Analysis
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max time kernel
149s -
max time network
123s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
06-11-2020 10:45
Static task
static1
Behavioral task
behavioral1
Sample
63a99ccfdc930abf9e0f91812ab262061124dda7182e1aecfda2aeaab35e467c.exe
Resource
win7v20201028
General
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Target
63a99ccfdc930abf9e0f91812ab262061124dda7182e1aecfda2aeaab35e467c.exe
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Size
251KB
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MD5
871e48f28ac21f11460f540b2bca3ce3
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SHA1
c536afca338c94f29efb91a4cf93bb1c3907b86c
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SHA256
63a99ccfdc930abf9e0f91812ab262061124dda7182e1aecfda2aeaab35e467c
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SHA512
99c965f09325ec7532f0581452dfa5934b1054ad3d1b844e4c55d7db851d7c32552bd34d6dec308d8b712213f11f33c4929ed7170326071b00d698069e18d142
Malware Config
Signatures
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Modifies WinLogon for persistence 2 TTPs 1 IoCs
Processes:
63a99ccfdc930abf9e0f91812ab262061124dda7182e1aecfda2aeaab35e467c.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe" 63a99ccfdc930abf9e0f91812ab262061124dda7182e1aecfda2aeaab35e467c.exe -
Modifies security service 2 TTPs 1 IoCs
Processes:
msdcsc.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wscsvc\Start = "4" msdcsc.exe -
Executes dropped EXE 1 IoCs
Processes:
msdcsc.exepid process 3544 msdcsc.exe -
Processes:
resource yara_rule C:\Users\Admin\Documents\MSDCSC\msdcsc.exe upx C:\Users\Admin\Documents\MSDCSC\msdcsc.exe upx -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
63a99ccfdc930abf9e0f91812ab262061124dda7182e1aecfda2aeaab35e467c.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Control Panel\International\Geo\Nation 63a99ccfdc930abf9e0f91812ab262061124dda7182e1aecfda2aeaab35e467c.exe -
Processes:
msdcsc.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" msdcsc.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1" msdcsc.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
63a99ccfdc930abf9e0f91812ab262061124dda7182e1aecfda2aeaab35e467c.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe" 63a99ccfdc930abf9e0f91812ab262061124dda7182e1aecfda2aeaab35e467c.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Modifies registry class 1 IoCs
Processes:
63a99ccfdc930abf9e0f91812ab262061124dda7182e1aecfda2aeaab35e467c.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance 63a99ccfdc930abf9e0f91812ab262061124dda7182e1aecfda2aeaab35e467c.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
Processes:
63a99ccfdc930abf9e0f91812ab262061124dda7182e1aecfda2aeaab35e467c.exemsdcsc.exedescription pid process Token: SeIncreaseQuotaPrivilege 4676 63a99ccfdc930abf9e0f91812ab262061124dda7182e1aecfda2aeaab35e467c.exe Token: SeSecurityPrivilege 4676 63a99ccfdc930abf9e0f91812ab262061124dda7182e1aecfda2aeaab35e467c.exe Token: SeTakeOwnershipPrivilege 4676 63a99ccfdc930abf9e0f91812ab262061124dda7182e1aecfda2aeaab35e467c.exe Token: SeLoadDriverPrivilege 4676 63a99ccfdc930abf9e0f91812ab262061124dda7182e1aecfda2aeaab35e467c.exe Token: SeSystemProfilePrivilege 4676 63a99ccfdc930abf9e0f91812ab262061124dda7182e1aecfda2aeaab35e467c.exe Token: SeSystemtimePrivilege 4676 63a99ccfdc930abf9e0f91812ab262061124dda7182e1aecfda2aeaab35e467c.exe Token: SeProfSingleProcessPrivilege 4676 63a99ccfdc930abf9e0f91812ab262061124dda7182e1aecfda2aeaab35e467c.exe Token: SeIncBasePriorityPrivilege 4676 63a99ccfdc930abf9e0f91812ab262061124dda7182e1aecfda2aeaab35e467c.exe Token: SeCreatePagefilePrivilege 4676 63a99ccfdc930abf9e0f91812ab262061124dda7182e1aecfda2aeaab35e467c.exe Token: SeBackupPrivilege 4676 63a99ccfdc930abf9e0f91812ab262061124dda7182e1aecfda2aeaab35e467c.exe Token: SeRestorePrivilege 4676 63a99ccfdc930abf9e0f91812ab262061124dda7182e1aecfda2aeaab35e467c.exe Token: SeShutdownPrivilege 4676 63a99ccfdc930abf9e0f91812ab262061124dda7182e1aecfda2aeaab35e467c.exe Token: SeDebugPrivilege 4676 63a99ccfdc930abf9e0f91812ab262061124dda7182e1aecfda2aeaab35e467c.exe Token: SeSystemEnvironmentPrivilege 4676 63a99ccfdc930abf9e0f91812ab262061124dda7182e1aecfda2aeaab35e467c.exe Token: SeChangeNotifyPrivilege 4676 63a99ccfdc930abf9e0f91812ab262061124dda7182e1aecfda2aeaab35e467c.exe Token: SeRemoteShutdownPrivilege 4676 63a99ccfdc930abf9e0f91812ab262061124dda7182e1aecfda2aeaab35e467c.exe Token: SeUndockPrivilege 4676 63a99ccfdc930abf9e0f91812ab262061124dda7182e1aecfda2aeaab35e467c.exe Token: SeManageVolumePrivilege 4676 63a99ccfdc930abf9e0f91812ab262061124dda7182e1aecfda2aeaab35e467c.exe Token: SeImpersonatePrivilege 4676 63a99ccfdc930abf9e0f91812ab262061124dda7182e1aecfda2aeaab35e467c.exe Token: SeCreateGlobalPrivilege 4676 63a99ccfdc930abf9e0f91812ab262061124dda7182e1aecfda2aeaab35e467c.exe Token: 33 4676 63a99ccfdc930abf9e0f91812ab262061124dda7182e1aecfda2aeaab35e467c.exe Token: 34 4676 63a99ccfdc930abf9e0f91812ab262061124dda7182e1aecfda2aeaab35e467c.exe Token: 35 4676 63a99ccfdc930abf9e0f91812ab262061124dda7182e1aecfda2aeaab35e467c.exe Token: 36 4676 63a99ccfdc930abf9e0f91812ab262061124dda7182e1aecfda2aeaab35e467c.exe Token: SeIncreaseQuotaPrivilege 3544 msdcsc.exe Token: SeSecurityPrivilege 3544 msdcsc.exe Token: SeTakeOwnershipPrivilege 3544 msdcsc.exe Token: SeLoadDriverPrivilege 3544 msdcsc.exe Token: SeSystemProfilePrivilege 3544 msdcsc.exe Token: SeSystemtimePrivilege 3544 msdcsc.exe Token: SeProfSingleProcessPrivilege 3544 msdcsc.exe Token: SeIncBasePriorityPrivilege 3544 msdcsc.exe Token: SeCreatePagefilePrivilege 3544 msdcsc.exe Token: SeBackupPrivilege 3544 msdcsc.exe Token: SeRestorePrivilege 3544 msdcsc.exe Token: SeShutdownPrivilege 3544 msdcsc.exe Token: SeDebugPrivilege 3544 msdcsc.exe Token: SeSystemEnvironmentPrivilege 3544 msdcsc.exe Token: SeChangeNotifyPrivilege 3544 msdcsc.exe Token: SeRemoteShutdownPrivilege 3544 msdcsc.exe Token: SeUndockPrivilege 3544 msdcsc.exe Token: SeManageVolumePrivilege 3544 msdcsc.exe Token: SeImpersonatePrivilege 3544 msdcsc.exe Token: SeCreateGlobalPrivilege 3544 msdcsc.exe Token: 33 3544 msdcsc.exe Token: 34 3544 msdcsc.exe Token: 35 3544 msdcsc.exe Token: 36 3544 msdcsc.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
msdcsc.exepid process 3544 msdcsc.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
63a99ccfdc930abf9e0f91812ab262061124dda7182e1aecfda2aeaab35e467c.exemsdcsc.exedescription pid process target process PID 4676 wrote to memory of 3544 4676 63a99ccfdc930abf9e0f91812ab262061124dda7182e1aecfda2aeaab35e467c.exe msdcsc.exe PID 4676 wrote to memory of 3544 4676 63a99ccfdc930abf9e0f91812ab262061124dda7182e1aecfda2aeaab35e467c.exe msdcsc.exe PID 4676 wrote to memory of 3544 4676 63a99ccfdc930abf9e0f91812ab262061124dda7182e1aecfda2aeaab35e467c.exe msdcsc.exe PID 3544 wrote to memory of 3664 3544 msdcsc.exe iexplore.exe PID 3544 wrote to memory of 3664 3544 msdcsc.exe iexplore.exe PID 3544 wrote to memory of 3664 3544 msdcsc.exe iexplore.exe PID 3544 wrote to memory of 3636 3544 msdcsc.exe explorer.exe PID 3544 wrote to memory of 3636 3544 msdcsc.exe explorer.exe -
System policy modification 1 TTPs 3 IoCs
Processes:
msdcsc.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion msdcsc.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern msdcsc.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern\NoControlPanel = "1" msdcsc.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\63a99ccfdc930abf9e0f91812ab262061124dda7182e1aecfda2aeaab35e467c.exe"C:\Users\Admin\AppData\Local\Temp\63a99ccfdc930abf9e0f91812ab262061124dda7182e1aecfda2aeaab35e467c.exe"1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4676 -
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"2⤵
- Modifies security service
- Executes dropped EXE
- Windows security modification
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- System policy modification
PID:3544 -
C:\Program Files (x86)\Internet Explorer\iexplore.exe"C:\Program Files (x86)\Internet Explorer\iexplore.exe"3⤵PID:3664
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C:\Windows\explorer.exe"C:\Windows\explorer.exe"3⤵PID:3636
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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C:\Users\Admin\Documents\MSDCSC\msdcsc.exeMD5
871e48f28ac21f11460f540b2bca3ce3
SHA1c536afca338c94f29efb91a4cf93bb1c3907b86c
SHA25663a99ccfdc930abf9e0f91812ab262061124dda7182e1aecfda2aeaab35e467c
SHA51299c965f09325ec7532f0581452dfa5934b1054ad3d1b844e4c55d7db851d7c32552bd34d6dec308d8b712213f11f33c4929ed7170326071b00d698069e18d142
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C:\Users\Admin\Documents\MSDCSC\msdcsc.exeMD5
871e48f28ac21f11460f540b2bca3ce3
SHA1c536afca338c94f29efb91a4cf93bb1c3907b86c
SHA25663a99ccfdc930abf9e0f91812ab262061124dda7182e1aecfda2aeaab35e467c
SHA51299c965f09325ec7532f0581452dfa5934b1054ad3d1b844e4c55d7db851d7c32552bd34d6dec308d8b712213f11f33c4929ed7170326071b00d698069e18d142
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memory/3544-0-0x0000000000000000-mapping.dmp