Analysis
- max time kernel
146s - max time network
136s - platform
windows10-2004_x64 - resource
win10v2004-en-20220113 - submitted
11/02/2022, 18:13
Static task
static1
Behavioral task
behavioral1
Sample
db601737341d075854a7a92dcfe2c9f9.exe
Resource
win7-en-20211208
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
db601737341d075854a7a92dcfe2c9f9.exe
Resource
win10v2004-en-20220113
windows10-2004_x64
0 signatures
0 seconds
General
- Target db601737341d075854a7a92dcfe2c9f9.exe
- Size 294KB
- Sample220211-wtqx2aefap
- SHA256 76d07b33364445e08dd5306a4e98d34edb6895a8269e9bb5aa9ef80e1cb83b2e
- MD5 db601737341d075854a7a92dcfe2c9f9
- SHA1 16b3755c07814422eb01664b67370e31027c0f3d
- SHA512 b76759f28bcb68453dc32384f8bed1db071642f4ce5d9c84b14f2b172937b9a62f6e55857b74e14ca6e4c2a0f20bc6a50ab0e37fa36e59b364bdd2b108799c80
- MD5 SHA1 SHA512
Score
8/10
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 4100 lzxupx.exe - Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kdbhxeuc = "C:\\Users\\Admin\\AppData\\Roaming\\joexhtvg\\hojfmbr.exe" lzxupx.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.
- Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeShutdownPrivilege 372 svchost.exe Token: SeCreatePagefilePrivilege 372 svchost.exe Token: SeShutdownPrivilege 372 svchost.exe Token: SeCreatePagefilePrivilege 372 svchost.exe Token: SeShutdownPrivilege 372 svchost.exe Token: SeCreatePagefilePrivilege 372 svchost.exe Token: SeSecurityPrivilege 4900 TiWorker.exe Token: SeRestorePrivilege 4900 TiWorker.exe Token: SeBackupPrivilege 4900 TiWorker.exe Token: SeBackupPrivilege 4900 TiWorker.exe Token: SeRestorePrivilege 4900 TiWorker.exe Token: SeSecurityPrivilege 4900 TiWorker.exe Token: SeBackupPrivilege 4900 TiWorker.exe Token: SeRestorePrivilege 4900 TiWorker.exe Token: SeSecurityPrivilege 4900 TiWorker.exe Token: SeBackupPrivilege 4900 TiWorker.exe Token: SeRestorePrivilege 4900 TiWorker.exe Token: SeSecurityPrivilege 4900 TiWorker.exe Token: SeBackupPrivilege 4900 TiWorker.exe Token: SeRestorePrivilege 4900 TiWorker.exe Token: SeSecurityPrivilege 4900 TiWorker.exe Token: SeBackupPrivilege 4900 TiWorker.exe Token: SeRestorePrivilege 4900 TiWorker.exe Token: SeSecurityPrivilege 4900 TiWorker.exe Token: SeBackupPrivilege 4900 TiWorker.exe Token: SeRestorePrivilege 4900 TiWorker.exe Token: SeSecurityPrivilege 4900 TiWorker.exe Token: SeBackupPrivilege 4900 TiWorker.exe Token: SeRestorePrivilege 4900 TiWorker.exe Token: SeSecurityPrivilege 4900 TiWorker.exe Token: SeBackupPrivilege 4900 TiWorker.exe Token: SeRestorePrivilege 4900 TiWorker.exe Token: SeSecurityPrivilege 4900 TiWorker.exe Token: SeBackupPrivilege 4900 TiWorker.exe Token: SeRestorePrivilege 4900 TiWorker.exe Token: SeSecurityPrivilege 4900 TiWorker.exe Token: SeBackupPrivilege 4900 TiWorker.exe Token: SeRestorePrivilege 4900 TiWorker.exe Token: SeSecurityPrivilege 4900 TiWorker.exe Token: SeBackupPrivilege 4900 TiWorker.exe Token: SeRestorePrivilege 4900 TiWorker.exe Token: SeSecurityPrivilege 4900 TiWorker.exe Token: SeBackupPrivilege 4900 TiWorker.exe Token: SeRestorePrivilege 4900 TiWorker.exe Token: SeSecurityPrivilege 4900 TiWorker.exe Token: SeBackupPrivilege 4900 TiWorker.exe Token: SeRestorePrivilege 4900 TiWorker.exe Token: SeSecurityPrivilege 4900 TiWorker.exe Token: SeBackupPrivilege 4900 TiWorker.exe Token: SeRestorePrivilege 4900 TiWorker.exe Token: SeSecurityPrivilege 4900 TiWorker.exe Token: SeBackupPrivilege 4900 TiWorker.exe Token: SeRestorePrivilege 4900 TiWorker.exe Token: SeSecurityPrivilege 4900 TiWorker.exe Token: SeBackupPrivilege 4900 TiWorker.exe Token: SeRestorePrivilege 4900 TiWorker.exe Token: SeSecurityPrivilege 4900 TiWorker.exe Token: SeBackupPrivilege 4900 TiWorker.exe Token: SeRestorePrivilege 4900 TiWorker.exe Token: SeSecurityPrivilege 4900 TiWorker.exe Token: SeBackupPrivilege 4900 TiWorker.exe Token: SeRestorePrivilege 4900 TiWorker.exe Token: SeSecurityPrivilege 4900 TiWorker.exe Token: SeBackupPrivilege 4900 TiWorker.exe - Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 2468 wrote to memory of 4100 2468 db601737341d075854a7a92dcfe2c9f9.exe 82 PID 2468 wrote to memory of 4100 2468 db601737341d075854a7a92dcfe2c9f9.exe 82 PID 2468 wrote to memory of 4100 2468 db601737341d075854a7a92dcfe2c9f9.exe 82 PID 4100 wrote to memory of 4608 4100 lzxupx.exe 83 PID 4100 wrote to memory of 4608 4100 lzxupx.exe 83 PID 4100 wrote to memory of 4608 4100 lzxupx.exe 83
Processes
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C:\Users\Admin\AppData\Local\Temp\db601737341d075854a7a92dcfe2c9f9.exe"C:\Users\Admin\AppData\Local\Temp\db601737341d075854a7a92dcfe2c9f9.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:2468 -
C:\Users\Admin\AppData\Local\Temp\lzxupx.exeC:\Users\Admin\AppData\Local\Temp\lzxupx.exe C:\Users\Admin\AppData\Local\Temp\mhwrt2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:4100 -
C:\Users\Admin\AppData\Local\Temp\lzxupx.exeC:\Users\Admin\AppData\Local\Temp\lzxupx.exe C:\Users\Admin\AppData\Local\Temp\mhwrt3⤵PID:4608
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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:372
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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:4900