Analysis
- max time kernel
148s - max time network
148s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
09/08/2026, 10:31
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
e61a99a0c183923e18d2fbad7188e4dd52157bbaf087423adfd16e9a77c6208b.exe
Resource
win10v2004-20260513-en
windows10-2004-x64
17 signatures
150 seconds
General
- Target e61a99a0c183923e18d2fbad7188e4dd52157bbaf087423adfd16e9a77c6208b.exe
- Size 792KB
- Sample260809-mkb8vay1gv
- SHA256 e61a99a0c183923e18d2fbad7188e4dd52157bbaf087423adfd16e9a77c6208b
- MD5 f4ec645f9913bad813e8ba65aa80fffb
- SHA1 22695d4ad274b1e138fa001aa13f817f049bedc1
- SHA512 9d5d0b60f836c631898ffabf429b0e889cfd434c4026d654c889409b0cd957cf40106873844475395f14d1b09785d1f859342433e7f5da7ef311d9711deaab8d
- SSDEEP 12288:9JyhvSoASz2HynMKZakVgKnZ2tPo/gwKlHQCPsdcTLyOoxX2ziHX/j6zbioo:9MAUKynM/kVgdaIdGC+cTqHvjvf
- TLSH T1CF0523352751C432C25816B2F92AA2B1671D7431AAB54943FFA21B3FAF11391EBF234D
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Extracted
Family
-
djvu
C2
-
http://fuyt.org/test1/get.php
Attributes
-
extension
.kkia
-
offline_id
dYUDKE4rrBmSPsf8srHMsyP40jle9uyxDDCfdxt1
-
payload_url
http://zerit.top/dl/build2.exe
http://fuyt.org/files/1/build3.exe
-
ransomnote
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rsa_pubkey.plain
Extracted
Family
-
bdaejec
C2
-
ddos.dnsnb8.net
Signatures
- Family: Djvu Ransomware
Ransomware which is a variant of the STOP family.
- Detected Djvu ransomware 2 IoCs
resource yara_rule behavioral2/memory/1812-10-0x00000000023A0000-0x00000000024BB000-memory.dmp family_djvu behavioral2/memory/4908-11-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu - Detects Bdaejec Backdoor. 1 IoCs
Bdaejec is backdoor written in C++.
resource yara_rule behavioral2/memory/1628-15-0x00000000002E0000-0x00000000002E9000-memory.dmp family_bdaejec_backdoor -
resource yara_rule behavioral2/files/0x000600000001b86d-5.dat aspack_v212_v242 - Executes dropped EXE 1 IoCs
pid Process 1628 cpKwBd.exe - Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 1812 set thread context of 4908 1812 e61a99a0c183923e18d2fbad7188e4dd52157bbaf087423adfd16e9a77c6208b.exe 90 - Drops file in Program Files directory 64 IoCs
description ioc Process File opened for modification C:\Program Files\Microsoft Office\root\Office16\OLCFG.EXE cpKwBd.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\DW\DWTRIG20.EXE cpKwBd.exe File opened for modification C:\Program Files\Mozilla Firefox\updater.exe cpKwBd.exe File opened for modification C:\Program Files\7-Zip\7zG.exe cpKwBd.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\java-rmi.exe cpKwBd.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.Mashup.Container.Loader.exe cpKwBd.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\msoasb.exe cpKwBd.exe File opened for modification C:\Program Files\Microsoft Office\root\Client\AppVLP.exe cpKwBd.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\SETLANG.EXE cpKwBd.exe File opened for modification C:\Program Files\Windows Defender\MpCopyAccelerator.exe cpKwBd.exe File opened for modification C:\Program Files\Windows Defender Advanced Threat Protection\SenseGPParser.exe cpKwBd.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\jjs.exe cpKwBd.exe File opened for modification C:\Program Files\Windows Defender Advanced Threat Protection\SenseCM.exe cpKwBd.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Edge.GameAssist_1.0.3456.0_x64__8wekyb3d8bbwe\EdgeGameAssist.exe cpKwBd.exe File opened for modification C:\Program Files (x86)\Mozilla Maintenance Service\Uninstall.exe cpKwBd.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\jdeps.exe cpKwBd.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\jstack.exe cpKwBd.exe File opened for modification C:\Program Files\Java\jdk-1.8\jre\bin\keytool.exe cpKwBd.exe File opened for modification C:\Program Files\VideoLAN\VLC\vlc-cache-gen.exe cpKwBd.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroBroker.exe cpKwBd.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\MSOUC.EXE cpKwBd.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\OFFICE16\MSOICONS.EXE cpKwBd.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX64\Microsoft Analysis Services\AS OLEDB\140\SQLDumper.exe cpKwBd.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\jinfo.exe cpKwBd.exe File opened for modification C:\Program Files\Java\jdk-1.8\jre\bin\rmiregistry.exe cpKwBd.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\excelcnv.exe cpKwBd.exe File opened for modification C:\Program Files\Mozilla Firefox\plugin-container.exe cpKwBd.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\plug_ins\pi_brokers\32BitMAPIBroker.exe cpKwBd.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\javaws.exe cpKwBd.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\PDFREFLOW.EXE cpKwBd.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroRd32.exe cpKwBd.exe File opened for modification C:\Program Files\Java\jdk-1.8\jre\bin\klist.exe cpKwBd.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\IEContentService.exe cpKwBd.exe File opened for modification C:\Program Files (x86)\Windows Photo Viewer\ImagingDevices.exe cpKwBd.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\kinit.exe cpKwBd.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\rmic.exe cpKwBd.exe File opened for modification C:\Program Files\Windows Mail\wabmig.exe cpKwBd.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\ADelRCP.exe cpKwBd.exe File opened for modification C:\Program Files\Google\Chrome\Application\140.0.7339.81\notification_helper.exe cpKwBd.exe File opened for modification C:\Program Files\Java\jdk-1.8\jre\bin\jabswitch.exe cpKwBd.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\GRAPH.EXE cpKwBd.exe File opened for modification C:\Program Files\Mozilla Firefox\private_browsing.exe cpKwBd.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe cpKwBd.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\Browser\WCChromeExtn\WCChromeNativeMessagingHost.exe cpKwBd.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\Common.DBConnection.exe cpKwBd.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\filecompare.exe cpKwBd.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroLayoutRecognizer\AcroLayoutRecognizer.exe cpKwBd.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\arh.exe cpKwBd.exe File opened for modification C:\Program Files\Microsoft Office\root\Client\AppVDllSurrogate32.exe cpKwBd.exe File opened for modification C:\Program Files\Windows Defender Advanced Threat Protection\SenseTVM.exe cpKwBd.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\LogTransport2.exe cpKwBd.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\xjc.exe cpKwBd.exe File opened for modification C:\Program Files\Google\Chrome\Application\140.0.7339.81\Installer\chrmstp.exe cpKwBd.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\keytool.exe cpKwBd.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\OUTLOOK.EXE cpKwBd.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\SPREADSHEETCOMPARE.EXE cpKwBd.exe File opened for modification C:\Program Files\Google\Chrome\Application\140.0.7339.81\os_update_handler.exe cpKwBd.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\klist.exe cpKwBd.exe File opened for modification C:\Program Files\Windows Defender Advanced Threat Protection\MsSense.exe cpKwBd.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.Mashup.Container.exe cpKwBd.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\PerfBoost.exe cpKwBd.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\ktab.exe cpKwBd.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\DW\DW20.EXE cpKwBd.exe File opened for modification C:\Program Files\Windows Defender\Offline\OfflineScannerShell.exe cpKwBd.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 3144 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 e61a99a0c183923e18d2fbad7188e4dd52157bbaf087423adfd16e9a77c6208b.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cpKwBd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe - Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 1812 wrote to memory of 1628 1812 e61a99a0c183923e18d2fbad7188e4dd52157bbaf087423adfd16e9a77c6208b.exe 89 PID 1812 wrote to memory of 4908 1812 e61a99a0c183923e18d2fbad7188e4dd52157bbaf087423adfd16e9a77c6208b.exe 90 PID 1812 wrote to memory of 4908 1812 e61a99a0c183923e18d2fbad7188e4dd52157bbaf087423adfd16e9a77c6208b.exe 90 PID 1812 wrote to memory of 4908 1812 e61a99a0c183923e18d2fbad7188e4dd52157bbaf087423adfd16e9a77c6208b.exe 90 PID 1812 wrote to memory of 4908 1812 e61a99a0c183923e18d2fbad7188e4dd52157bbaf087423adfd16e9a77c6208b.exe 90 PID 1812 wrote to memory of 4908 1812 e61a99a0c183923e18d2fbad7188e4dd52157bbaf087423adfd16e9a77c6208b.exe 90 PID 1812 wrote to memory of 4908 1812 e61a99a0c183923e18d2fbad7188e4dd52157bbaf087423adfd16e9a77c6208b.exe 90 PID 1812 wrote to memory of 4908 1812 e61a99a0c183923e18d2fbad7188e4dd52157bbaf087423adfd16e9a77c6208b.exe 90 PID 1628 wrote to memory of 3144 1628 cpKwBd.exe 92
Processes
-
C:\Users\Admin\AppData\Local\Temp\e61a99a0c183923e18d2fbad7188e4dd52157bbaf087423adfd16e9a77c6208b.exe"C:\Users\Admin\AppData\Local\Temp\e61a99a0c183923e18d2fbad7188e4dd52157bbaf087423adfd16e9a77c6208b.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1812 -
C:\Users\Admin\AppData\Local\Temp\cpKwBd.exeC:\Users\Admin\AppData\Local\Temp\cpKwBd.exe2⤵
- Executes dropped EXE
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1628 -
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\662e28d2.bat" "3⤵
- Executes a command shell one-liner
- System Location Discovery: System Language Discovery
PID:3144
-
-
-
C:\Users\Admin\AppData\Local\Temp\e61a99a0c183923e18d2fbad7188e4dd52157bbaf087423adfd16e9a77c6208b.exe"C:\Users\Admin\AppData\Local\Temp\e61a99a0c183923e18d2fbad7188e4dd52157bbaf087423adfd16e9a77c6208b.exe"2⤵PID:4908
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\662e28d2.bat
- Size 187B
- SHA256 0928ab5c99434cacd9257b0b0af8e9c1be0631038ea6cd096a412f1a87be1c6d
- MD5 77a7e64a2a763bbf9f3b0d7f57e2667f
- SHA1 4bf41d2ffa685e3dfa27e40a31ce4a5475018a04
- SHA512 453ed91d221dfe141653037c167ce9c49821f089857f244cd0fc7ec2d95f4907d29d32566edac9d509255b3e05ad555e89aef0835eb23c3f41b103c8c3d0cb9f
- TLSH T124C01252C196C75D1898902F06E5614CC06608AC3FA92B214F20A45C65A640FF5D7351
- MD5 SHA1 SHA512 TLSH
- Path C:\Users\Admin\AppData\Local\Temp\cpKwBd.exe
- Size 15KB
- SHA256 4485df22c627fa0bb899d79aa6ff29bc5be1dbc3caa2b7a490809338d54b7794
- MD5 f7d21de5c4e81341eccd280c11ddcc9a
- SHA1 d4e9ef10d7685d491583c6fa93ae5d9105d815bd
- SHA512 e4553b86b083996038bacfb979ad0b86f578f95185d8efac34a77f6cc73e491d4f70e1449bbc9eb1d62f430800c1574101b270e1cb0eeed43a83049a79b636a3
- SSDEEP 384:IXZQaD7U8iu4YsAa7ZA0UvH2lsRv21yW7GbAxur6+Y9PffPz:gQGPL4vzZq2o9W7GsxBbPr
- TLSH T1A462BFB34FC098FFC4CD353341853687CB7B4670DABA617F826288372895E19AC55495
- MD5 SHA1 SHA512 SSDEEP TLSH