Analysis
- max time kernel
149s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
19/08/2026, 20:24
Behavioral task
behavioral1
Sample
2026-08-19_3092724a19b6517d8b2e95eb42ce242c_amadey_cobalt-strike_elex_hijackloader_icedid_luca-stealer_njrat_vidar.exe
Resource
win10v2004-20260513-en
windows10-2004-x64
9 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-19_3092724a19b6517d8b2e95eb42ce242c_amadey_cobalt-strike_elex_hijackloader_icedid_luca-stealer_njrat_vidar.exe
Resource
win11ltsc2024-20260710-en
windows11-ltsc_2024-x64
9 signatures
150 seconds
General
- Target 2026-08-19_3092724a19b6517d8b2e95eb42ce242c_amadey_cobalt-strike_elex_hijackloader_icedid_luca-stealer_njrat_vidar.exe
- Size 6.9MB
- Sample260819-y66kcssgla
- SHA256 242ffecf0a971f7f65560e5f5dc9343403c92969258d1182ddc163c701b10644
- MD5 3092724a19b6517d8b2e95eb42ce242c
- SHA1 fbfa844553c60f4b5a98480fe7293130582e7a2c
- SHA512 bff4a34374fce78a817823d7727918d6551e170437e096dd5a0f5ed6c62534bcdd7806259e6625addf94e8899b841e0a086b0d5b965a27911f646a97878b967d
- SSDEEP 98304:qnUm8UyBv78HEF3rpiD0BTa3aLkBo6DjD7dijoHjoj:q18U9EFbp7B2NDjD7dUoDoj
- TLSH T1D9769E22B855C278E226C0B185DAABB6C8647C66073045CB6780FF366E737D36E35B71
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
Malware Config
Signatures
- Detects Fesber payload 10 IoCs
resource yara_rule behavioral1/files/0x000a00000002430a-3.dat family_fesber behavioral1/files/0x0003000000022bc9-17.dat family_fesber behavioral1/memory/1580-917-0x0000000000400000-0x000000000041B000-memory.dmp family_fesber behavioral1/memory/1580-1622-0x0000000000400000-0x000000000041B000-memory.dmp family_fesber behavioral1/memory/1580-2224-0x0000000000400000-0x000000000041B000-memory.dmp family_fesber behavioral1/memory/1580-2225-0x0000000000400000-0x000000000041B000-memory.dmp family_fesber behavioral1/memory/1580-2226-0x0000000000400000-0x000000000041B000-memory.dmp family_fesber behavioral1/memory/1580-2227-0x0000000000400000-0x000000000041B000-memory.dmp family_fesber behavioral1/memory/1580-2230-0x0000000000400000-0x000000000041B000-memory.dmp family_fesber behavioral1/memory/1580-2234-0x0000000000400000-0x000000000041B000-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" tmp240669343.exe - Executes dropped EXE 1 IoCs
pid Process 1580 tmp240669343.exe - Drops file in System32 directory 3 IoCs
description ioc Process File created C:\Windows\SysWOW64\fsb.stb tmp240669343.exe File created C:\Windows\SysWOW64\fsb.tmp tmp240669343.exe File opened for modification C:\Windows\SysWOW64\fsb.tmp tmp240669343.exe -
resource yara_rule behavioral1/memory/2816-0-0x0000000000400000-0x000000000041F000-memory.dmp upx behavioral1/memory/2816-11-0x0000000000400000-0x000000000041F000-memory.dmp upx behavioral1/files/0x0003000000022bc9-17.dat upx - Drops file in Program Files directory 64 IoCs
description ioc Process File created C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\SPREADSHEETCOMPARE.EXE tmp240669343.exe File created C:\Program Files\Mozilla Firefox\uninstall\helper.exe- tmp240669343.exe File created C:\Program Files (x86)\Microsoft\EdgeCore\139.0.3405.125\elevated_tracing_service.exe- tmp240669343.exe File created C:\Program Files\Internet Explorer\iediagcmd.exe tmp240669343.exe File created C:\Program Files\Java\jdk-1.8\jre\bin\javacpl.exe tmp240669343.exe File created C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.Mashup.Container.exe- tmp240669343.exe File created C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.Mashup.Container.exe tmp240669343.exe File created C:\Program Files\Microsoft Office\root\Office16\SELFCERT.EXE- tmp240669343.exe File created C:\Program Files\Microsoft Office\root\Office16\VPREVIEW.EXE- tmp240669343.exe File created C:\Program Files\Microsoft Office\root\Office16\WORDICON.EXE tmp240669343.exe File created C:\Program Files (x86)\Microsoft\EdgeUpdate_disable\1.3.195.65\MicrosoftEdgeUpdate.exe tmp240669343.exe File created C:\Program Files\Microsoft Office\root\Office16\msoasb.exe- tmp240669343.exe File created C:\Program Files\Microsoft Office\root\Office16\PPTICO.EXE tmp240669343.exe File created C:\Program Files\Microsoft Office\root\Office16\SDXHelperBgt.exe tmp240669343.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\Eula.exe- tmp240669343.exe File created C:\Program Files (x86)\Common Files\Microsoft Shared\VSTO\10.0\VSTOInstaller.exe- tmp240669343.exe File created C:\Program Files\Java\jdk-1.8\bin\klist.exe tmp240669343.exe File created C:\Program Files\Microsoft Office\root\Office16\SkypeSrv\SKYPESERVER.EXE tmp240669343.exe File created C:\Program Files (x86)\Common Files\Adobe\ARM\1.0\AdobeARM.exe- tmp240669343.exe File created C:\Program Files\Java\jdk-1.8\jre\bin\ssvagent.exe tmp240669343.exe File created C:\Program Files\Common Files\microsoft shared\ClickToRun\OfficeC2RClient.exe tmp240669343.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroRd32.exe- tmp240669343.exe File created C:\Program Files (x86)\Microsoft\EdgeUpdate_disable\1.3.195.65\MicrosoftEdgeUpdateSetup.exe- tmp240669343.exe File created C:\Program Files\Internet Explorer\ieinstal.exe- tmp240669343.exe File created C:\Program Files\Java\jdk-1.8\bin\javaw.exe- tmp240669343.exe File created C:\Program Files\Microsoft Office\root\Office16\msoasb.exe tmp240669343.exe File created C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\Installer\setup.exe tmp240669343.exe File created C:\Program Files\Common Files\microsoft shared\ClickToRun\IntegratedOffice.exe- tmp240669343.exe File created C:\Program Files\Microsoft Office\root\Office16\EXCEL.EXE tmp240669343.exe File created C:\Program Files\Microsoft Office\root\Office16\MSOHTMED.EXE- tmp240669343.exe File created C:\Program Files\Microsoft Office\root\Office16\POWERPNT.EXE- tmp240669343.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroRd32Info.exe- tmp240669343.exe File created C:\Program Files (x86)\Common Files\Microsoft Shared\ink\TabTip32.exe- tmp240669343.exe File created C:\Program Files\Common Files\microsoft shared\ink\InputPersonalization.exe- tmp240669343.exe File created C:\Program Files\Internet Explorer\iexplore.exe tmp240669343.exe File created C:\Program Files\Java\jdk-1.8\jre\bin\jp2launcher.exe tmp240669343.exe File created C:\Program Files\Microsoft Office\root\Integration\Addons\OneDriveSetup.exe tmp240669343.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroLayoutRecognizer\AcroLayoutRecognizer.exe tmp240669343.exe File created C:\Program Files (x86)\Microsoft\EdgeCore\132.0.2957.140\pwahelper.exe- tmp240669343.exe File created C:\Program Files\Mozilla Firefox\firefox.exe tmp240669343.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroTextExtractor.exe tmp240669343.exe File created C:\Program Files (x86)\Microsoft\EdgeCore\139.0.3405.125\msedgewebview2.exe tmp240669343.exe File created C:\Program Files\Common Files\microsoft shared\ink\ShapeCollector.exe tmp240669343.exe File created C:\Program Files\Java\jdk-1.8\bin\javafxpackager.exe- tmp240669343.exe File created C:\Program Files\Microsoft Office\root\Office16\ONENOTE.EXE tmp240669343.exe File created C:\Program Files (x86)\Internet Explorer\ieinstal.exe tmp240669343.exe File created C:\Program Files (x86)\Microsoft\EdgeUpdate_bk\1.3.147.37\MicrosoftEdgeUpdateComRegisterShell64.exe- tmp240669343.exe File created C:\Program Files\Java\jdk-1.8\jre\bin\orbd.exe- tmp240669343.exe File created C:\Program Files\Microsoft Office\root\Office16\SCANPST.EXE tmp240669343.exe File created C:\Program Files\Microsoft Office 15\ClientX64\IntegratedOffice.exe- tmp240669343.exe File created C:\Program Files\7-Zip\7z.exe tmp240669343.exe File created C:\Program Files\Google\Chrome\Application\140.0.7339.81\Installer\chrmstp.exe tmp240669343.exe File created C:\Program Files\Java\jdk-1.8\bin\jcmd.exe tmp240669343.exe File created C:\Program Files\Java\jdk-1.8\bin\jstack.exe- tmp240669343.exe File created C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\Common.ShowHelp.exe tmp240669343.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AdobeCollabSync.exe- tmp240669343.exe File created C:\Program Files (x86)\Internet Explorer\ieinstal.exe- tmp240669343.exe File created C:\Program Files\7-Zip\7zG.exe tmp240669343.exe File created C:\Program Files\Java\jdk-1.8\bin\javadoc.exe tmp240669343.exe File created C:\Program Files\Microsoft Office\Office16\OSPPREARM.EXE- tmp240669343.exe File created C:\Program Files\Microsoft Office\root\Office16\officeappguardwin32.exe tmp240669343.exe File created C:\Program Files\dotnet\dotnet.exe- tmp240669343.exe File created C:\Program Files\Java\jdk-1.8\bin\jabswitch.exe- tmp240669343.exe File created C:\Program Files\Java\jdk-1.8\jre\bin\tnameserv.exe tmp240669343.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 2026-08-19_3092724a19b6517d8b2e95eb42ce242c_amadey_cobalt-strike_elex_hijackloader_icedid_luca-stealer_njrat_vidar.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language tmp240669343.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 2816 wrote to memory of 1580 2816 2026-08-19_3092724a19b6517d8b2e95eb42ce242c_amadey_cobalt-strike_elex_hijackloader_icedid_luca-stealer_njrat_vidar.exe 87
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-19_3092724a19b6517d8b2e95eb42ce242c_amadey_cobalt-strike_elex_hijackloader_icedid_luca-stealer_njrat_vidar.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-19_3092724a19b6517d8b2e95eb42ce242c_amadey_cobalt-strike_elex_hijackloader_icedid_luca-stealer_njrat_vidar.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2816 -
C:\Users\Admin\AppData\Local\Temp\tmp240669343.exeC:\Users\Admin\AppData\Local\Temp\tmp240669343.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:1580
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
- Path C:\Program Files\7-Zip\7z.exe
- Size 7.4MB
- SHA256 1bc7f74823221c27dcc2af5dcad5dda7a02477ef6506cde30f1ad283bc679538
- MD5 9f54049fc16f71d81ea3c2b2f29f924b
- SHA1 3b4334d249edd41410adaba931930459ee0ef110
- SHA512 3f39b1370d13684323ebfde5b3117274e2d0c60f206bec9385a55f75f355a1c5207effac296a29b1f9ebf2782d795da4aa036d9476bd971f27622152009fab43
- SSDEEP 98304:qnUm8UyBv78HEF3rpiD0BTa3aLkBo6DjD7dijoHjojHjo:q18U9EFbp7B2NDjD7dUoDojDo
- TLSH T168768C22F865C238E122C0B189DAABB6C8757C66073045CB5780FB396E737D76A35B71
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Admin\AppData\Local\Temp\tmp240669343.exe
- Size 6.9MB
- SHA256 8e795e2b735eeac5532766fafb465800314715bdcc3a4c905e66b24b8dcf0504
- MD5 7a37db5ea4c5d3b574e9eae81ad83b41
- SHA1 f8fc19d78f187b46d486d0121924d732e9c6ff59
- SHA512 0993809efa33029f5f04886dc8c2ae33919d87cd5c46a52281a2c2bba795f29aa68e94c80fef9660a41a6c35b2c9c415e7e339ad769f5e5d5d14e6247a3f75de
- SSDEEP 98304:YnUm8UyBv78HEF3rpiD0BTa3aLkBo6DjD7dijoHjoj:Y18U9EFbp7B2NDjD7dUoDoj
- TLSH T122769E22B855C278E226C0B185DAABB6C8647C66073045CB6780FF366E737D36E35B71
- MD5 SHA1 SHA512 SSDEEP TLSH