Analysis
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max time kernel
162s -
max time network
192s -
platform
windows10-2004_x64 -
resource
win10v2004-en-20220113 -
submitted
15-02-2022 10:36
Static task
static1
Behavioral task
behavioral1
Sample
4eadab98bb726919ff7748c567a9635981a538e92b83d273b7c5ac02c0b7e40e.exe
Resource
win7-en-20211208
Behavioral task
behavioral2
Sample
4eadab98bb726919ff7748c567a9635981a538e92b83d273b7c5ac02c0b7e40e.exe
Resource
win10v2004-en-20220113
General
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Target
4eadab98bb726919ff7748c567a9635981a538e92b83d273b7c5ac02c0b7e40e.exe
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Size
736KB
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MD5
a4ed08dd58d17c8c8b5ab9c98fb65829
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SHA1
5ce970bf1623baee0c6025a7c6316bc4a2532e8a
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SHA256
4eadab98bb726919ff7748c567a9635981a538e92b83d273b7c5ac02c0b7e40e
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SHA512
3a4940bf14d1c091d2d6c3c0a9e2ee07c9835142bcdd192731880dfe7ca68a31deabc94ef0ef1edcdf8dc4af26822dd928de56be8fe9c36a3c17978f787d8733
Malware Config
Signatures
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Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs
Processes:
WerFault.exedescription pid process target process PID 764 created 660 764 WerFault.exe 4eadab98bb726919ff7748c567a9635981a538e92b83d273b7c5ac02c0b7e40e.exe -
Drops file in Windows directory 8 IoCs
Processes:
TiWorker.exesvchost.exedescription ioc process 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 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 -
Program crash 1 IoCs
Processes:
WerFault.exepid pid_target process target process 1220 660 WerFault.exe 4eadab98bb726919ff7748c567a9635981a538e92b83d273b7c5ac02c0b7e40e.exe -
Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
WerFault.exedescription ioc process Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 WerFault.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz WerFault.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString WerFault.exe -
Enumerates system info in registry 2 TTPs 2 IoCs
Processes:
WerFault.exedescription ioc process Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS WerFault.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU WerFault.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
WerFault.exepid process 1220 WerFault.exe 1220 WerFault.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
Processes:
WerFault.exesvchost.exeTiWorker.exedescription pid process Token: SeRestorePrivilege 1220 WerFault.exe Token: SeBackupPrivilege 1220 WerFault.exe Token: SeShutdownPrivilege 112 svchost.exe Token: SeCreatePagefilePrivilege 112 svchost.exe Token: SeShutdownPrivilege 112 svchost.exe Token: SeCreatePagefilePrivilege 112 svchost.exe Token: SeShutdownPrivilege 112 svchost.exe Token: SeCreatePagefilePrivilege 112 svchost.exe Token: SeSecurityPrivilege 3164 TiWorker.exe Token: SeRestorePrivilege 3164 TiWorker.exe Token: SeBackupPrivilege 3164 TiWorker.exe Token: SeBackupPrivilege 3164 TiWorker.exe Token: SeRestorePrivilege 3164 TiWorker.exe Token: SeSecurityPrivilege 3164 TiWorker.exe Token: SeBackupPrivilege 3164 TiWorker.exe Token: SeRestorePrivilege 3164 TiWorker.exe Token: SeSecurityPrivilege 3164 TiWorker.exe Token: SeBackupPrivilege 3164 TiWorker.exe Token: SeRestorePrivilege 3164 TiWorker.exe Token: SeSecurityPrivilege 3164 TiWorker.exe Token: SeBackupPrivilege 3164 TiWorker.exe Token: SeRestorePrivilege 3164 TiWorker.exe Token: SeSecurityPrivilege 3164 TiWorker.exe Token: SeBackupPrivilege 3164 TiWorker.exe Token: SeRestorePrivilege 3164 TiWorker.exe Token: SeSecurityPrivilege 3164 TiWorker.exe Token: SeBackupPrivilege 3164 TiWorker.exe Token: SeRestorePrivilege 3164 TiWorker.exe Token: SeSecurityPrivilege 3164 TiWorker.exe Token: SeBackupPrivilege 3164 TiWorker.exe Token: SeRestorePrivilege 3164 TiWorker.exe Token: SeSecurityPrivilege 3164 TiWorker.exe Token: SeBackupPrivilege 3164 TiWorker.exe Token: SeRestorePrivilege 3164 TiWorker.exe Token: SeSecurityPrivilege 3164 TiWorker.exe Token: SeBackupPrivilege 3164 TiWorker.exe Token: SeRestorePrivilege 3164 TiWorker.exe Token: SeSecurityPrivilege 3164 TiWorker.exe Token: SeBackupPrivilege 3164 TiWorker.exe Token: SeRestorePrivilege 3164 TiWorker.exe Token: SeSecurityPrivilege 3164 TiWorker.exe Token: SeBackupPrivilege 3164 TiWorker.exe Token: SeRestorePrivilege 3164 TiWorker.exe Token: SeSecurityPrivilege 3164 TiWorker.exe Token: SeBackupPrivilege 3164 TiWorker.exe Token: SeRestorePrivilege 3164 TiWorker.exe Token: SeSecurityPrivilege 3164 TiWorker.exe Token: SeBackupPrivilege 3164 TiWorker.exe Token: SeRestorePrivilege 3164 TiWorker.exe Token: SeSecurityPrivilege 3164 TiWorker.exe Token: SeBackupPrivilege 3164 TiWorker.exe Token: SeRestorePrivilege 3164 TiWorker.exe Token: SeSecurityPrivilege 3164 TiWorker.exe Token: SeBackupPrivilege 3164 TiWorker.exe Token: SeRestorePrivilege 3164 TiWorker.exe Token: SeSecurityPrivilege 3164 TiWorker.exe Token: SeBackupPrivilege 3164 TiWorker.exe Token: SeRestorePrivilege 3164 TiWorker.exe Token: SeSecurityPrivilege 3164 TiWorker.exe Token: SeBackupPrivilege 3164 TiWorker.exe Token: SeRestorePrivilege 3164 TiWorker.exe Token: SeSecurityPrivilege 3164 TiWorker.exe Token: SeBackupPrivilege 3164 TiWorker.exe Token: SeRestorePrivilege 3164 TiWorker.exe -
Suspicious use of WriteProcessMemory 2 IoCs
Processes:
WerFault.exedescription pid process target process PID 764 wrote to memory of 660 764 WerFault.exe 4eadab98bb726919ff7748c567a9635981a538e92b83d273b7c5ac02c0b7e40e.exe PID 764 wrote to memory of 660 764 WerFault.exe 4eadab98bb726919ff7748c567a9635981a538e92b83d273b7c5ac02c0b7e40e.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\4eadab98bb726919ff7748c567a9635981a538e92b83d273b7c5ac02c0b7e40e.exe"C:\Users\Admin\AppData\Local\Temp\4eadab98bb726919ff7748c567a9635981a538e92b83d273b7c5ac02c0b7e40e.exe"1⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 660 -s 5522⤵
- Program crash
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 660 -ip 6601⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
- Suspicious use of WriteProcessMemory
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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
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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
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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memory/112-131-0x000001BF70380000-0x000001BF70390000-memory.dmpFilesize
64KB
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memory/112-132-0x000001BF70920000-0x000001BF70930000-memory.dmpFilesize
64KB
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memory/112-133-0x000001BF73000000-0x000001BF73004000-memory.dmpFilesize
16KB
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memory/660-130-0x0000000000284000-0x0000000000285000-memory.dmpFilesize
4KB