Analysis
- max time kernel
149s - max time network
149s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
13/10/2026, 00:56
Behavioral task
behavioral1
Sample
2026-10-11_3239cbe70e783f64297b3ae4a252d7cd_akira_amadey_cobalt-strike_elex_glassworm_hijackloader_icedid_njrat_stealc_vidar.exe
Resource
win10v2004-20260911-en
windows10-2004-x64
10 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-10-11_3239cbe70e783f64297b3ae4a252d7cd_akira_amadey_cobalt-strike_elex_glassworm_hijackloader_icedid_njrat_stealc_vidar.exe
Resource
win11ltsc2024-20260911-en
windows11-ltsc_2024-x64
10 signatures
150 seconds
General
- Target 2026-10-11_3239cbe70e783f64297b3ae4a252d7cd_akira_amadey_cobalt-strike_elex_glassworm_hijackloader_icedid_njrat_stealc_vidar.exe
- Size 9.1MB
- Sample261013-batvcsbw4y
- SHA256 ea8e7859d3d3acfdbbfcfa090ff0ac1df40af272bbc2fb9b701444862b087d05
- MD5 3239cbe70e783f64297b3ae4a252d7cd
- SHA1 1907ad1fd5c58db00744dfc0d63bef19546aeadd
- SHA512 c38458adcdd82893c7542025f4ef02356b8747754755aef37091e54f81d95b401992380e5f4dd2d157db24261b3411c34b52b682a5b1a2fefdd9704dd0a9763c
- SSDEEP 49152:UPd9ob7ko+4KuUOROgppYqcgjI45TMwwapIgTj+/PivcpfQvdaKYXf3CUeyjc4tN:mDIkC69LapIn/PvOAjcXvvOOQz
- TLSH T17AA6392E72A504A9C19AD079CF428615E3E1BC588BF193EB715473DA2FB36D13E3A305
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
Malware Config
Signatures
- Detects Fesber payload 4 IoCs
resource yara_rule behavioral2/files/0x000600000001b857-4.dat family_fesber behavioral2/memory/5224-7-0x0000000000400000-0x000000000041E000-memory.dmp family_fesber behavioral2/files/0x000d00000001c55f-16.dat family_fesber behavioral2/memory/5224-370-0x0000000000400000-0x000000000041E000-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" tmp240739468.exe - Executes dropped EXE 2 IoCs
pid Process 5224 tmp240739468.exe 2564 tmp240739640.exe - Drops file in System32 directory 3 IoCs
description ioc Process File created C:\Windows\SysWOW64\fsb.stb tmp240739468.exe File created C:\Windows\SysWOW64\fsb.tmp tmp240739468.exe File opened for modification C:\Windows\SysWOW64\fsb.tmp tmp240739468.exe -
resource yara_rule behavioral2/memory/5232-0-0x0000000000400000-0x000000000041F000-memory.dmp upx behavioral2/files/0x000600000001b857-4.dat upx behavioral2/memory/5224-7-0x0000000000400000-0x000000000041E000-memory.dmp upx behavioral2/memory/5232-14-0x0000000000400000-0x000000000041F000-memory.dmp upx behavioral2/files/0x000d00000001c55f-16.dat upx behavioral2/memory/5224-370-0x0000000000400000-0x000000000041E000-memory.dmp upx - Drops file in Program Files directory 64 IoCs
description ioc Process File created C:\Program Files\Java\jdk-1.8\jre\bin\policytool.exe tmp240739468.exe File created C:\Program Files\Microsoft Office\root\Office16\msotd.exe tmp240739468.exe File created C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\DW\DW20.EXE tmp240739468.exe File created C:\Program Files (x86)\Microsoft\EdgeCore\122.0.2365.106\Installer\setup.exe tmp240739468.exe File created C:\Program Files\Java\jdk-1.8\bin\jarsigner.exe- tmp240739468.exe File created C:\Program Files\Java\jdk-1.8\jre\bin\javaws.exe- tmp240739468.exe File created C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\DATABASECOMPARE.EXE tmp240739468.exe File created C:\Program Files\VideoLAN\VLC\vlc.exe- tmp240739468.exe File created C:\Program Files\7-Zip\7zFM.exe- tmp240739468.exe File created C:\Program Files\7-Zip\7zFM.exe tmp240739468.exe File created C:\Program Files\Common Files\microsoft shared\MSInfo\msinfo32.exe- tmp240739468.exe File created C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\elevated_tracing_service.exe- tmp240739468.exe File created C:\Program Files (x86)\Microsoft\EdgeWebView\Application\122.0.2365.106\cookie_exporter.exe- tmp240739468.exe File created C:\Program Files\Java\jdk-1.8\bin\unpack200.exe tmp240739468.exe File created C:\Program Files\Java\jdk-1.8\jre\bin\java.exe tmp240739468.exe File created C:\Program Files\Microsoft Office\root\Integration\Integrator.exe- tmp240739468.exe File created C:\Program Files\Microsoft Office\root\Office16\VPREVIEW.EXE tmp240739468.exe File created C:\Program Files\Common Files\microsoft shared\ClickToRun\InspectorOfficeGadget.exe- tmp240739468.exe File created C:\Program Files\Java\jre-1.8\bin\keytool.exe tmp240739468.exe File created C:\Program Files\Java\jdk-1.8\bin\jstatd.exe tmp240739468.exe File created C:\Program Files\Java\jdk-1.8\bin\serialver.exe tmp240739468.exe File created C:\Program Files\Java\jdk-1.8\jre\bin\rmid.exe tmp240739468.exe File created C:\Program Files\Microsoft Office\root\Office16\MSOSYNC.EXE- tmp240739468.exe File created C:\Program Files (x86)\Common Files\Oracle\Java\javapath\java.exe tmp240739468.exe File created C:\Program Files (x86)\Microsoft\EdgeCore\122.0.2365.106\BHO\ie_to_edge_stub.exe tmp240739468.exe File created C:\Program Files\Java\jre-1.8\bin\javaws.exe tmp240739468.exe File created C:\Program Files\Mozilla Firefox\pingsender.exe tmp240739468.exe File created C:\Program Files\VideoLAN\VLC\vlc.exe tmp240739468.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\plug_ins\pi_brokers\32BitMAPIBroker.exe tmp240739468.exe File created C:\Program Files (x86)\Microsoft\EdgeUpdate_bk\1.3.185.27\MicrosoftEdgeUpdateBroker.exe- tmp240739468.exe File created C:\Program Files\Internet Explorer\ExtExport.exe tmp240739468.exe File created C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\SPREADSHEETCOMPARE.EXE tmp240739468.exe File created C:\Program Files\Java\jdk-1.8\bin\orbd.exe tmp240739468.exe File created C:\Program Files\Microsoft Office\root\Office16\EXCEL.EXE- tmp240739468.exe File created C:\Program Files\Microsoft Office\root\Office16\msoadfsb.exe- tmp240739468.exe File created C:\Program Files\Microsoft Office\root\Office16\msoev.exe- tmp240739468.exe File created C:\Program Files\Microsoft Office\root\Office16\WORDICON.EXE- tmp240739468.exe File created C:\Program Files\Java\jdk-1.8\jre\bin\jp2launcher.exe tmp240739468.exe File created C:\Program Files\Microsoft Office\root\Office16\PPTICO.EXE- tmp240739468.exe File created C:\Program Files (x86)\Mozilla Maintenance Service\maintenanceservice.exe- tmp240739468.exe File created C:\Program Files\dotnet\dotnet.exe tmp240739468.exe File created C:\Program Files\Java\jre-1.8\bin\javaw.exe tmp240739468.exe File created C:\Program Files\Microsoft Office\root\Client\AppVDllSurrogate32.exe tmp240739468.exe File created C:\Program Files\Microsoft Office\root\Office16\WINWORD.EXE tmp240739468.exe File created C:\Program Files (x86)\Microsoft\EdgeWebView\Application\122.0.2365.106\pwahelper.exe- tmp240739468.exe File created C:\Program Files\Java\jdk-1.8\jre\bin\kinit.exe- tmp240739468.exe File created C:\Program Files\Microsoft Office\root\Office16\ORGCHART.EXE tmp240739468.exe File created C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\Common.DBConnection64.exe- tmp240739468.exe File created C:\Program Files\Mozilla Firefox\pingsender.exe- tmp240739468.exe File created C:\Program Files\VideoLAN\VLC\vlc-cache-gen.exe tmp240739468.exe File created C:\Program Files (x86)\Common Files\Adobe\ARM\1.0\AdobeARM.exe- tmp240739468.exe File created C:\Program Files\7-Zip\Uninstall.exe tmp240739468.exe File created C:\Program Files\Common Files\microsoft shared\ClickToRun\OfficeClickToRun.exe- tmp240739468.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\createdump.exe tmp240739468.exe File created C:\Program Files\Mozilla Firefox\firefox.exe- tmp240739468.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\createdump.exe- tmp240739468.exe File created C:\Program Files\Mozilla Firefox\default-browser-agent.exe- tmp240739468.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\ADelRCP.exe tmp240739468.exe File created C:\Program Files (x86)\Microsoft\EdgeCore\139.0.3405.125\BHO\ie_to_edge_stub.exe- tmp240739468.exe File created C:\Program Files (x86)\Microsoft\EdgeUpdate_bk\1.3.185.27\MicrosoftEdgeUpdate.exe tmp240739468.exe File created C:\Program Files\Internet Explorer\ielowutil.exe tmp240739468.exe File created C:\Program Files\Java\jdk-1.8\bin\jdeps.exe- tmp240739468.exe File created C:\Program Files\Java\jdk-1.8\jre\bin\jabswitch.exe- tmp240739468.exe File created C:\Program Files\Java\jdk-1.8\jre\bin\servertool.exe- tmp240739468.exe - Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs
The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.
description ioc Process Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname tmp240739468.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain tmp240739468.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 2026-10-11_3239cbe70e783f64297b3ae4a252d7cd_akira_amadey_cobalt-strike_elex_glassworm_hijackloader_icedid_njrat_stealc_vidar.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language tmp240739468.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 5232 wrote to memory of 5224 5232 2026-10-11_3239cbe70e783f64297b3ae4a252d7cd_akira_amadey_cobalt-strike_elex_glassworm_hijackloader_icedid_njrat_stealc_vidar.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-10-11_3239cbe70e783f64297b3ae4a252d7cd_akira_amadey_cobalt-strike_elex_glassworm_hijackloader_icedid_njrat_stealc_vidar.exe"C:\Users\Admin\AppData\Local\Temp\2026-10-11_3239cbe70e783f64297b3ae4a252d7cd_akira_amadey_cobalt-strike_elex_glassworm_hijackloader_icedid_njrat_stealc_vidar.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5232 -
C:\Users\Admin\AppData\Local\Temp\tmp240739468.exeC:\Users\Admin\AppData\Local\Temp\tmp240739468.exe2⤵
- Modifies WinLogon for persistence
- Executes dropped EXE
- Drops file in System32 directory
- Drops file in Program Files directory
- Reads the TCP/IP host and domain name from the registry
- System Location Discovery: System Language Discovery
PID:5224
-
-
C:\Users\Admin\AppData\Local\Temp\tmp240739640.exeC:\Users\Admin\AppData\Local\Temp\tmp240739640.exe2⤵
- Executes dropped EXE
PID:2564
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Program Files\7-Zip\7z.exe-
- Size 8.9MB
- SHA256 23e02076bf645c34207b73cf9891d705655e693385d0805280f13afcf1cd13bc
- MD5 5a605947d7eef9d3ee706675ce9de5f4
- SHA1 79f4d9ea4c48be44dca0529d3509f75f9f60f3fe
- SHA512 7fd068e964b6ab85368d1bc28902da036097e507efa9fdd7b29250071635aabf18a85d764ae297e8fa9ae2d4b14e2f26f242ea54e885ec18b39ac45d0f03ee70
- SSDEEP 49152:UPd9ob7ko+4KuUOROgppYqcgjI45TMwwapIgTj+/PivcpfQvdaKYXf3CUeyjc4t0:mDIkC69LapIn/PvOAjcXvvOOKjo
- TLSH T1BF96392E72A540A9C1AAD079CF428615E3F1BC588BF183EB715473D92FB36D13A3A315
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Admin\AppData\Local\Temp\tmp240739468.exe
- Size 8.3MB
- SHA256 3296a3fe02f04ffa52d84025809c68ce6165175ecba331fef1f47c309c1246f7
- MD5 ecf112d6aa0ab919de20213a3279c0fa
- SHA1 ab5ef7eb1bfdbe09a74d94216d4104eabc81d560
- SHA512 480cf6c5c4afba981979f0410f28dc3aad7daa0669bcd0173433005309a0ddd7d1669fb54fc0ebf7437b32225e579bded9e7611392e8c4f252cbd2fee60a94c2
- SSDEEP 49152:jPd9ob7ko+4KuUOROgppYqcgjI45TMwwapIgTj+/PivcpfQvdaKYXf3CUeyjc4tr:zDIkC69LapIn/PvOAjcXvvOO
- TLSH T11396392E72A504A9C19A9079CF428615D3E1BC68CBF193EB715473DA2FB36D13E3A305
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Admin\AppData\Local\Temp\tmp240739640.exe
- Size 754KB
- SHA256 c4f98f948299d5e08b397ecd534ed39901fe1d0113d71553e24cad27fb92bf6b
- MD5 4e476d5b936280484760835c5c063f43
- SHA1 923952cd4e5ac35ab817d310a427dcc5eb31a4f9
- SHA512 65a438c635d9dae0e0e4f8d4af3b3a99c4c4d12268502451593f7664c8c4c055a694710fc7129d647aaf49c437adcd40ec2283da4c7a06e99b1fa4aafbc65331
- SSDEEP 6144:dhrj7wv81dS4fzlyVUqNnL8CWNvaxfzqzoibecFw/DgBV1LbkdbTQAgp5Yz+v7qR:ZsH3NOBfawFk+p5Bv70
- TLSH T1D6F43A83AE152AFAC445C1747173198365E436085725BBEF82ACFB323E95AD21F78BC1
- MD5 SHA1 SHA512 SSDEEP TLSH