Analysis
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max time kernel
108s -
max time network
126s -
platform
windows10-2004_x64 -
resource
win10v2004-20250217-en -
resource tags
arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system -
submitted
24/02/2025, 04:42
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
2025-02-24_9a5f791f20c3197d9eebf4d59b9be4e7_bkransomware_wapomi.exe
Resource
win7-20240903-en
windows7-x64
10 signatures
150 seconds
General
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Target
2025-02-24_9a5f791f20c3197d9eebf4d59b9be4e7_bkransomware_wapomi.exe
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Size
215KB
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MD5
9a5f791f20c3197d9eebf4d59b9be4e7
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SHA1
7d233c80c590b230be208e91f7248dfeaa8a82d5
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SHA256
d3eac47e72da4cb6b2a10a088f84616401f6ccb68d9cbaa38f857a9f13adef62
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SHA512
f48ca46356d990a0ffff22c1aa902459f99d84eeb7a988eb3626590a256e5008460435dc796f8ba8cfe6b62f8b7c0b747fdb4b815354c8c3d1cb05d0497f8e7a
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SSDEEP
3072:R666SmGgfYMSLpt690O4EHIsxeqvrvuSUdybQHoAw3MVDdVY3KRGCH:R2SSI60OhHLjv1nt3KE
Malware Config
Extracted
Family
bdaejec
C2
ddos.dnsnb8.net
Signatures
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Bdaejec family
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Detects Bdaejec Backdoor. 1 IoCs
Bdaejec is backdoor written in C++.
resource yara_rule behavioral2/memory/2824-8-0x0000000000ED0000-0x0000000000ED9000-memory.dmp family_bdaejec_backdoor -
resource yara_rule behavioral2/files/0x001000000001ee1b-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-1-5-21-2593460650-190333679-3676257533-1000\Control Panel\International\Geo\Nation pEmDRz.exe -
Executes dropped EXE 1 IoCs
pid Process 2824 pEmDRz.exe -
Drops file in Program Files directory 64 IoCs
description ioc Process File opened for modification C:\Program Files\Microsoft Office\root\Office16\misc.exe pEmDRz.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\OFFICE16\MSOICONS.EXE pEmDRz.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.549981C3F5F10_1.1911.21713.0_x64__8wekyb3d8bbwe\Cortana.exe pEmDRz.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.SkypeApp_14.53.77.0_x64__kzf8qxf38zg5c\SkypeApp.exe pEmDRz.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\HxOutlook.exe pEmDRz.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroRd32.exe pEmDRz.exe File opened for modification C:\Program Files (x86)\Windows Mail\wabmig.exe pEmDRz.exe File opened for modification C:\Program Files (x86)\Windows Photo Viewer\ImagingDevices.exe pEmDRz.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Getstarted_8.2.22942.0_x64__8wekyb3d8bbwe\fmui\fmui.exe pEmDRz.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.StorePurchaseApp_11811.1001.18.0_x64__8wekyb3d8bbwe\StoreExperienceHost.exe pEmDRz.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\PDFREFLOW.EXE pEmDRz.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\PPTICO.EXE pEmDRz.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsAlarms_10.1906.2182.0_x64__8wekyb3d8bbwe\Time.exe pEmDRz.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\DW\DWTRIG20.EXE pEmDRz.exe File opened for modification C:\Program Files\Mozilla Firefox\crashreporter.exe pEmDRz.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\jcmd.exe pEmDRz.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\jmap.exe pEmDRz.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\policytool.exe pEmDRz.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Microsoft3DViewer_6.1908.2042.0_x64__8wekyb3d8bbwe\3DViewer.exe pEmDRz.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Xbox.TCUI_1.23.28002.0_x64__8wekyb3d8bbwe\TCUI-App.exe pEmDRz.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.SkypeApp_14.53.77.0_x64__kzf8qxf38zg5c\SkypeBridge\SkypeBridge.exe pEmDRz.exe File opened for modification C:\Program Files (x86)\Google\Update\DisabledGoogleUpdate.exe pEmDRz.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\jps.exe pEmDRz.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\ktab.exe pEmDRz.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\tnameserv.exe pEmDRz.exe File opened for modification C:\Program Files\Mozilla Firefox\maintenanceservice_installer.exe pEmDRz.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MicrosoftOfficeHub_18.1903.1152.0_x64__8wekyb3d8bbwe\LocalBridge.exe pEmDRz.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MicrosoftSolitaireCollection_4.4.8204.0_x64__8wekyb3d8bbwe\Microsoft.MicrosoftSolitaireCollection.exe pEmDRz.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsCamera_2018.826.98.0_x64__8wekyb3d8bbwe\WindowsCamera.exe pEmDRz.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.ZuneMusic_10.19071.19011.0_x64__8wekyb3d8bbwe\Music.UI.exe pEmDRz.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.549981C3F5F10_1.1911.21713.0_x64__8wekyb3d8bbwe\Win32Bridge.Server.exe pEmDRz.exe File opened for modification C:\Program Files (x86)\Google\Update\1.3.36.371\GoogleUpdateCore.exe pEmDRz.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\CLVIEW.EXE pEmDRz.exe File opened for modification C:\Program Files\Mozilla Firefox\pingsender.exe pEmDRz.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrServicesUpdater.exe pEmDRz.exe File opened for modification C:\Program Files (x86)\Google\Update\1.3.36.371\GoogleCrashHandler64.exe pEmDRz.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\jstack.exe pEmDRz.exe File opened for modification C:\Program Files\Java\jre-1.8\bin\ssvagent.exe pEmDRz.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\IEContentService.exe pEmDRz.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.DesktopAppInstaller_1.0.30251.0_x64__8wekyb3d8bbwe\AppInstallerPythonRedirector.exe pEmDRz.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MixedReality.Portal_2000.19081.1301.0_x64__8wekyb3d8bbwe\MixedRealityPortal.Brokered.exe pEmDRz.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroTextExtractor.exe pEmDRz.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\javadoc.exe pEmDRz.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\java.exe pEmDRz.exe File opened for modification C:\Program Files\Java\jdk-1.8\jre\bin\keytool.exe pEmDRz.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.SkypeApp_14.53.77.0_x64__kzf8qxf38zg5c\SkypeBackgroundHost.exe pEmDRz.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\orbd.exe pEmDRz.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\jar.exe pEmDRz.exe File opened for modification C:\Program Files\Java\jdk-1.8\jre\bin\javacpl.exe pEmDRz.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\Smart Tag\SmartTagInstall.exe pEmDRz.exe File opened for modification C:\Program Files\Microsoft Office 15\ClientX64\OfficeClickToRun.exe pEmDRz.exe File opened for modification C:\Program Files\Windows Security\BrowserCore\BrowserCore.exe pEmDRz.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\keytool.exe pEmDRz.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Analysis Services\AS OLEDB\140\SQLDumper.exe pEmDRz.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.GetHelp_10.1706.13331.0_x64__8wekyb3d8bbwe\GetHelp.exe pEmDRz.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MixedReality.Portal_2000.19081.1301.0_x64__8wekyb3d8bbwe\MixedRealityPortal.exe pEmDRz.exe File opened for modification C:\Program Files\Windows Mail\wab.exe pEmDRz.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Microsoft3DViewer_6.1908.2042.0_x64__8wekyb3d8bbwe\View3D.ResourceResolver.exe pEmDRz.exe File opened for modification C:\Program Files\Google\Chrome\Application\123.0.6312.123\Installer\chrmstp.exe pEmDRz.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\jarsigner.exe pEmDRz.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\java-rmi.exe pEmDRz.exe File opened for modification C:\Program Files\Java\jre-1.8\bin\jjs.exe pEmDRz.exe File opened for modification C:\Program Files (x86)\Windows Mail\wab.exe pEmDRz.exe File opened for modification C:\Program Files\7-Zip\7zG.exe pEmDRz.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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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 2025-02-24_9a5f791f20c3197d9eebf4d59b9be4e7_bkransomware_wapomi.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language pEmDRz.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 4080 wrote to memory of 2824 4080 2025-02-24_9a5f791f20c3197d9eebf4d59b9be4e7_bkransomware_wapomi.exe 85 PID 4080 wrote to memory of 2824 4080 2025-02-24_9a5f791f20c3197d9eebf4d59b9be4e7_bkransomware_wapomi.exe 85 PID 4080 wrote to memory of 2824 4080 2025-02-24_9a5f791f20c3197d9eebf4d59b9be4e7_bkransomware_wapomi.exe 85 PID 2824 wrote to memory of 4964 2824 pEmDRz.exe 96 PID 2824 wrote to memory of 4964 2824 pEmDRz.exe 96 PID 2824 wrote to memory of 4964 2824 pEmDRz.exe 96
Processes
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C:\Users\Admin\AppData\Local\Temp\2025-02-24_9a5f791f20c3197d9eebf4d59b9be4e7_bkransomware_wapomi.exe"C:\Users\Admin\AppData\Local\Temp\2025-02-24_9a5f791f20c3197d9eebf4d59b9be4e7_bkransomware_wapomi.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4080 -
C:\Users\Admin\AppData\Local\Temp\pEmDRz.exeC:\Users\Admin\AppData\Local\Temp\pEmDRz.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:2824 -
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\1cd401f8.bat" "3⤵
- System Location Discovery: System Language Discovery
PID:4964
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
187B
MD57e9b7cbc33a1616e9bec81960584d55c
SHA1cce96e150167c36732aaf62229cf1b3b4a21f843
SHA256792355849474caffb582421c1676a6c8ac79dc34edb2c3fdf719d2674cc1b180
SHA512f449ede0d693d15caa85e765bea85c08c08cc34b9c3a6a1ba5855f1411a6c4d63111047b52dad6b80764ae1b4dbcc6de9252f12a3c16d56ab22123b923e6a495
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Filesize
15KB
MD556b2c3810dba2e939a8bb9fa36d3cf96
SHA199ee31cd4b0d6a4b62779da36e0eeecdd80589fc
SHA2564354970ccc7cd6bb16318f132c34f6a1b3d5c2ea7ff53e1c9271905527f2db07
SHA51227812a9a034d7bd2ca73b337ae9e0b6dc79c38cfd1a2c6ac9d125d3cc8fa563c401a40d22155811d5054e5baa8cf8c8e7e03925f25fa856a9ba9dea708d15b4e