Analysis
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max time kernel
129s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
28-12-2024 17:44
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
9b1cb48ed91b98d32b6a9ca70013154967f312b848a3bb28888345c2f1e25b69.exe
Resource
win7-20240903-en
windows7-x64
12 signatures
150 seconds
General
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Target
9b1cb48ed91b98d32b6a9ca70013154967f312b848a3bb28888345c2f1e25b69.exe
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Size
12.0MB
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MD5
d164266b0d36285a526cb2686a053d05
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SHA1
a538acac544379ac205e3ebb6b67dd85c0a08667
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SHA256
9b1cb48ed91b98d32b6a9ca70013154967f312b848a3bb28888345c2f1e25b69
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SHA512
7ef006eb29c2741aa1be702404f41f9b09bbc797607a4a419a3f1fdda84b35d279d5dd29a7d805bc45f44c3b32223ab6614e499dd3c92a0b3f502498a47bf188
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SSDEEP
49152:s/KE1ld3/wAyJxVZp2bnbJ5eA+zsFTCTMqQ:s/KU9/pyJx9Y5elA0T
Malware Config
Extracted
Family
bdaejec
C2
ddos.dnsnb8.net
Signatures
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Bdaejec family
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Detects Bdaejec Backdoor. 2 IoCs
Bdaejec is backdoor written in C++.
resource yara_rule behavioral2/memory/1148-6-0x0000000000A90000-0x0000000000A99000-memory.dmp family_bdaejec_backdoor behavioral2/memory/1148-10-0x0000000000A90000-0x0000000000A99000-memory.dmp family_bdaejec_backdoor -
resource yara_rule behavioral2/files/0x000c000000023b1b-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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation hstemk.exe -
Executes dropped EXE 1 IoCs
pid Process 1148 hstemk.exe -
Drops file in Program Files directory 64 IoCs
description ioc Process File opened for modification C:\Program Files\Java\jdk-1.8\bin\jcmd.exe hstemk.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\FullTrustNotifier.exe hstemk.exe File opened for modification C:\Program Files (x86)\Google\Update\Install\{87F23B05-A117-4666-BB8C-A9C77E6BFB56}\chrome_installer.exe hstemk.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\MSOHTMED.EXE hstemk.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroTextExtractor.exe hstemk.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\Common.DBConnection.exe hstemk.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsCalculator_10.1906.55.0_x64__8wekyb3d8bbwe\Calculator.exe hstemk.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\jdb.exe hstemk.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\jps.exe hstemk.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\jsadebugd.exe hstemk.exe File opened for modification C:\Program Files\Java\jdk-1.8\jre\bin\javaw.exe hstemk.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\EXCEL.EXE hstemk.exe File opened for modification C:\Program Files\Java\jdk-1.8\jre\bin\tnameserv.exe hstemk.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\SkypeSrv\SKYPESERVER.EXE hstemk.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Analysis Services\AS OLEDB\140\SQLDumper.exe hstemk.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.VP9VideoExtensions_1.0.22681.0_x64__8wekyb3d8bbwe\codecpacks.VP9.exe hstemk.exe File opened for modification C:\Program Files\VideoLAN\VLC\vlc-cache-gen.exe hstemk.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MicrosoftSolitaireCollection_4.4.8204.0_x64__8wekyb3d8bbwe\Solitaire.exe hstemk.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\HxOutlook.exe hstemk.exe File opened for modification C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\createdump.exe hstemk.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\jdeps.exe hstemk.exe File opened for modification C:\Program Files\Java\jdk-1.8\jre\bin\javacpl.exe hstemk.exe File opened for modification C:\Program Files\Java\jre-1.8\bin\jp2launcher.exe hstemk.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\Wordconv.exe hstemk.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\Common.DBConnection64.exe hstemk.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\HxTsr.exe hstemk.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\arh.exe hstemk.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\Browser\WCChromeExtn\WCChromeNativeMessagingHost.exe hstemk.exe File opened for modification C:\Program Files\Java\jdk-1.8\jre\bin\jabswitch.exe hstemk.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MicrosoftStickyNotes_3.6.73.0_x64__8wekyb3d8bbwe\Microsoft.Notes.exe hstemk.exe File opened for modification C:\Program Files (x86)\Google\Update\DisabledGoogleUpdate.exe hstemk.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\idlj.exe hstemk.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\unpack200.exe hstemk.exe File opened for modification C:\Program Files\Java\jdk-1.8\jre\bin\kinit.exe hstemk.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 hstemk.exe File opened for modification C:\Program Files\Mozilla Firefox\updater.exe hstemk.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AdobeCollabSync.exe hstemk.exe File opened for modification C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\createdump.exe hstemk.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\jar.exe hstemk.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\MSQRY32.EXE hstemk.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\Common.ShowHelp.exe hstemk.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MicrosoftSolitaireCollection_4.4.8204.0_x64__8wekyb3d8bbwe\Microsoft.MicrosoftSolitaireCollection.exe hstemk.exe File opened for modification C:\Program Files\VideoLAN\VLC\vlc.exe hstemk.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WebpImageExtension_1.0.22753.0_x64__8wekyb3d8bbwe\codecpacks.webp.exe hstemk.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.XboxGamingOverlay_2.34.28001.0_x64__8wekyb3d8bbwe\GameBar.exe hstemk.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\plug_ins\pi_brokers\64BitMAPIBroker.exe hstemk.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.StorePurchaseApp_11811.1001.18.0_x64__8wekyb3d8bbwe\StoreExperienceHost.exe hstemk.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroBroker.exe hstemk.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\LogTransport2.exe hstemk.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\extcheck.exe hstemk.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\javac.exe hstemk.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\rmiregistry.exe hstemk.exe File opened for modification C:\Program Files\Java\jre-1.8\bin\ktab.exe hstemk.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\XLICONS.EXE hstemk.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Getstarted_8.2.22942.0_x64__8wekyb3d8bbwe\fmui\fmui.exe hstemk.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.HEIFImageExtension_1.0.22742.0_x64__8wekyb3d8bbwe\codecpacks.heif.exe hstemk.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroRd32Info.exe hstemk.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\jstack.exe hstemk.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\kinit.exe hstemk.exe File opened for modification C:\Program Files\Java\jdk-1.8\jre\bin\keytool.exe hstemk.exe File opened for modification C:\Program Files\Mozilla Firefox\uninstall\helper.exe hstemk.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.549981C3F5F10_1.1911.21713.0_x64__8wekyb3d8bbwe\Win32Bridge.Server.exe hstemk.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MixedReality.Portal_2000.19081.1301.0_x64__8wekyb3d8bbwe\MixedRealityPortal.exe hstemk.exe File opened for modification C:\Program Files\Java\jre-1.8\bin\klist.exe hstemk.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 9b1cb48ed91b98d32b6a9ca70013154967f312b848a3bb28888345c2f1e25b69.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language hstemk.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 3496 9b1cb48ed91b98d32b6a9ca70013154967f312b848a3bb28888345c2f1e25b69.exe -
Suspicious use of SetWindowsHookEx 3 IoCs
pid Process 3496 9b1cb48ed91b98d32b6a9ca70013154967f312b848a3bb28888345c2f1e25b69.exe 3496 9b1cb48ed91b98d32b6a9ca70013154967f312b848a3bb28888345c2f1e25b69.exe 3496 9b1cb48ed91b98d32b6a9ca70013154967f312b848a3bb28888345c2f1e25b69.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 3496 wrote to memory of 1148 3496 9b1cb48ed91b98d32b6a9ca70013154967f312b848a3bb28888345c2f1e25b69.exe 82 PID 3496 wrote to memory of 1148 3496 9b1cb48ed91b98d32b6a9ca70013154967f312b848a3bb28888345c2f1e25b69.exe 82 PID 3496 wrote to memory of 1148 3496 9b1cb48ed91b98d32b6a9ca70013154967f312b848a3bb28888345c2f1e25b69.exe 82 PID 1148 wrote to memory of 3896 1148 hstemk.exe 93 PID 1148 wrote to memory of 3896 1148 hstemk.exe 93 PID 1148 wrote to memory of 3896 1148 hstemk.exe 93
Processes
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C:\Users\Admin\AppData\Local\Temp\9b1cb48ed91b98d32b6a9ca70013154967f312b848a3bb28888345c2f1e25b69.exe"C:\Users\Admin\AppData\Local\Temp\9b1cb48ed91b98d32b6a9ca70013154967f312b848a3bb28888345c2f1e25b69.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3496 -
C:\Users\Admin\AppData\Local\Temp\hstemk.exeC:\Users\Admin\AppData\Local\Temp\hstemk.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:1148 -
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\113d3367.bat" "3⤵
- System Location Discovery: System Language Discovery
PID:3896
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
187B
MD5f01d4af9275729d37cf67ffd35d12fd3
SHA103845009b796e2aee6a66e48d73cb9e7ea572fc9
SHA2565c3b66c8a123b3b26ab405df1c8655842c998854f352b43653dab324d3c098e1
SHA5121074baee8c9d389e922adc6c513d15fc5b7d5a24985cf9bced0c5b9062adbce719902160bb4af196ec2a97d165f1fbae9cde9e6259dc75013395814772a64707
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Filesize
15KB
MD556b2c3810dba2e939a8bb9fa36d3cf96
SHA199ee31cd4b0d6a4b62779da36e0eeecdd80589fc
SHA2564354970ccc7cd6bb16318f132c34f6a1b3d5c2ea7ff53e1c9271905527f2db07
SHA51227812a9a034d7bd2ca73b337ae9e0b6dc79c38cfd1a2c6ac9d125d3cc8fa563c401a40d22155811d5054e5baa8cf8c8e7e03925f25fa856a9ba9dea708d15b4e