Analysis
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max time kernel
205s -
max time network
106s -
platform
windows7_x64 -
resource
win7-20221111-en -
resource tags
arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system -
submitted
05/12/2022, 19:05
Static task
static1
Behavioral task
behavioral1
Sample
bf1180e70a481ef1f3f6d1e328a67cd6b3752d765aa9ca571334189b3fd94516.exe
Resource
win7-20221111-en
General
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Target
bf1180e70a481ef1f3f6d1e328a67cd6b3752d765aa9ca571334189b3fd94516.exe
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Size
3.1MB
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MD5
c3bfad0a2eb4f5bf78240aed5c372f8a
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SHA1
1cb2506bbf04b07c454b6064761bb4fc58571538
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SHA256
bf1180e70a481ef1f3f6d1e328a67cd6b3752d765aa9ca571334189b3fd94516
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SHA512
381787058b22d010a7de8b27404c18d193988fac532727b4a75ebff0738bfa62c69d4b2b74a647014efc2a00afa7d7afb88a7577c5be649331e402bfad0b689d
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SSDEEP
98304:9cEHGzo0TwhHZVYuHhp7RLv+ZVfMGMKPvJJ:9PmoPhHZVYS3WZVfXT
Malware Config
Signatures
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Modifies WinLogon for persistence 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windows\\system32\\Windupdt\\winupdate.exe" bf1180e70a481ef1f3f6d1e328a67cd6b3752d765aa9ca571334189b3fd94516.exe -
Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate bf1180e70a481ef1f3f6d1e328a67cd6b3752d765aa9ca571334189b3fd94516.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate explorer.exe -
Identifies Wine through registry keys 2 TTPs 2 IoCs
Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Wine explorer.exe Key opened \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Wine bf1180e70a481ef1f3f6d1e328a67cd6b3752d765aa9ca571334189b3fd94516.exe -
Adds Run key to start application 2 TTPs 3 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run bf1180e70a481ef1f3f6d1e328a67cd6b3752d765aa9ca571334189b3fd94516.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windows\\system32\\Windupdt\\winupdate.exe" bf1180e70a481ef1f3f6d1e328a67cd6b3752d765aa9ca571334189b3fd94516.exe Key created \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run explorer.exe -
description ioc Process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA bf1180e70a481ef1f3f6d1e328a67cd6b3752d765aa9ca571334189b3fd94516.exe -
Writes to the Master Boot Record (MBR) 1 TTPs 2 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
description ioc Process File opened for modification \??\PhysicalDrive0 bf1180e70a481ef1f3f6d1e328a67cd6b3752d765aa9ca571334189b3fd94516.exe File opened for modification \??\PhysicalDrive0 explorer.exe -
Drops file in System32 directory 3 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\Windupdt\ bf1180e70a481ef1f3f6d1e328a67cd6b3752d765aa9ca571334189b3fd94516.exe File created C:\Windows\SysWOW64\Windupdt\winupdate.exe bf1180e70a481ef1f3f6d1e328a67cd6b3752d765aa9ca571334189b3fd94516.exe File opened for modification C:\Windows\SysWOW64\Windupdt\winupdate.exe bf1180e70a481ef1f3f6d1e328a67cd6b3752d765aa9ca571334189b3fd94516.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
pid Process 2024 bf1180e70a481ef1f3f6d1e328a67cd6b3752d765aa9ca571334189b3fd94516.exe 1416 explorer.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 2024 set thread context of 1416 2024 bf1180e70a481ef1f3f6d1e328a67cd6b3752d765aa9ca571334189b3fd94516.exe 28 -
Checks processor information in registry 2 TTPs 8 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString explorer.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier explorer.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier explorer.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 bf1180e70a481ef1f3f6d1e328a67cd6b3752d765aa9ca571334189b3fd94516.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString bf1180e70a481ef1f3f6d1e328a67cd6b3752d765aa9ca571334189b3fd94516.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier bf1180e70a481ef1f3f6d1e328a67cd6b3752d765aa9ca571334189b3fd94516.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier bf1180e70a481ef1f3f6d1e328a67cd6b3752d765aa9ca571334189b3fd94516.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 explorer.exe -
Enumerates system info in registry 2 TTPs 2 IoCs
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier bf1180e70a481ef1f3f6d1e328a67cd6b3752d765aa9ca571334189b3fd94516.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier explorer.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 2024 bf1180e70a481ef1f3f6d1e328a67cd6b3752d765aa9ca571334189b3fd94516.exe 1416 explorer.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 1416 explorer.exe -
Suspicious use of AdjustPrivilegeToken 46 IoCs
description pid Process Token: SeIncreaseQuotaPrivilege 2024 bf1180e70a481ef1f3f6d1e328a67cd6b3752d765aa9ca571334189b3fd94516.exe Token: SeSecurityPrivilege 2024 bf1180e70a481ef1f3f6d1e328a67cd6b3752d765aa9ca571334189b3fd94516.exe Token: SeTakeOwnershipPrivilege 2024 bf1180e70a481ef1f3f6d1e328a67cd6b3752d765aa9ca571334189b3fd94516.exe Token: SeLoadDriverPrivilege 2024 bf1180e70a481ef1f3f6d1e328a67cd6b3752d765aa9ca571334189b3fd94516.exe Token: SeSystemProfilePrivilege 2024 bf1180e70a481ef1f3f6d1e328a67cd6b3752d765aa9ca571334189b3fd94516.exe Token: SeSystemtimePrivilege 2024 bf1180e70a481ef1f3f6d1e328a67cd6b3752d765aa9ca571334189b3fd94516.exe Token: SeProfSingleProcessPrivilege 2024 bf1180e70a481ef1f3f6d1e328a67cd6b3752d765aa9ca571334189b3fd94516.exe Token: SeIncBasePriorityPrivilege 2024 bf1180e70a481ef1f3f6d1e328a67cd6b3752d765aa9ca571334189b3fd94516.exe Token: SeCreatePagefilePrivilege 2024 bf1180e70a481ef1f3f6d1e328a67cd6b3752d765aa9ca571334189b3fd94516.exe Token: SeBackupPrivilege 2024 bf1180e70a481ef1f3f6d1e328a67cd6b3752d765aa9ca571334189b3fd94516.exe Token: SeRestorePrivilege 2024 bf1180e70a481ef1f3f6d1e328a67cd6b3752d765aa9ca571334189b3fd94516.exe Token: SeShutdownPrivilege 2024 bf1180e70a481ef1f3f6d1e328a67cd6b3752d765aa9ca571334189b3fd94516.exe Token: SeDebugPrivilege 2024 bf1180e70a481ef1f3f6d1e328a67cd6b3752d765aa9ca571334189b3fd94516.exe Token: SeSystemEnvironmentPrivilege 2024 bf1180e70a481ef1f3f6d1e328a67cd6b3752d765aa9ca571334189b3fd94516.exe Token: SeChangeNotifyPrivilege 2024 bf1180e70a481ef1f3f6d1e328a67cd6b3752d765aa9ca571334189b3fd94516.exe Token: SeRemoteShutdownPrivilege 2024 bf1180e70a481ef1f3f6d1e328a67cd6b3752d765aa9ca571334189b3fd94516.exe Token: SeUndockPrivilege 2024 bf1180e70a481ef1f3f6d1e328a67cd6b3752d765aa9ca571334189b3fd94516.exe Token: SeManageVolumePrivilege 2024 bf1180e70a481ef1f3f6d1e328a67cd6b3752d765aa9ca571334189b3fd94516.exe Token: SeImpersonatePrivilege 2024 bf1180e70a481ef1f3f6d1e328a67cd6b3752d765aa9ca571334189b3fd94516.exe Token: SeCreateGlobalPrivilege 2024 bf1180e70a481ef1f3f6d1e328a67cd6b3752d765aa9ca571334189b3fd94516.exe Token: 33 2024 bf1180e70a481ef1f3f6d1e328a67cd6b3752d765aa9ca571334189b3fd94516.exe Token: 34 2024 bf1180e70a481ef1f3f6d1e328a67cd6b3752d765aa9ca571334189b3fd94516.exe Token: 35 2024 bf1180e70a481ef1f3f6d1e328a67cd6b3752d765aa9ca571334189b3fd94516.exe Token: SeIncreaseQuotaPrivilege 1416 explorer.exe Token: SeSecurityPrivilege 1416 explorer.exe Token: SeTakeOwnershipPrivilege 1416 explorer.exe Token: SeLoadDriverPrivilege 1416 explorer.exe Token: SeSystemProfilePrivilege 1416 explorer.exe Token: SeSystemtimePrivilege 1416 explorer.exe Token: SeProfSingleProcessPrivilege 1416 explorer.exe Token: SeIncBasePriorityPrivilege 1416 explorer.exe Token: SeCreatePagefilePrivilege 1416 explorer.exe Token: SeBackupPrivilege 1416 explorer.exe Token: SeRestorePrivilege 1416 explorer.exe Token: SeShutdownPrivilege 1416 explorer.exe Token: SeDebugPrivilege 1416 explorer.exe Token: SeSystemEnvironmentPrivilege 1416 explorer.exe Token: SeChangeNotifyPrivilege 1416 explorer.exe Token: SeRemoteShutdownPrivilege 1416 explorer.exe Token: SeUndockPrivilege 1416 explorer.exe Token: SeManageVolumePrivilege 1416 explorer.exe Token: SeImpersonatePrivilege 1416 explorer.exe Token: SeCreateGlobalPrivilege 1416 explorer.exe Token: 33 1416 explorer.exe Token: 34 1416 explorer.exe Token: 35 1416 explorer.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 1416 explorer.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 2024 wrote to memory of 1416 2024 bf1180e70a481ef1f3f6d1e328a67cd6b3752d765aa9ca571334189b3fd94516.exe 28 PID 2024 wrote to memory of 1416 2024 bf1180e70a481ef1f3f6d1e328a67cd6b3752d765aa9ca571334189b3fd94516.exe 28 PID 2024 wrote to memory of 1416 2024 bf1180e70a481ef1f3f6d1e328a67cd6b3752d765aa9ca571334189b3fd94516.exe 28 PID 2024 wrote to memory of 1416 2024 bf1180e70a481ef1f3f6d1e328a67cd6b3752d765aa9ca571334189b3fd94516.exe 28 PID 2024 wrote to memory of 1416 2024 bf1180e70a481ef1f3f6d1e328a67cd6b3752d765aa9ca571334189b3fd94516.exe 28 PID 2024 wrote to memory of 1416 2024 bf1180e70a481ef1f3f6d1e328a67cd6b3752d765aa9ca571334189b3fd94516.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\bf1180e70a481ef1f3f6d1e328a67cd6b3752d765aa9ca571334189b3fd94516.exe"C:\Users\Admin\AppData\Local\Temp\bf1180e70a481ef1f3f6d1e328a67cd6b3752d765aa9ca571334189b3fd94516.exe"1⤵
- Modifies WinLogon for persistence
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Adds Run key to start application
- Checks whether UAC is enabled
- Writes to the Master Boot Record (MBR)
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2024 -
C:\Windows\SysWOW64\explorer.exe"C:\Windows\SysWOW64\explorer.exe"2⤵
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Adds Run key to start application
- Writes to the Master Boot Record (MBR)
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:1416
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