Analysis
- max time kernel
149s - max time network
138s - platform
windows10-2004_x64 - resource
win10v2004-20260911-en - resource tags
arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
11/11/2026, 00:36
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
2026-11-09_26fe4a210704b09cb6bb5ac2a9b7b05f_elex_remcos_smoke-loader_wapomi.exe
Resource
win10v2004-20260911-en
windows10-2004-x64
12 signatures
150 seconds
General
- Target 2026-11-09_26fe4a210704b09cb6bb5ac2a9b7b05f_elex_remcos_smoke-loader_wapomi.exe
- Size 2.0MB
- Sample261111-ax8flaes31
- SHA256 1f7e748f69e93b33f95c0da7b1216c52049ff3a641e0578a072799eaea4314a4
- MD5 26fe4a210704b09cb6bb5ac2a9b7b05f
- SHA1 b662f1a67856f6cd3384bd6b1f2c7307c09379ed
- SHA512 8be548af118dbe129c87c61de250c26e59c2030642cc7efbefb8a4d643b94fc34dfdc4d50ce7e003709fa17241b139a04dab715fda24326bbdf3d43c41b56a37
- SSDEEP 24576:twE8WQrujuTOmt14DClBuaCE+iWDBo2R7F3owVMqbCZ1be2/iJQeHNYB31GlXYHH:tLPbLQOYBVGyx90yCk1zOutfTTupnoT
- TLSH T111A59DB1B5C3417AC49219322186F33AEA659F0A052499D35FC93E777F30A205E6FA4F
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Extracted
Family
-
bdaejec
C2
-
ddos.dnsnb8.net
Signatures
- Detects Bdaejec Backdoor. 1 IoCs
Bdaejec is backdoor written in C++.
resource yara_rule behavioral1/memory/4388-29-0x0000000000360000-0x0000000000369000-memory.dmp family_bdaejec_backdoor - Custom signatureDetects executables packed with ASPack 3 IoCs
resource yara_rule behavioral1/files/0x000a000000024193-4.dat INDICATOR_EXE_Packed_ASPack behavioral1/memory/4388-5-0x0000000000360000-0x0000000000369000-memory.dmp INDICATOR_EXE_Packed_ASPack behavioral1/memory/4388-29-0x0000000000360000-0x0000000000369000-memory.dmp INDICATOR_EXE_Packed_ASPack -
resource yara_rule behavioral1/files/0x000a000000024193-4.dat aspack_v212_v242 - Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-939655444-3071939294-1401108526-1000\Control Panel\International\Geo\Nation zWSXTn.exe - Executes dropped EXE 1 IoCs
pid Process 4388 zWSXTn.exe - Drops file in Program Files directory 64 IoCs
description ioc Process File opened for modification C:\Program Files\Microsoft Office\root\Office16\MSQRY32.EXE zWSXTn.exe File opened for modification C:\Program Files\Java\jdk-1.8\jre\bin\java.exe zWSXTn.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\EXCEL.EXE zWSXTn.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Office.OneNote_16001.12026.20112.0_x64__8wekyb3d8bbwe\onenoteim.exe zWSXTn.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe zWSXTn.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\IEContentService.exe zWSXTn.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\MSOUC.EXE zWSXTn.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\Wordconv.exe zWSXTn.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\filecompare.exe zWSXTn.exe File opened for modification C:\Program Files\Windows Mail\wab.exe zWSXTn.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\servertool.exe zWSXTn.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\OFFICE16\MSOXMLED.EXE zWSXTn.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MicrosoftStickyNotes_3.6.73.0_x64__8wekyb3d8bbwe\Microsoft.Notes.exe zWSXTn.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrServicesUpdater.exe zWSXTn.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\LogTransport2.exe zWSXTn.exe File opened for modification C:\Program Files (x86)\Mozilla Maintenance Service\maintenanceservice.exe zWSXTn.exe File opened for modification C:\Program Files\Java\jdk-1.8\jre\bin\javaws.exe zWSXTn.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\misc.exe zWSXTn.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.XboxGameOverlay_1.46.11001.0_x64__8wekyb3d8bbwe\GameBar.exe zWSXTn.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroLayoutRecognizer\AcroLayoutRecognizer.exe zWSXTn.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\rmiregistry.exe zWSXTn.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsFeedbackHub_1.1907.3152.0_x64__8wekyb3d8bbwe\PilotshubApp.exe zWSXTn.exe File opened for modification C:\Program Files (x86)\Google\Update\DisabledGoogleUpdate.exe zWSXTn.exe File opened for modification C:\Program Files\Java\jre-1.8\bin\java.exe zWSXTn.exe File opened for modification C:\Program Files\Java\jre-1.8\bin\tnameserv.exe zWSXTn.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\protocolhandler.exe zWSXTn.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\Common.ShowHelp.exe zWSXTn.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MicrosoftSolitaireCollection_4.4.8204.0_x64__8wekyb3d8bbwe\Solitaire.exe zWSXTn.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.ZuneMusic_10.19071.19011.0_x64__8wekyb3d8bbwe\Music.UI.exe zWSXTn.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\javadoc.exe zWSXTn.exe File opened for modification C:\Program Files\7-Zip\7z.exe zWSXTn.exe File opened for modification C:\Program Files\Java\jre-1.8\bin\pack200.exe zWSXTn.exe File opened for modification C:\Program Files\Microsoft Office\root\Integration\Integrator.exe zWSXTn.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\SDXHelperBgt.exe zWSXTn.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\jps.exe zWSXTn.exe File opened for modification C:\Program Files\Java\jdk-1.8\jre\bin\jabswitch.exe zWSXTn.exe File opened for modification C:\Program Files\Microsoft Office\root\Client\AppVDllSurrogate32.exe zWSXTn.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MicrosoftOfficeHub_18.1903.1152.0_x64__8wekyb3d8bbwe\LocalBridge.exe zWSXTn.exe File opened for modification C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\createdump.exe zWSXTn.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\ktab.exe zWSXTn.exe File opened for modification C:\Program Files\Java\jdk-1.8\jre\bin\ktab.exe zWSXTn.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.Mashup.Container.NetFX45.exe zWSXTn.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\DW\DW20.EXE zWSXTn.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Microsoft3DViewer_6.1908.2042.0_x64__8wekyb3d8bbwe\View3D.ResourceResolver.exe zWSXTn.exe File opened for modification C:\Program Files (x86)\Mozilla Maintenance Service\Uninstall.exe zWSXTn.exe File opened for modification C:\Program Files (x86)\Windows Photo Viewer\ImagingDevices.exe zWSXTn.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\rmic.exe zWSXTn.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\serialver.exe zWSXTn.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\WINWORD.EXE zWSXTn.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.549981C3F5F10_1.1911.21713.0_x64__8wekyb3d8bbwe\Cortana.exe zWSXTn.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.GetHelp_10.1706.13331.0_x64__8wekyb3d8bbwe\GetHelp.exe zWSXTn.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MSPaint_6.1907.29027.0_x64__8wekyb3d8bbwe\PaintStudio.View.exe zWSXTn.exe File opened for modification C:\Program Files\Java\jre-1.8\bin\orbd.exe zWSXTn.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\PerfBoost.exe zWSXTn.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.SkypeApp_14.53.77.0_x64__kzf8qxf38zg5c\SkypeBackgroundHost.exe zWSXTn.exe File opened for modification C:\Program Files\dotnet\dotnet.exe zWSXTn.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\SCANPST.EXE zWSXTn.exe File opened for modification C:\Program Files\Microsoft Office 15\ClientX64\IntegratedOffice.exe zWSXTn.exe File opened for modification C:\Program Files\Mozilla Firefox\updater.exe zWSXTn.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MicrosoftSolitaireCollection_4.4.8204.0_x64__8wekyb3d8bbwe\Microsoft.MicrosoftSolitaireCollection.exe zWSXTn.exe File opened for modification C:\Program Files\Java\jre-1.8\bin\kinit.exe zWSXTn.exe File opened for modification C:\Program Files\Mozilla Firefox\uninstall\helper.exe zWSXTn.exe File opened for modification C:\Program Files\VideoLAN\VLC\uninstall.exe zWSXTn.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.BingWeather_4.25.20211.0_x64__8wekyb3d8bbwe\Microsoft.Msn.Weather.exe zWSXTn.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Executes a command shell one-liner 1 TTPs 1 IoCs
Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.
pid Process 4088 cmd.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 zWSXTn.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain zWSXTn.exe - System Location Discovery: System Language Discovery 1 TTPs 3 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 cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2026-11-09_26fe4a210704b09cb6bb5ac2a9b7b05f_elex_remcos_smoke-loader_wapomi.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language zWSXTn.exe - Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 2928 wrote to memory of 4388 2928 2026-11-09_26fe4a210704b09cb6bb5ac2a9b7b05f_elex_remcos_smoke-loader_wapomi.exe 86 PID 4388 wrote to memory of 4088 4388 zWSXTn.exe 96
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-11-09_26fe4a210704b09cb6bb5ac2a9b7b05f_elex_remcos_smoke-loader_wapomi.exe"C:\Users\Admin\AppData\Local\Temp\2026-11-09_26fe4a210704b09cb6bb5ac2a9b7b05f_elex_remcos_smoke-loader_wapomi.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2928 -
C:\Users\Admin\AppData\Local\Temp\zWSXTn.exeC:\Users\Admin\AppData\Local\Temp\zWSXTn.exe2⤵
- Checks computer location settings
- Executes dropped EXE
- Drops file in Program Files directory
- Reads the TCP/IP host and domain name from the registry
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4388 -
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\75cd02ac.bat" "3⤵
- Executes a command shell one-liner
- System Location Discovery: System Language Discovery
PID:4088
-
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\0TVW3OXT\k1[1].rar
- Size 1B
- SHA256 01ba4719c80b6fe911b091a7c05124b64eeece964e09c058ef8f9805daca546b
- MD5 68b329da9893e34099c7d8ad5cb9c940
- SHA1 adc83b19e793491b1c6ea0fd8b46cd9f32e592fc
- SHA512 be688838ca8686e5c90689bf2ab585cef1137c999b48c70b92f67a5c34dc15697b5d11c982ed6d71be1e1e7f7b4e0733884aa97c3f7a339a8ed03577cf74be09
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Local\Temp\3D71786E.exe
- Size 1B
- SHA256 08f271887ce94707da822d5263bae19d5519cb3614e0daedc4c7ce5dab7473f1
- MD5 69691c7bdcc3ce6d5d8a1361f22d04ac
- SHA1 c63ae6dd4fc9f9dda66970e827d13f7c73fe841c
- SHA512 253405e03b91441a6dd354a9b72e040068b1bfe10e83eb1a64a086c05525d8ccae2bf09130c624af50d55c3522a4fbb7c18cfc8dd843e5f4801d9ad2b5164b12
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Local\Temp\75cd02ac.bat
- Size 187B
- SHA256 587e2ca26a5dd4020606c566cd2eba3879f671258717ab82b2602d0e2be42c34
- MD5 6fe1899c87387e05455a2aa694a1b76f
- SHA1 b313c47f040e9dde90f9d1d2a17f299626afb5eb
- SHA512 b57c0c261c230875af2f6619ea638bd9e60c32ba639eb4830ffaeec32e7948fdf6f01f455fa4e3844e1051acc7d5febc4d9bdb7534cb274fefb45fa9f79969a1
- TLSH T194C012018286C76A5864506B8BE1B18CC0690CA93B892B218B30C46EA9E6C0EBAE3341
- MD5 SHA1 SHA512 TLSH
- Path C:\Users\Admin\AppData\Local\Temp\zWSXTn.exe
- Size 15KB
- SHA256 4354970ccc7cd6bb16318f132c34f6a1b3d5c2ea7ff53e1c9271905527f2db07
- MD5 56b2c3810dba2e939a8bb9fa36d3cf96
- SHA1 99ee31cd4b0d6a4b62779da36e0eeecdd80589fc
- SHA512 27812a9a034d7bd2ca73b337ae9e0b6dc79c38cfd1a2c6ac9d125d3cc8fa563c401a40d22155811d5054e5baa8cf8c8e7e03925f25fa856a9ba9dea708d15b4e
- SSDEEP 384:7XZQaD7U8iu4YsAa7ZA0UvH2lsRv21yW7GbAxur6+Y9PffPz:1QGPL4vzZq2o9W7GsxBbPr
- TLSH T10B62BFB34EC098FFC4CD353340823687CB7B4670DABA617F826288372895E19AC55595
- MD5 SHA1 SHA512 SSDEEP TLSH