x000000000041B000-memory.dmp family_fesber behavioral2/memory/1772-1288-0x0000000000400000-0x000000000041B000-memory.dmp family_fesber - Modifies WinLogon for persistence 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "Explorer.exe fsb.exe" tmp240734718.exe - Executes dropped EXE 2 IoCs
pid Process 1772 tmp240734718.exe 2908 tmp240734781.exe - Drops file in System32 directory 3 IoCs
description ioc Process File created C:\Windows\SysWOW64\fsb.stb tmp240734718.exe File created C:\Windows\SysWOW64\fsb.tmp tmp240734718.exe File opened for modification C:\Windows\SysWOW64\fsb.tmp tmp240734718.exe -
resource yara_rule behavioral2/memory/3108-0-0x0000000000400000-0x000000000041F000-memory.dmp upx behavioral2/memory/3108-12-0x0000000000400000-0x000000000041F000-memory.dmp upx behavioral2/files/0x000d00000001c4d9-17.dat upx - Drops file in Program Files directory 64 IoCs
description ioc Process File created C:\Program Files\Java\jre-1.8\bin\rmid.exe tmp240734718.exe File created C:\Program Files\Microsoft Office\root\Office16\excelcnv.exe- tmp240734718.exe File created C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\DW\DW20.EXE- tmp240734718.exe File created C:\Program Files (x86)\Internet Explorer\ielowutil.exe- tmp240734718.exe File created C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\msedge.exe- tmp240734718.exe File created C:\Program Files (x86)\Microsoft\EdgeWebView\Application\122.0.2365.106\msedge.exe tmp240734718.exe File created C:\Program Files\Java\jdk-1.8\jre\bin\javaws.exe- tmp240734718.exe File created C:\Program Files\Java\jdk-1.8\jre\bin\policytool.exe tmp240734718.exe File created C:\Program Files\Microsoft Office\root\Office16\ORGCHART.EXE tmp240734718.exe File created C:\Program Files\Microsoft Office\root\Office16\SDXHelper.exe tmp240734718.exe File created C:\Program Files\Internet Explorer\ExtExport.exe- tmp240734718.exe File created C:\Program Files\Java\jre-1.8\bin\kinit.exe- tmp240734718.exe File created C:\Program Files\Microsoft Office\root\Office16\msoasb.exe tmp240734718.exe File created C:\Program Files (x86)\Common Files\Adobe\ARM\1.0\AdobeARMHelper.exe- tmp240734718.exe File created C:\Program Files (x86)\Common Files\Java\Java Update\jaureg.exe tmp240734718.exe File created C:\Program Files (x86)\Common Files\Oracle\Java\javapath\javaw.exe tmp240734718.exe File created C:\Program Files (x86)\Microsoft\EdgeWebView\Application\122.0.2365.106\notification_helper.exe tmp240734718.exe File created C:\Program Files (x86)\Microsoft\EdgeCore\122.0.2365.106\Installer\setup.exe tmp240734718.exe File created C:\Program Files (x86)\Microsoft\EdgeCore\122.0.2365.106\msedge_pwa_launcher.exe tmp240734718.exe File created C:\Program Files\Java\jdk-1.8\jre\bin\javaw.exe- tmp240734718.exe File created C:\Program Files (x86)\Microsoft\EdgeCore\122.0.2365.106\msedge_proxy.exe tmp240734718.exe File created C:\Program Files (x86)\Microsoft\EdgeCore\139.0.3405.125\elevation_service.exe tmp240734718.exe File created C:\Program Files\7-Zip\7zFM.exe tmp240734718.exe File created C:\Program Files\Common Files\microsoft shared\OFFICE16\LICLUA.EXE- tmp240734718.exe File created C:\Program Files\Java\jdk-1.8\bin\jps.exe tmp240734718.exe File created C:\Program Files\Java\jdk-1.8\bin\klist.exe tmp240734718.exe File created C:\Program Files\Java\jdk-1.8\bin\rmiregistry.exe- tmp240734718.exe File created C:\Program Files\Microsoft Office\root\Client\AppVDllSurrogate64.exe tmp240734718.exe File created C:\Program Files\Microsoft Office\root\Integration\Addons\OneDriveSetup.exe tmp240734718.exe File created C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.Mashup.Container.NetFX40.exe tmp240734718.exe File created C:\Program Files\Common Files\microsoft shared\ink\TabTip.exe tmp240734718.exe File created C:\Program Files\Microsoft Office\root\Office16\CLVIEW.EXE tmp240734718.exe File created C:\Program Files\Microsoft Office\root\Office16\msoadfsb.exe tmp240734718.exe File created C:\Program Files\Microsoft Office\root\Office16\msoev.exe- tmp240734718.exe File created C:\Program Files\Mozilla Firefox\maintenanceservice_installer.exe tmp240734718.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\Eula.exe tmp240734718.exe File created C:\Program Files (x86)\Common Files\Oracle\Java\javapath_target_116093\javaws.exe- tmp240734718.exe File created C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\elevation_service.exe tmp240734718.exe File created C:\Program Files\Microsoft Office\root\Office16\msoia.exe- tmp240734718.exe File created C:\Program Files\Microsoft Office\root\Office16\ORGCHART.EXE- tmp240734718.exe File created C:\Program Files\VideoLAN\VLC\uninstall.exe tmp240734718.exe File created C:\Program Files (x86)\Microsoft\EdgeCore\122.0.2365.106\msedge.exe tmp240734718.exe File created C:\Program Files (x86)\Microsoft\EdgeCore\139.0.3405.125\msedge.exe tmp240734718.exe File created C:\Program Files\Java\jdk-1.8\bin\jhat.exe tmp240734718.exe File created C:\Program Files\Java\jdk-1.8\bin\tnameserv.exe tmp240734718.exe File created C:\Program Files\Microsoft Office\root\Office16\ONENOTE.EXE- tmp240734718.exe File created C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\AppSharingHookController.exe tmp240734718.exe File created C:\Program Files (x86)\Common Files\Adobe\ARM\1.0\AdobeARM.exe- tmp240734718.exe File created C:\Program Files (x86)\Microsoft\EdgeCore\139.0.3405.125\BHO\ie_to_edge_stub.exe tmp240734718.exe File created C:\Program Files\Java\jdk-1.8\bin\jdb.exe tmp240734718.exe File created C:\Program Files\Internet Explorer\iediagcmd.exe tmp240734718.exe File created C:\Program Files\Java\jdk-1.8\bin\jcmd.exe- tmp240734718.exe File created C:\Program Files\Java\jdk-1.8\jre\bin\keytool.exe tmp240734718.exe File created C:\Program Files (x86)\Microsoft\EdgeUpdate_disable\MicrosoftEdgeUpdate.exe tmp240734718.exe File created C:\Program Files\Java\jre-1.8\bin\rmiregistry.exe- tmp240734718.exe File created C:\Program Files\Microsoft Office\Office16\OSPPREARM.EXE tmp240734718.exe File created C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\DW\DW20.EXE tmp240734718.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroRd32.exe- tmp240734718.exe File created C:\Program Files (x86)\Microsoft\EdgeUpdate_disable\1.3.195.65\MicrosoftEdgeUpdateBroker.exe- tmp240734718.exe File created C:\Program Files\Java\jre-1.8\bin\orbd.exe tmp240734718.exe File created C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\notification_helper.exe tmp240734718.exe File created C:\Program Files (x86)\Microsoft\Edge\Application\msedge_proxy.exe- tmp240734718.exe File created C:\Program Files\7-Zip\7zFM.exe- tmp240734718.exe File created C:\Program Files\Internet Explorer\iexplore.exe- tmp240734718.exe - System Location Discovery: System Language Discovery 1 TTPs 2 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 2026-09-24_aa0fb3d55652ad37d18941b061c59cc0_amadey_cobalt-strike_elex_hijackloader_icedid_luca-stealer_njrat_vidar.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language tmp240734718.exe - Suspicious behavior: LoadsDriver 1 IoCs
pid 4 - Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 3108 wrote to memory of 1772 3108 2026-09-24_aa0fb3d55652ad37d18941b061c59cc0_amadey_cobalt-strike_elex_hijackloader_icedid_luca-stealer_njrat_vidar.exe 89 PID 3108 wrote to memory of 2908 3108 2026-09-24_aa0fb3d55652ad37d18941b061c59cc0_amadey_cobalt-strike_elex_hijackloader_icedid_luca-stealer_njrat_vidar.exe 90
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-09-24_aa0fb3d55652ad37d18941b061c59cc0_amadey_cobalt-strike_elex_hijackloader_icedid_luca-stealer_njrat_vidar.exe"C:\Users\Admin\AppData\Local\Temp\2026-09-24_aa0fb3d55652ad37d18941b061c59cc0_amadey_cobalt-strike_elex_hijackloader_icedid_luca-stealer_njrat_vidar.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3108 -
C:\Users\Admin\AppData\Local\Temp\tmp240734718.exeC:\Users\Admin\AppData\Local\Temp\tmp240734718.exe2⤵
- Modifies WinLogon for persistence
- Executes dropped EXE
- Drops file in System32 directory
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:1772
-
-
C:\Users\Admin\AppData\Local\Temp\tmp240734781.exeC:\Users\Admin\AppData\Local\Temp\tmp240734781.exe2⤵
- Executes dropped EXE
PID:2908
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Program Files\7-Zip\7z.exe-
- Size 6.2MB
- SHA256 0cb84a786b29200800a486ed1169836b290d198408ec8bb2ff130575cc7797f5
- MD5 aa0fb3d55652ad37d18941b061c59cc0
- SHA1 0566b06e65d40d49e87284481bce475569516246
- SHA512 260c47b41a23ca71454ea213ac44db7b7c83e6e767886a38945b85fdbe963d49351114446aa9b8924769342b0acb40c1768e585760b67d38e3d5fd42d5a5dcfb
- SSDEEP 98304:onUm8Uyfv78HEF3rpiD0BTa3aLkBo6DjD7dJjoHjo:o18U3EFbp7B2NDjD7d9oDo
- TLSH T1D8669E22B816C178E22580B195DAABB6C8687C66077005CB6780FF366E737D72E35F71
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Admin\AppData\Local\Temp\tmp240734718.exe
- Size 5.7MB
- SHA256 674ab8e0ed13e955510ee85d9f1e589109646a63e8472653386918d2111da960
- MD5 8561d9ad03cf2a2210ebaf2cdd88fbb3
- SHA1 a7bc5a6a5d8a8cda13f650abfe9cc6456b43a164
- SHA512 a4921f8d67bcaca939345da43b51f35041fc9b378bee631232e00aeb2da8223a34ff2770ba4fe15f89813d277e292a983e571b9d528a1c7587d9125a3a85b727
- SSDEEP 98304:YnUm8Uyfv78HEF3rpiD0BTa3aLkBo6DjD7dJjo:Y18U3EFbp7B2NDjD7d9o
- TLSH T1C4569D22B816C178F25580B159DEABB6C8587C66077104CB6B80BF366A737D72E34FB1
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Admin\AppData\Local\Temp\tmp240734781.exe
- Size 549KB
- SHA256 707f415d7d581edd9bce99a0429ad4629d3be0316c329e8b9ebd576f7ab50b71
- MD5 0b24892597dcb0257cdb78b5ed165218
- SHA1 5fe5d446406ff1e34d2fe3ee347769941636e323
- SHA512 24ea9e0f10a283e67850070976c81ae4b2d4d9bb92c6eb41b2557ad3ae02990287531a619cf57cd257011c6770d4c25dd19c3c0e46447eb4d0984d50d869e56f
- SSDEEP 6144:vXREiNYVLKZn56Vq2UjCpd0v5prE6v0GSxWUPZl1JP+1Lix7NGZIVuXQ82g4zrr8:vXZNYVLeyUji0h90ZD0wxpGZIVuKrHs
- TLSH T1C1C40916F6748335D073C0B9C5D2A68EE972308657308ACB4286D77C7E67BE6863A731
- MD5 SHA1 SHA512 SSDEEP TLSH