Analysis
- max time kernel
149s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
25/07/2026, 10:49
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
25554332caa7ee354f1557730e23c8253381f230ab7e9d33697057f19ecd6ab7.exe
Resource
win10v2004-20260513-en
windows10-2004-x64
10 signatures
150 seconds
General
- Target 25554332caa7ee354f1557730e23c8253381f230ab7e9d33697057f19ecd6ab7.exe
- Size 6.7MB
- Sample260725-mw431awbme
- SHA256 25554332caa7ee354f1557730e23c8253381f230ab7e9d33697057f19ecd6ab7
- MD5 0f96bfcc387751eda8b352386e528a67
- SHA1 f343983548ceea3edee558afc9c5ae904f881259
- SHA512 30c72a483825b362edce3835bc7ebc5f09243edd62f97f229e6f2ff29e73f2360d0952dc885d131b90eb49ed99ddea299793623f99d177a7135d529235606d39
- SSDEEP 98304:5kaWsAYtVm8xoZV/Cypkj2JY7kXeYfmFao4PWjJ8MjY0:5kaWsAYbZawypka4lYbMJ8MjY0
- TLSH T19B66AE10F6C3D0A6C596097011EE76BA56343F190F2497E3F790BF6AB871BD1983229E
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Extracted
Family
-
bdaejec
C2
-
ddos.dnsnb8.net
Signatures
- Detects Bdaejec Backdoor. 2 IoCs
Bdaejec is backdoor written in C++.
resource yara_rule behavioral1/memory/2420-6-0x0000000000AD0000-0x0000000000AD9000-memory.dmp family_bdaejec_backdoor behavioral1/memory/2420-29-0x0000000000AD0000-0x0000000000AD9000-memory.dmp family_bdaejec_backdoor -
resource yara_rule behavioral1/files/0x000a000000023fd3-3.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-1-5-21-889581200-2041691093-2048517887-1000\Control Panel\International\Geo\Nation dnlFai.exe - Executes dropped EXE 1 IoCs
pid Process 2420 dnlFai.exe - Drops file in Program Files directory 64 IoCs
description ioc Process File opened for modification C:\Program Files\Windows Photo Viewer\ImagingDevices.exe dnlFai.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.549981C3F5F10_1.1911.21713.0_x64__8wekyb3d8bbwe\Win32Bridge.Server.exe dnlFai.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\officeappguardwin32.exe dnlFai.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\DATABASECOMPARE.EXE dnlFai.exe File opened for modification C:\Program Files\Mozilla Firefox\firefox.exe dnlFai.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\reader_sl.exe dnlFai.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\javapackager.exe dnlFai.exe File opened for modification C:\Program Files\Java\jdk-1.8\jre\bin\rmid.exe dnlFai.exe File opened for modification C:\Program Files\Java\jre-1.8\bin\unpack200.exe dnlFai.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\WORDICON.EXE dnlFai.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsCamera_2018.826.98.0_x64__8wekyb3d8bbwe\WindowsCamera.exe dnlFai.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\jjs.exe dnlFai.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\xjc.exe dnlFai.exe File opened for modification C:\Program Files\Java\jdk-1.8\jre\bin\java.exe dnlFai.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\ONENOTE.EXE dnlFai.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.ZuneMusic_10.19071.19011.0_x64__8wekyb3d8bbwe\Music.UI.exe dnlFai.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\ADelRCP.exe dnlFai.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\idlj.exe dnlFai.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\jrunscript.exe dnlFai.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\PerfBoost.exe dnlFai.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\jcmd.exe dnlFai.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\policytool.exe dnlFai.exe File opened for modification C:\Program Files\Java\jdk-1.8\jre\bin\jabswitch.exe dnlFai.exe File opened for modification C:\Program Files\Java\jdk-1.8\jre\bin\javaw.exe dnlFai.exe File opened for modification C:\Program Files\Java\jre-1.8\bin\rmid.exe dnlFai.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\SDXHelperBgt.exe dnlFai.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\rmid.exe dnlFai.exe File opened for modification C:\Program Files\Java\jre-1.8\bin\javacpl.exe dnlFai.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\GRAPH.EXE dnlFai.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\msoia.exe dnlFai.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\plug_ins\pi_brokers\32BitMAPIBroker.exe dnlFai.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\jabswitch.exe dnlFai.exe File opened for modification C:\Program Files\Microsoft Office\Office16\OSPPREARM.EXE dnlFai.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\MSQRY32.EXE dnlFai.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.XboxGamingOverlay_2.34.28001.0_x64__8wekyb3d8bbwe\GameBar.exe dnlFai.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\SPREADSHEETCOMPARE.EXE dnlFai.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.XboxGameOverlay_1.46.11001.0_x64__8wekyb3d8bbwe\GameBar.exe dnlFai.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\klist.exe dnlFai.exe File opened for modification C:\Program Files\Java\jre-1.8\bin\rmiregistry.exe dnlFai.exe File opened for modification C:\Program Files\Java\jre-1.8\bin\tnameserv.exe dnlFai.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\Common.DBConnection64.exe dnlFai.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.ZuneVideo_10.19071.19011.0_x64__8wekyb3d8bbwe\Video.UI.exe dnlFai.exe File opened for modification C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\createdump.exe dnlFai.exe File opened for modification C:\Program Files\Java\jre-1.8\bin\keytool.exe dnlFai.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\SETLANG.EXE dnlFai.exe File opened for modification C:\Program Files\Windows Security\BrowserCore\BrowserCore.exe dnlFai.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.BingWeather_4.25.20211.0_x64__8wekyb3d8bbwe\Microsoft.Msn.Weather.exe dnlFai.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.VP9VideoExtensions_1.0.22681.0_x64__8wekyb3d8bbwe\codecpacks.VP9.exe dnlFai.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroBroker.exe dnlFai.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\servertool.exe dnlFai.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\CLVIEW.EXE dnlFai.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\javac.exe dnlFai.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\rmic.exe dnlFai.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Edge.GameAssist_1.0.3456.0_x64__8wekyb3d8bbwe\EdgeGameAssist.exe dnlFai.exe File opened for modification C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\createdump.exe dnlFai.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\jar.exe dnlFai.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\OFFICE16\MSOICONS.EXE dnlFai.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.DesktopAppInstaller_1.0.30251.0_x64__8wekyb3d8bbwe\AppInstallerPythonRedirector.exe dnlFai.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsAlarms_10.1906.2182.0_x64__8wekyb3d8bbwe\Time.exe dnlFai.exe File opened for modification C:\Program Files\Java\jdk-1.8\jre\bin\java-rmi.exe dnlFai.exe File opened for modification C:\Program Files\Java\jre-1.8\bin\jabswitch.exe dnlFai.exe File opened for modification C:\Program Files\Java\jdk-1.8\jre\bin\javaws.exe dnlFai.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsFeedbackHub_1.1907.3152.0_x64__8wekyb3d8bbwe\PilotshubApp.exe dnlFai.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\ktab.exe dnlFai.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 2212 cmd.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 25554332caa7ee354f1557730e23c8253381f230ab7e9d33697057f19ecd6ab7.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language dnlFai.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe - Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 4908 wrote to memory of 2420 4908 25554332caa7ee354f1557730e23c8253381f230ab7e9d33697057f19ecd6ab7.exe 86 PID 2420 wrote to memory of 2212 2420 dnlFai.exe 100
Processes
-
C:\Users\Admin\AppData\Local\Temp\25554332caa7ee354f1557730e23c8253381f230ab7e9d33697057f19ecd6ab7.exe"C:\Users\Admin\AppData\Local\Temp\25554332caa7ee354f1557730e23c8253381f230ab7e9d33697057f19ecd6ab7.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4908 -
C:\Users\Admin\AppData\Local\Temp\dnlFai.exeC:\Users\Admin\AppData\Local\Temp\dnlFai.exe2⤵
- Checks computer location settings
- Executes dropped EXE
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2420 -
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\7c890a70.bat" "3⤵
- Executes a command shell one-liner
- System Location Discovery: System Language Discovery
PID:2212
-
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\ODLR95UN\k2[1].rar
- Size 1B
- SHA256 01ba4719c80b6fe911b091a7c05124b64eeece964e09c058ef8f9805daca546b
- MD5 68b329da9893e34099c7d8ad5cb9c940
- SHA1 adc83b19e793491b1c6ea0fd8b46cd9f32e592fc
- SHA512 be688838ca8686e5c90689bf2ab585cef1137c999b48c70b92f67a5c34dc15697b5d11c982ed6d71be1e1e7f7b4e0733884aa97c3f7a339a8ed03577cf74be09
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Local\Temp\3BEF650B.exe
- Size 1B
- SHA256 08f271887ce94707da822d5263bae19d5519cb3614e0daedc4c7ce5dab7473f1
- MD5 69691c7bdcc3ce6d5d8a1361f22d04ac
- SHA1 c63ae6dd4fc9f9dda66970e827d13f7c73fe841c
- SHA512 253405e03b91441a6dd354a9b72e040068b1bfe10e83eb1a64a086c05525d8ccae2bf09130c624af50d55c3522a4fbb7c18cfc8dd843e5f4801d9ad2b5164b12
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Local\Temp\7c890a70.bat
- Size 187B
- SHA256 0d70f97ed690152d5e0aeb8defed2324678f9d40c32a7edcd8ef1efcc7827f7c
- MD5 5babbe13d66360f763725e065dfdc605
- SHA1 8e85288c0a6098cbec4242a914dbacd36da120cb
- SHA512 762de307fcc6f58f062708c5c446d11932d072331797c6f550710f3ecdf257cc0fc28fa129b71a0056dd331fe3da972a2e3fc6be3784f3bad597bb57ee83bc62
- TLSH T129C01201C186C65D1894611706F5614CD9650A9CBB596B118B31886C73AAC0DB5D7342
- MD5 SHA1 SHA512 TLSH
- Path C:\Users\Admin\AppData\Local\Temp\dnlFai.exe
- Size 15KB
- SHA256 4354970ccc7cd6bb16318f132c34f6a1b3d5c2ea7ff53e1c9271905527f2db07
- MD5 56b2c3810dba2e939a8bb9fa36d3cf96
- SHA1 99ee31cd4b0d6a4b62779da36e0eeecdd80589fc
- SHA512 27812a9a034d7bd2ca73b337ae9e0b6dc79c38cfd1a2c6ac9d125d3cc8fa563c401a40d22155811d5054e5baa8cf8c8e7e03925f25fa856a9ba9dea708d15b4e
- SSDEEP 384:7XZQaD7U8iu4YsAa7ZA0UvH2lsRv21yW7GbAxur6+Y9PffPz:1QGPL4vzZq2o9W7GsxBbPr
- TLSH T10B62BFB34EC098FFC4CD353340823687CB7B4670DABA617F826288372895E19AC55595
- MD5 SHA1 SHA512 SSDEEP TLSH