Analysis
- max time kernel
150s - max time network
148s - platform
windows10_x64 - resource
win10v20201028 - submitted
12/11/2020, 14:29
Static task
static1
Behavioral task
behavioral1
Sample
da0a4e16ef4baf46f27e666e9b4547cdf17eafad3caa235df6c29a52d3da8d0a.exe
Resource
win7v20201028
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
da0a4e16ef4baf46f27e666e9b4547cdf17eafad3caa235df6c29a52d3da8d0a.exe
Resource
win10v20201028
windows10_x64
0 signatures
0 seconds
General
- Target da0a4e16ef4baf46f27e666e9b4547cdf17eafad3caa235df6c29a52d3da8d0a.exe
- Size 349KB
- Sample201112-v9a45tfk9n
- SHA256 da0a4e16ef4baf46f27e666e9b4547cdf17eafad3caa235df6c29a52d3da8d0a
- MD5 0ca4a66815d475d75e3fd325e76aa84b
- SHA1 5099648cc97e3354de1571a932cad705134c38aa
- SHA512 e51afb53aa5a95f4080fcbe3bbe940ca741dc4a370ab8c0edf7a8c8c7c1fda6a2c5bbd210d35663018855382265a5fb1b0abec75e1ebc1ab9677a6c2be09d233
- MD5 SHA1 SHA512
Score
10/10
Malware Config
Signatures
- 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:\\Users\\Admin\\AppData\\Local\\Temp\\windows\\msdcsc.exe" da0a4e16ef4baf46f27e666e9b4547cdf17eafad3caa235df6c29a52d3da8d0a.exe - Executes dropped EXE 1 IoCs
pid Process 3716 msdcsc.exe -
resource yara_rule behavioral2/files/0x000200000001ab73-5.dat upx behavioral2/files/0x000200000001ab73-4.dat upx - 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-1-5-21-3341490333-719741536-2920803124-1000\Control Panel\International\Geo\Nation da0a4e16ef4baf46f27e666e9b4547cdf17eafad3caa235df6c29a52d3da8d0a.exe - Deletes itself 1 IoCs
pid Process 4948 notepad.exe - Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\windows\\msdcsc.exe" da0a4e16ef4baf46f27e666e9b4547cdf17eafad3caa235df6c29a52d3da8d0a.exe Set value (str) \REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\windows\\msdcsc.exe" msdcsc.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance da0a4e16ef4baf46f27e666e9b4547cdf17eafad3caa235df6c29a52d3da8d0a.exe - Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeIncreaseQuotaPrivilege 4756 da0a4e16ef4baf46f27e666e9b4547cdf17eafad3caa235df6c29a52d3da8d0a.exe Token: SeSecurityPrivilege 4756 da0a4e16ef4baf46f27e666e9b4547cdf17eafad3caa235df6c29a52d3da8d0a.exe Token: SeTakeOwnershipPrivilege 4756 da0a4e16ef4baf46f27e666e9b4547cdf17eafad3caa235df6c29a52d3da8d0a.exe Token: SeLoadDriverPrivilege 4756 da0a4e16ef4baf46f27e666e9b4547cdf17eafad3caa235df6c29a52d3da8d0a.exe Token: SeSystemProfilePrivilege 4756 da0a4e16ef4baf46f27e666e9b4547cdf17eafad3caa235df6c29a52d3da8d0a.exe Token: SeSystemtimePrivilege 4756 da0a4e16ef4baf46f27e666e9b4547cdf17eafad3caa235df6c29a52d3da8d0a.exe Token: SeProfSingleProcessPrivilege 4756 da0a4e16ef4baf46f27e666e9b4547cdf17eafad3caa235df6c29a52d3da8d0a.exe Token: SeIncBasePriorityPrivilege 4756 da0a4e16ef4baf46f27e666e9b4547cdf17eafad3caa235df6c29a52d3da8d0a.exe Token: SeCreatePagefilePrivilege 4756 da0a4e16ef4baf46f27e666e9b4547cdf17eafad3caa235df6c29a52d3da8d0a.exe Token: SeBackupPrivilege 4756 da0a4e16ef4baf46f27e666e9b4547cdf17eafad3caa235df6c29a52d3da8d0a.exe Token: SeRestorePrivilege 4756 da0a4e16ef4baf46f27e666e9b4547cdf17eafad3caa235df6c29a52d3da8d0a.exe Token: SeShutdownPrivilege 4756 da0a4e16ef4baf46f27e666e9b4547cdf17eafad3caa235df6c29a52d3da8d0a.exe Token: SeDebugPrivilege 4756 da0a4e16ef4baf46f27e666e9b4547cdf17eafad3caa235df6c29a52d3da8d0a.exe Token: SeSystemEnvironmentPrivilege 4756 da0a4e16ef4baf46f27e666e9b4547cdf17eafad3caa235df6c29a52d3da8d0a.exe Token: SeChangeNotifyPrivilege 4756 da0a4e16ef4baf46f27e666e9b4547cdf17eafad3caa235df6c29a52d3da8d0a.exe Token: SeRemoteShutdownPrivilege 4756 da0a4e16ef4baf46f27e666e9b4547cdf17eafad3caa235df6c29a52d3da8d0a.exe Token: SeUndockPrivilege 4756 da0a4e16ef4baf46f27e666e9b4547cdf17eafad3caa235df6c29a52d3da8d0a.exe Token: SeManageVolumePrivilege 4756 da0a4e16ef4baf46f27e666e9b4547cdf17eafad3caa235df6c29a52d3da8d0a.exe Token: SeImpersonatePrivilege 4756 da0a4e16ef4baf46f27e666e9b4547cdf17eafad3caa235df6c29a52d3da8d0a.exe Token: SeCreateGlobalPrivilege 4756 da0a4e16ef4baf46f27e666e9b4547cdf17eafad3caa235df6c29a52d3da8d0a.exe Token: 33 4756 da0a4e16ef4baf46f27e666e9b4547cdf17eafad3caa235df6c29a52d3da8d0a.exe Token: 34 4756 da0a4e16ef4baf46f27e666e9b4547cdf17eafad3caa235df6c29a52d3da8d0a.exe Token: 35 4756 da0a4e16ef4baf46f27e666e9b4547cdf17eafad3caa235df6c29a52d3da8d0a.exe Token: 36 4756 da0a4e16ef4baf46f27e666e9b4547cdf17eafad3caa235df6c29a52d3da8d0a.exe Token: SeIncreaseQuotaPrivilege 3716 msdcsc.exe Token: SeSecurityPrivilege 3716 msdcsc.exe Token: SeTakeOwnershipPrivilege 3716 msdcsc.exe Token: SeLoadDriverPrivilege 3716 msdcsc.exe Token: SeSystemProfilePrivilege 3716 msdcsc.exe Token: SeSystemtimePrivilege 3716 msdcsc.exe Token: SeProfSingleProcessPrivilege 3716 msdcsc.exe Token: SeIncBasePriorityPrivilege 3716 msdcsc.exe Token: SeCreatePagefilePrivilege 3716 msdcsc.exe Token: SeBackupPrivilege 3716 msdcsc.exe Token: SeRestorePrivilege 3716 msdcsc.exe Token: SeShutdownPrivilege 3716 msdcsc.exe Token: SeDebugPrivilege 3716 msdcsc.exe Token: SeSystemEnvironmentPrivilege 3716 msdcsc.exe Token: SeChangeNotifyPrivilege 3716 msdcsc.exe Token: SeRemoteShutdownPrivilege 3716 msdcsc.exe Token: SeUndockPrivilege 3716 msdcsc.exe Token: SeManageVolumePrivilege 3716 msdcsc.exe Token: SeImpersonatePrivilege 3716 msdcsc.exe Token: SeCreateGlobalPrivilege 3716 msdcsc.exe Token: 33 3716 msdcsc.exe Token: 34 3716 msdcsc.exe Token: 35 3716 msdcsc.exe Token: 36 3716 msdcsc.exe - Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 3716 msdcsc.exe - Suspicious use of WriteProcessMemory 20 IoCs
description pid Process procid_target PID 4756 wrote to memory of 4948 4756 da0a4e16ef4baf46f27e666e9b4547cdf17eafad3caa235df6c29a52d3da8d0a.exe 71 PID 4756 wrote to memory of 4948 4756 da0a4e16ef4baf46f27e666e9b4547cdf17eafad3caa235df6c29a52d3da8d0a.exe 71 PID 4756 wrote to memory of 4948 4756 da0a4e16ef4baf46f27e666e9b4547cdf17eafad3caa235df6c29a52d3da8d0a.exe 71 PID 4756 wrote to memory of 4948 4756 da0a4e16ef4baf46f27e666e9b4547cdf17eafad3caa235df6c29a52d3da8d0a.exe 71 PID 4756 wrote to memory of 4948 4756 da0a4e16ef4baf46f27e666e9b4547cdf17eafad3caa235df6c29a52d3da8d0a.exe 71 PID 4756 wrote to memory of 4948 4756 da0a4e16ef4baf46f27e666e9b4547cdf17eafad3caa235df6c29a52d3da8d0a.exe 71 PID 4756 wrote to memory of 4948 4756 da0a4e16ef4baf46f27e666e9b4547cdf17eafad3caa235df6c29a52d3da8d0a.exe 71 PID 4756 wrote to memory of 4948 4756 da0a4e16ef4baf46f27e666e9b4547cdf17eafad3caa235df6c29a52d3da8d0a.exe 71 PID 4756 wrote to memory of 4948 4756 da0a4e16ef4baf46f27e666e9b4547cdf17eafad3caa235df6c29a52d3da8d0a.exe 71 PID 4756 wrote to memory of 4948 4756 da0a4e16ef4baf46f27e666e9b4547cdf17eafad3caa235df6c29a52d3da8d0a.exe 71 PID 4756 wrote to memory of 4948 4756 da0a4e16ef4baf46f27e666e9b4547cdf17eafad3caa235df6c29a52d3da8d0a.exe 71 PID 4756 wrote to memory of 4948 4756 da0a4e16ef4baf46f27e666e9b4547cdf17eafad3caa235df6c29a52d3da8d0a.exe 71 PID 4756 wrote to memory of 4948 4756 da0a4e16ef4baf46f27e666e9b4547cdf17eafad3caa235df6c29a52d3da8d0a.exe 71 PID 4756 wrote to memory of 4948 4756 da0a4e16ef4baf46f27e666e9b4547cdf17eafad3caa235df6c29a52d3da8d0a.exe 71 PID 4756 wrote to memory of 4948 4756 da0a4e16ef4baf46f27e666e9b4547cdf17eafad3caa235df6c29a52d3da8d0a.exe 71 PID 4756 wrote to memory of 4948 4756 da0a4e16ef4baf46f27e666e9b4547cdf17eafad3caa235df6c29a52d3da8d0a.exe 71 PID 4756 wrote to memory of 4948 4756 da0a4e16ef4baf46f27e666e9b4547cdf17eafad3caa235df6c29a52d3da8d0a.exe 71 PID 4756 wrote to memory of 3716 4756 da0a4e16ef4baf46f27e666e9b4547cdf17eafad3caa235df6c29a52d3da8d0a.exe 75 PID 4756 wrote to memory of 3716 4756 da0a4e16ef4baf46f27e666e9b4547cdf17eafad3caa235df6c29a52d3da8d0a.exe 75 PID 4756 wrote to memory of 3716 4756 da0a4e16ef4baf46f27e666e9b4547cdf17eafad3caa235df6c29a52d3da8d0a.exe 75
Processes
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C:\Users\Admin\AppData\Local\Temp\da0a4e16ef4baf46f27e666e9b4547cdf17eafad3caa235df6c29a52d3da8d0a.exe"C:\Users\Admin\AppData\Local\Temp\da0a4e16ef4baf46f27e666e9b4547cdf17eafad3caa235df6c29a52d3da8d0a.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:4756 -
C:\Windows\SysWOW64\notepad.exenotepad2⤵
- Deletes itself
PID:4948
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C:\Users\Admin\AppData\Local\Temp\windows\msdcsc.exe"C:\Users\Admin\AppData\Local\Temp\windows\msdcsc.exe"2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:3716
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