Analysis
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max time kernel
151s -
max time network
173s -
platform
windows10-2004_x64 -
resource
win10v2004-en-20220113 -
submitted
08/02/2022, 17:30
Behavioral task
behavioral1
Sample
b8e1c2faba54c996024d3d9695e0b9e8547dd65b7a0f4c16d1f69a0c5596a1b5.exe
Resource
win7-en-20211208
Behavioral task
behavioral2
Sample
b8e1c2faba54c996024d3d9695e0b9e8547dd65b7a0f4c16d1f69a0c5596a1b5.exe
Resource
win10v2004-en-20220113
General
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Target
b8e1c2faba54c996024d3d9695e0b9e8547dd65b7a0f4c16d1f69a0c5596a1b5.exe
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Size
3.0MB
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MD5
18d677163ec5b5be2f78051cd465f13f
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SHA1
a9ece82cb71de649fec043b19567b07258d3a8bf
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SHA256
b8e1c2faba54c996024d3d9695e0b9e8547dd65b7a0f4c16d1f69a0c5596a1b5
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SHA512
6c6b9bba0782e57dc799f1fedc8f2f0b4a5117701348fa5f94fd32820b963dc03cef8bb161dd012336c13468be9d73010f8d9ebd10ad72814b7b7f75d9ff58bb
Malware Config
Signatures
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Executes dropped EXE 1 IoCs
pid Process 2244 3.exe -
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-1-5-21-1346565761-3498240568-4147300184-1000\Control Panel\International\Geo\Nation b8e1c2faba54c996024d3d9695e0b9e8547dd65b7a0f4c16d1f69a0c5596a1b5.exe -
Drops file in Program Files directory 4 IoCs
description ioc Process File opened for modification C:\Program Files\TeamViewer 3.exe File created C:\Program Files\TeamViewer\__tmp_rar_sfx_access_check_30264765 3.exe File created C:\Program Files\TeamViewer\TeamViewer_Service.exe 3.exe File opened for modification C:\Program Files\TeamViewer\TeamViewer_Service.exe 3.exe -
Drops file in Windows directory 8 IoCs
description ioc Process File opened for modification C:\Windows\SoftwareDistribution\DataStore\DataStore.edb svchost.exe File opened for modification C:\Windows\SoftwareDistribution\DataStore\DataStore.jfm svchost.exe File opened for modification C:\Windows\SoftwareDistribution\ReportingEvents.log svchost.exe File opened for modification C:\Windows\Logs\CBS\CBS.log TiWorker.exe File opened for modification C:\Windows\WinSxS\pending.xml TiWorker.exe File opened for modification C:\Windows\WindowsUpdate.log svchost.exe File opened for modification C:\Windows\SoftwareDistribution\DataStore\Logs\edb.chk svchost.exe File opened for modification C:\Windows\SoftwareDistribution\DataStore\Logs\edb.log svchost.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeShutdownPrivilege 2984 svchost.exe Token: SeCreatePagefilePrivilege 2984 svchost.exe Token: SeShutdownPrivilege 2984 svchost.exe Token: SeCreatePagefilePrivilege 2984 svchost.exe Token: SeShutdownPrivilege 2984 svchost.exe Token: SeCreatePagefilePrivilege 2984 svchost.exe Token: SeSecurityPrivilege 2760 TiWorker.exe Token: SeRestorePrivilege 2760 TiWorker.exe Token: SeBackupPrivilege 2760 TiWorker.exe Token: SeBackupPrivilege 2760 TiWorker.exe Token: SeRestorePrivilege 2760 TiWorker.exe Token: SeSecurityPrivilege 2760 TiWorker.exe Token: SeBackupPrivilege 2760 TiWorker.exe Token: SeRestorePrivilege 2760 TiWorker.exe Token: SeSecurityPrivilege 2760 TiWorker.exe Token: SeBackupPrivilege 2760 TiWorker.exe Token: SeRestorePrivilege 2760 TiWorker.exe Token: SeSecurityPrivilege 2760 TiWorker.exe Token: SeBackupPrivilege 2760 TiWorker.exe Token: SeRestorePrivilege 2760 TiWorker.exe Token: SeSecurityPrivilege 2760 TiWorker.exe Token: SeBackupPrivilege 2760 TiWorker.exe Token: SeRestorePrivilege 2760 TiWorker.exe Token: SeSecurityPrivilege 2760 TiWorker.exe Token: SeBackupPrivilege 2760 TiWorker.exe Token: SeRestorePrivilege 2760 TiWorker.exe Token: SeSecurityPrivilege 2760 TiWorker.exe Token: SeBackupPrivilege 2760 TiWorker.exe Token: SeRestorePrivilege 2760 TiWorker.exe Token: SeSecurityPrivilege 2760 TiWorker.exe Token: SeBackupPrivilege 2760 TiWorker.exe Token: SeRestorePrivilege 2760 TiWorker.exe Token: SeSecurityPrivilege 2760 TiWorker.exe Token: SeBackupPrivilege 2760 TiWorker.exe Token: SeRestorePrivilege 2760 TiWorker.exe Token: SeSecurityPrivilege 2760 TiWorker.exe Token: SeBackupPrivilege 2760 TiWorker.exe Token: SeRestorePrivilege 2760 TiWorker.exe Token: SeSecurityPrivilege 2760 TiWorker.exe Token: SeBackupPrivilege 2760 TiWorker.exe Token: SeRestorePrivilege 2760 TiWorker.exe Token: SeSecurityPrivilege 2760 TiWorker.exe Token: SeBackupPrivilege 2760 TiWorker.exe Token: SeRestorePrivilege 2760 TiWorker.exe Token: SeSecurityPrivilege 2760 TiWorker.exe Token: SeBackupPrivilege 2760 TiWorker.exe Token: SeRestorePrivilege 2760 TiWorker.exe Token: SeSecurityPrivilege 2760 TiWorker.exe Token: SeBackupPrivilege 2760 TiWorker.exe Token: SeRestorePrivilege 2760 TiWorker.exe Token: SeSecurityPrivilege 2760 TiWorker.exe Token: SeBackupPrivilege 2760 TiWorker.exe Token: SeRestorePrivilege 2760 TiWorker.exe Token: SeSecurityPrivilege 2760 TiWorker.exe Token: SeBackupPrivilege 2760 TiWorker.exe Token: SeRestorePrivilege 2760 TiWorker.exe Token: SeSecurityPrivilege 2760 TiWorker.exe Token: SeBackupPrivilege 2760 TiWorker.exe Token: SeRestorePrivilege 2760 TiWorker.exe Token: SeSecurityPrivilege 2760 TiWorker.exe Token: SeBackupPrivilege 2760 TiWorker.exe Token: SeRestorePrivilege 2760 TiWorker.exe Token: SeSecurityPrivilege 2760 TiWorker.exe Token: SeBackupPrivilege 2760 TiWorker.exe -
Suspicious use of WriteProcessMemory 5 IoCs
description pid Process procid_target PID 1700 wrote to memory of 3392 1700 b8e1c2faba54c996024d3d9695e0b9e8547dd65b7a0f4c16d1f69a0c5596a1b5.exe 82 PID 1700 wrote to memory of 3392 1700 b8e1c2faba54c996024d3d9695e0b9e8547dd65b7a0f4c16d1f69a0c5596a1b5.exe 82 PID 3392 wrote to memory of 2244 3392 cmd.exe 85 PID 3392 wrote to memory of 2244 3392 cmd.exe 85 PID 3392 wrote to memory of 2244 3392 cmd.exe 85
Processes
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C:\Users\Admin\AppData\Local\Temp\b8e1c2faba54c996024d3d9695e0b9e8547dd65b7a0f4c16d1f69a0c5596a1b5.exe"C:\Users\Admin\AppData\Local\Temp\b8e1c2faba54c996024d3d9695e0b9e8547dd65b7a0f4c16d1f69a0c5596a1b5.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1700 -
C:\Windows\system32\cmd.exe"C:\Windows\sysnative\cmd.exe" /c "C:\Users\Admin\AppData\Local\Temp\975B.tmp\975C.bat C:\Users\Admin\AppData\Local\Temp\b8e1c2faba54c996024d3d9695e0b9e8547dd65b7a0f4c16d1f69a0c5596a1b5.exe"2⤵
- Suspicious use of WriteProcessMemory
PID:3392 -
C:\Users\Admin\AppData\Local\Temp\975B.tmp\3.exe3.exe3⤵
- Executes dropped EXE
- Drops file in Program Files directory
PID:2244
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs -p -s wuauserv1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:2984
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C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exeC:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe -Embedding1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:2760