Analysis
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max time kernel
149s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240709-en -
resource tags
arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system -
submitted
24-07-2024 11:57
Static task
static1
Behavioral task
behavioral1
Sample
1E31A6DE957ADB7A23E155EF8E9F80E67DC763443053E0014FBA9E91F4EEBC6F.exe
Resource
win7-20240708-en
General
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Target
1E31A6DE957ADB7A23E155EF8E9F80E67DC763443053E0014FBA9E91F4EEBC6F.exe
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Size
240KB
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MD5
9ad0e9c3ba18150e9bb1176cd3cc5cfb
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SHA1
ca69a444c9bdb2b80411cd9ba8a3be06a87053c2
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SHA256
69b22d283fd4a6ce1c9f69f610449b016fdbb7ac1f8c23e199b3c72d7f75c61d
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SHA512
78af683bfb37d139a1cb3e3050b1a7075443197fec209d376aafdaa0694590de1a9103dd82725649dd4b35d7485e5b7a92f74d59a531ebe06fef513e15f3650b
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SSDEEP
1536:YzlKjIgWITA+dAGkDEQqrj0OzgFx3wyU0SyvmQm3ZH459VSypXoDzjD7GCq2iW7z:OlKjIbAUFzU0Scm13259VSypXAv/GCH
Malware Config
Extracted
systembc
31.44.185.6:4001
31.44.185.11:4001
Signatures
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Processes:
resource yara_rule C:\Users\Admin\AppData\Local\Temp\CaEsb.exe aspack_v212_v242 -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
CaEsb.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-1705699165-553239100-4129523827-1000\Control Panel\International\Geo\Nation CaEsb.exe -
Executes dropped EXE 3 IoCs
Processes:
CaEsb.exebeavn.exeCaEsb.exepid process 4516 CaEsb.exe 3760 beavn.exe 4512 CaEsb.exe -
Drops file in Program Files directory 64 IoCs
Processes:
CaEsb.exedescription ioc process File opened for modification C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\createdump.exe CaEsb.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\jar.exe CaEsb.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.DesktopAppInstaller_1.0.30251.0_x64__8wekyb3d8bbwe\AppInstallerPythonRedirector.exe CaEsb.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Microsoft3DViewer_6.1908.2042.0_x64__8wekyb3d8bbwe\View3D.ResourceResolver.exe CaEsb.exe File opened for modification C:\Program Files (x86)\Mozilla Maintenance Service\maintenanceservice.exe CaEsb.exe File opened for modification C:\Program Files\Java\jre-1.8\bin\ssvagent.exe CaEsb.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\DATABASECOMPARE.EXE CaEsb.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\SPREADSHEETCOMPARE.EXE CaEsb.exe File opened for modification C:\Program Files\Java\jdk-1.8\jre\bin\kinit.exe CaEsb.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\Common.DBConnection64.exe CaEsb.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MixedReality.Portal_2000.19081.1301.0_x64__8wekyb3d8bbwe\MixedRealityPortal.Brokered.exe CaEsb.exe File opened for modification C:\Program Files\7-Zip\Uninstall.exe CaEsb.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\Smart Tag\SmartTagInstall.exe CaEsb.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Microsoft3DViewer_6.1908.2042.0_x64__8wekyb3d8bbwe\3DViewer.exe CaEsb.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MicrosoftOfficeHub_18.1903.1152.0_x64__8wekyb3d8bbwe\LocalBridge.exe CaEsb.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MixedReality.Portal_2000.19081.1301.0_x64__8wekyb3d8bbwe\MixedRealityPortal.exe CaEsb.exe File opened for modification C:\Program Files\Java\jre-1.8\bin\servertool.exe CaEsb.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MSPaint_6.1907.29027.0_x64__8wekyb3d8bbwe\PaintStudio.View.exe CaEsb.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\javaws.exe CaEsb.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\Eula.exe CaEsb.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\javadoc.exe CaEsb.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\HxCalendarAppImm.exe CaEsb.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\javafxpackager.exe CaEsb.exe File opened for modification C:\Program Files\Java\jdk-1.8\jre\bin\rmid.exe CaEsb.exe File opened for modification C:\Program Files\Java\jdk-1.8\jre\bin\rmiregistry.exe CaEsb.exe File opened for modification C:\Program Files\Mozilla Firefox\uninstall\helper.exe CaEsb.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WebMediaExtensions_1.0.20875.0_x64__8wekyb3d8bbwe\Microsoft.WebMediaExtensions.exe CaEsb.exe File opened for modification C:\Program Files (x86)\Google\Update\Install\{81C44847-CFD4-4467-BC43-4620F6C2BDBD}\chrome_installer.exe CaEsb.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\wsimport.exe CaEsb.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\javah.exe CaEsb.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\jstat.exe CaEsb.exe File opened for modification C:\Program Files\Microsoft Office\root\Integration\Integrator.exe CaEsb.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\jmap.exe CaEsb.exe File opened for modification C:\Program Files\Java\jdk-1.8\jre\bin\java.exe CaEsb.exe File opened for modification C:\Program Files\Microsoft Office 15\ClientX64\IntegratedOffice.exe CaEsb.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsStore_11910.1002.5.0_x64__8wekyb3d8bbwe\WinStore.App.exe CaEsb.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.HEIFImageExtension_1.0.22742.0_x64__8wekyb3d8bbwe\codecpacks.heif.exe CaEsb.exe File opened for modification C:\Program Files\Google\Chrome\Application\123.0.6312.106\Installer\setup.exe CaEsb.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\jps.exe CaEsb.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\unpack200.exe CaEsb.exe File opened for modification C:\Program Files\Java\jre-1.8\bin\policytool.exe CaEsb.exe File opened for modification C:\Program Files (x86)\Google\Update\1.3.36.371\GoogleUpdateOnDemand.exe CaEsb.exe File opened for modification C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\createdump.exe CaEsb.exe File opened for modification C:\Program Files\Java\jre-1.8\bin\rmiregistry.exe CaEsb.exe File opened for modification C:\Program Files\Microsoft Office\root\Client\AppVLP.exe CaEsb.exe File opened for modification C:\Program Files\Mozilla Firefox\crashreporter.exe CaEsb.exe File opened for modification C:\Program Files\Mozilla Firefox\maintenanceservice.exe CaEsb.exe File opened for modification C:\Program Files\Google\Chrome\Application\123.0.6312.106\elevation_service.exe CaEsb.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\wsgen.exe CaEsb.exe File opened for modification C:\Program Files\Java\jdk-1.8\jre\bin\jp2launcher.exe CaEsb.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\GRAPH.EXE CaEsb.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\SELFCERT.EXE CaEsb.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.549981C3F5F10_1.1911.21713.0_x64__8wekyb3d8bbwe\Win32Bridge.Server.exe CaEsb.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.XboxIdentityProvider_12.50.6001.0_x64__8wekyb3d8bbwe\XboxIdp.exe CaEsb.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\serialver.exe CaEsb.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\SDXHelper.exe CaEsb.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.549981C3F5F10_1.1911.21713.0_x64__8wekyb3d8bbwe\Cortana.exe CaEsb.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsMaps_5.1906.1972.0_x64__8wekyb3d8bbwe\Maps.exe CaEsb.exe File opened for modification C:\Program Files\7-Zip\7zFM.exe CaEsb.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\jarsigner.exe CaEsb.exe File opened for modification C:\Program Files\Java\jdk-1.8\jre\bin\klist.exe CaEsb.exe File opened for modification C:\Program Files\VideoLAN\VLC\vlc.exe CaEsb.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\jdeps.exe CaEsb.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\msoadfsb.exe CaEsb.exe -
Drops file in Windows directory 2 IoCs
Processes:
1E31A6DE957ADB7A23E155EF8E9F80E67DC763443053E0014FBA9E91F4EEBC6F.exedescription ioc process File created C:\Windows\Tasks\beavn.job 1E31A6DE957ADB7A23E155EF8E9F80E67DC763443053E0014FBA9E91F4EEBC6F.exe File opened for modification C:\Windows\Tasks\beavn.job 1E31A6DE957ADB7A23E155EF8E9F80E67DC763443053E0014FBA9E91F4EEBC6F.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Program crash 1 IoCs
Processes:
WerFault.exepid pid_target process target process 1724 4584 WerFault.exe 1E31A6DE957ADB7A23E155EF8E9F80E67DC763443053E0014FBA9E91F4EEBC6F.exe -
System Location Discovery: System Language Discovery 1 TTPs 6 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
Processes:
1E31A6DE957ADB7A23E155EF8E9F80E67DC763443053E0014FBA9E91F4EEBC6F.exeCaEsb.execmd.exebeavn.exeCaEsb.execmd.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 1E31A6DE957ADB7A23E155EF8E9F80E67DC763443053E0014FBA9E91F4EEBC6F.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language CaEsb.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language beavn.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language CaEsb.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe -
Modifies data under HKEY_USERS 5 IoCs
Processes:
CaEsb.exedescription ioc process Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" CaEsb.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ CaEsb.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" CaEsb.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" CaEsb.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" CaEsb.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
1E31A6DE957ADB7A23E155EF8E9F80E67DC763443053E0014FBA9E91F4EEBC6F.exepid process 4584 1E31A6DE957ADB7A23E155EF8E9F80E67DC763443053E0014FBA9E91F4EEBC6F.exe 4584 1E31A6DE957ADB7A23E155EF8E9F80E67DC763443053E0014FBA9E91F4EEBC6F.exe -
Suspicious use of WriteProcessMemory 12 IoCs
Processes:
1E31A6DE957ADB7A23E155EF8E9F80E67DC763443053E0014FBA9E91F4EEBC6F.exeCaEsb.exebeavn.exeCaEsb.exedescription pid process target process PID 4584 wrote to memory of 4516 4584 1E31A6DE957ADB7A23E155EF8E9F80E67DC763443053E0014FBA9E91F4EEBC6F.exe CaEsb.exe PID 4584 wrote to memory of 4516 4584 1E31A6DE957ADB7A23E155EF8E9F80E67DC763443053E0014FBA9E91F4EEBC6F.exe CaEsb.exe PID 4584 wrote to memory of 4516 4584 1E31A6DE957ADB7A23E155EF8E9F80E67DC763443053E0014FBA9E91F4EEBC6F.exe CaEsb.exe PID 4516 wrote to memory of 2196 4516 CaEsb.exe cmd.exe PID 4516 wrote to memory of 2196 4516 CaEsb.exe cmd.exe PID 4516 wrote to memory of 2196 4516 CaEsb.exe cmd.exe PID 3760 wrote to memory of 4512 3760 beavn.exe CaEsb.exe PID 3760 wrote to memory of 4512 3760 beavn.exe CaEsb.exe PID 3760 wrote to memory of 4512 3760 beavn.exe CaEsb.exe PID 4512 wrote to memory of 4888 4512 CaEsb.exe cmd.exe PID 4512 wrote to memory of 4888 4512 CaEsb.exe cmd.exe PID 4512 wrote to memory of 4888 4512 CaEsb.exe cmd.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\1E31A6DE957ADB7A23E155EF8E9F80E67DC763443053E0014FBA9E91F4EEBC6F.exe"C:\Users\Admin\AppData\Local\Temp\1E31A6DE957ADB7A23E155EF8E9F80E67DC763443053E0014FBA9E91F4EEBC6F.exe"1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4584 -
C:\Users\Admin\AppData\Local\Temp\CaEsb.exeC:\Users\Admin\AppData\Local\Temp\CaEsb.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:4516 -
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\72b660fc.bat" "3⤵
- System Location Discovery: System Language Discovery
PID:2196
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4584 -s 4922⤵
- Program crash
PID:1724
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C:\ProgramData\kandcrh\beavn.exeC:\ProgramData\kandcrh\beavn.exe start1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3760 -
C:\Windows\TEMP\CaEsb.exeC:\Windows\TEMP\CaEsb.exe2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
- Suspicious use of WriteProcessMemory
PID:4512 -
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Windows\TEMP\378a5943.bat" "3⤵
- System Location Discovery: System Language Discovery
PID:4888
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 4584 -ip 45841⤵PID:1484
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
240KB
MD59ad0e9c3ba18150e9bb1176cd3cc5cfb
SHA1ca69a444c9bdb2b80411cd9ba8a3be06a87053c2
SHA25669b22d283fd4a6ce1c9f69f610449b016fdbb7ac1f8c23e199b3c72d7f75c61d
SHA51278af683bfb37d139a1cb3e3050b1a7075443197fec209d376aafdaa0694590de1a9103dd82725649dd4b35d7485e5b7a92f74d59a531ebe06fef513e15f3650b
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Filesize
4B
MD5d3b07384d113edec49eaa6238ad5ff00
SHA1f1d2d2f924e986ac86fdf7b36c94bcdf32beec15
SHA256b5bb9d8014a0f9b1d61e21e796d78dccdf1352f23cd32812f4850b878ae4944c
SHA5120cf9180a764aba863a67b6d72f0918bc131c6772642cb2dce5a34f0a702f9470ddc2bf125c12198b1995c233c34b4afd346c54a2334c350a948a51b6e8b4e6b6
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Filesize
4B
MD520879c987e2f9a916e578386d499f629
SHA1c7b33ddcc42361fdb847036fc07e880b81935d5d
SHA2569f2981a7cc4d40a2a409dc895de64253acd819d7c0011c8e80b86fe899464e31
SHA512bcdde1625364dd6dd143b45bdcec8d59cf8982aff33790d390b839f3869e0e815684568b14b555a596d616252aeeaa98dac2e6e551c9095ea11a575ff25ff84f
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Filesize
185B
MD582b8afde9b404b242ec7d096c46184df
SHA1b8c1b3d00dd6038cfb07cbf2917545a988aa50ad
SHA256c64e13ea88ca65d59a9493ef75459f4420abc4da07218139717d83703a695ee9
SHA512b089742a4c670d7744284220ad46be69654f41ae9300882755f5be23cca540fdd6a9393e75a02598a881b584c47663355c0cb3822d39c9d6dd9638e19dedbf58
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Filesize
15KB
MD5f7d21de5c4e81341eccd280c11ddcc9a
SHA1d4e9ef10d7685d491583c6fa93ae5d9105d815bd
SHA2564485df22c627fa0bb899d79aa6ff29bc5be1dbc3caa2b7a490809338d54b7794
SHA512e4553b86b083996038bacfb979ad0b86f578f95185d8efac34a77f6cc73e491d4f70e1449bbc9eb1d62f430800c1574101b270e1cb0eeed43a83049a79b636a3
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Filesize
131B
MD578f1c8381f370dc7462fc1ad87b97bc6
SHA1dd787a4547403d2bc7f2c303aa10950256cd205e
SHA2568315054f3f12561f53a6a224e97281e63aea324fbfce236124429492f45ea19e
SHA512b067e017e79ae81c448a21f910be0a8da406c2713d57a728f5ef5b498c13aa2e8cdf97d1ead8555cc6ae787e315708c98c44d1049c72c0a851010d29ddb709f2