Analysis
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max time kernel
153s -
max time network
175s -
platform
windows10-2004_x64 -
resource
win10v2004-20220721-en -
resource tags
arch:x64arch:x86image:win10v2004-20220721-enlocale:en-usos:windows10-2004-x64system -
submitted
25-07-2022 00:14
Behavioral task
behavioral1
Sample
1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe
Resource
win7-20220718-en
General
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Target
1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe
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Size
283KB
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MD5
9c40dc626ff68bd1b114b266ad83aaaa
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SHA1
4852aa302d72519f443bff5fa14ae44bec7183a2
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SHA256
1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318
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SHA512
c09773f312edf242b4071a9eb42e634db36587ebf53e5430ab95ff1421a327fe7b7f909be03279d65db58a335c3958960a96e29c342f926b90e0d70cf54f93cd
Malware Config
Extracted
darkcomet
Guest16
127.0.0.1:888
DC_MUTEX-7X1Q8Z3
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InstallPath
MSDCSC\msdcsc.exe
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gencode
6Rm4GrjxWWjW
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install
true
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offline_keylogger
true
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persistence
false
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reg_key
MicroUpdate
Signatures
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Modifies WinLogon for persistence 2 TTPs 1 IoCs
Processes:
1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.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" 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe -
Modifies firewall policy service 2 TTPs 3 IoCs
Processes:
msdcsc.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "0" msdcsc.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile msdcsc.exe Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0" msdcsc.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 -
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 -
Disables RegEdit via registry modification 1 IoCs
Processes:
msdcsc.exedescription ioc process Set value (int) \REGISTRY\USER\S-1-5-21-2372564722-193526734-2636556182-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1" msdcsc.exe -
Disables Task Manager via registry modification
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Executes dropped EXE 1 IoCs
Processes:
msdcsc.exepid process 2328 msdcsc.exe -
Sets file to hidden 1 TTPs 2 IoCs
Modifies file attributes to stop it showing in Explorer etc.
Processes:
attrib.exeattrib.exepid process 4548 attrib.exe 392 attrib.exe -
Processes:
resource yara_rule behavioral2/memory/3788-130-0x0000000000400000-0x00000000004C7000-memory.dmp upx C:\Users\Admin\Documents\MSDCSC\msdcsc.exe upx C:\Users\Admin\Documents\MSDCSC\msdcsc.exe upx behavioral2/memory/2328-139-0x0000000000400000-0x00000000004C7000-memory.dmp upx behavioral2/memory/3788-140-0x0000000000400000-0x00000000004C7000-memory.dmp upx behavioral2/memory/2328-141-0x0000000000400000-0x00000000004C7000-memory.dmp upx -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2372564722-193526734-2636556182-1000\Control Panel\International\Geo\Nation 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.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:
1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2372564722-193526734-2636556182-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe" 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.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:
1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\ 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
msdcsc.exepid process 2328 msdcsc.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
Processes:
1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exemsdcsc.exedescription pid process Token: SeIncreaseQuotaPrivilege 3788 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe Token: SeSecurityPrivilege 3788 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe Token: SeTakeOwnershipPrivilege 3788 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe Token: SeLoadDriverPrivilege 3788 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe Token: SeSystemProfilePrivilege 3788 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe Token: SeSystemtimePrivilege 3788 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe Token: SeProfSingleProcessPrivilege 3788 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe Token: SeIncBasePriorityPrivilege 3788 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe Token: SeCreatePagefilePrivilege 3788 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe Token: SeBackupPrivilege 3788 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe Token: SeRestorePrivilege 3788 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe Token: SeShutdownPrivilege 3788 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe Token: SeDebugPrivilege 3788 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe Token: SeSystemEnvironmentPrivilege 3788 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe Token: SeChangeNotifyPrivilege 3788 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe Token: SeRemoteShutdownPrivilege 3788 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe Token: SeUndockPrivilege 3788 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe Token: SeManageVolumePrivilege 3788 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe Token: SeImpersonatePrivilege 3788 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe Token: SeCreateGlobalPrivilege 3788 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe Token: 33 3788 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe Token: 34 3788 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe Token: 35 3788 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe Token: 36 3788 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe Token: SeIncreaseQuotaPrivilege 2328 msdcsc.exe Token: SeSecurityPrivilege 2328 msdcsc.exe Token: SeTakeOwnershipPrivilege 2328 msdcsc.exe Token: SeLoadDriverPrivilege 2328 msdcsc.exe Token: SeSystemProfilePrivilege 2328 msdcsc.exe Token: SeSystemtimePrivilege 2328 msdcsc.exe Token: SeProfSingleProcessPrivilege 2328 msdcsc.exe Token: SeIncBasePriorityPrivilege 2328 msdcsc.exe Token: SeCreatePagefilePrivilege 2328 msdcsc.exe Token: SeBackupPrivilege 2328 msdcsc.exe Token: SeRestorePrivilege 2328 msdcsc.exe Token: SeShutdownPrivilege 2328 msdcsc.exe Token: SeDebugPrivilege 2328 msdcsc.exe Token: SeSystemEnvironmentPrivilege 2328 msdcsc.exe Token: SeChangeNotifyPrivilege 2328 msdcsc.exe Token: SeRemoteShutdownPrivilege 2328 msdcsc.exe Token: SeUndockPrivilege 2328 msdcsc.exe Token: SeManageVolumePrivilege 2328 msdcsc.exe Token: SeImpersonatePrivilege 2328 msdcsc.exe Token: SeCreateGlobalPrivilege 2328 msdcsc.exe Token: 33 2328 msdcsc.exe Token: 34 2328 msdcsc.exe Token: 35 2328 msdcsc.exe Token: 36 2328 msdcsc.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
msdcsc.exepid process 2328 msdcsc.exe -
Suspicious use of WriteProcessMemory 37 IoCs
Processes:
1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.execmd.execmd.exemsdcsc.exedescription pid process target process PID 3788 wrote to memory of 568 3788 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe cmd.exe PID 3788 wrote to memory of 568 3788 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe cmd.exe PID 3788 wrote to memory of 568 3788 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe cmd.exe PID 3788 wrote to memory of 3124 3788 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe cmd.exe PID 3788 wrote to memory of 3124 3788 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe cmd.exe PID 3788 wrote to memory of 3124 3788 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe cmd.exe PID 568 wrote to memory of 392 568 cmd.exe attrib.exe PID 568 wrote to memory of 392 568 cmd.exe attrib.exe PID 568 wrote to memory of 392 568 cmd.exe attrib.exe PID 3124 wrote to memory of 4548 3124 cmd.exe attrib.exe PID 3124 wrote to memory of 4548 3124 cmd.exe attrib.exe PID 3124 wrote to memory of 4548 3124 cmd.exe attrib.exe PID 3788 wrote to memory of 2328 3788 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe msdcsc.exe PID 3788 wrote to memory of 2328 3788 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe msdcsc.exe PID 3788 wrote to memory of 2328 3788 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe msdcsc.exe PID 2328 wrote to memory of 636 2328 msdcsc.exe notepad.exe PID 2328 wrote to memory of 636 2328 msdcsc.exe notepad.exe PID 2328 wrote to memory of 636 2328 msdcsc.exe notepad.exe PID 2328 wrote to memory of 636 2328 msdcsc.exe notepad.exe PID 2328 wrote to memory of 636 2328 msdcsc.exe notepad.exe PID 2328 wrote to memory of 636 2328 msdcsc.exe notepad.exe PID 2328 wrote to memory of 636 2328 msdcsc.exe notepad.exe PID 2328 wrote to memory of 636 2328 msdcsc.exe notepad.exe PID 2328 wrote to memory of 636 2328 msdcsc.exe notepad.exe PID 2328 wrote to memory of 636 2328 msdcsc.exe notepad.exe PID 2328 wrote to memory of 636 2328 msdcsc.exe notepad.exe PID 2328 wrote to memory of 636 2328 msdcsc.exe notepad.exe PID 2328 wrote to memory of 636 2328 msdcsc.exe notepad.exe PID 2328 wrote to memory of 636 2328 msdcsc.exe notepad.exe PID 2328 wrote to memory of 636 2328 msdcsc.exe notepad.exe PID 2328 wrote to memory of 636 2328 msdcsc.exe notepad.exe PID 2328 wrote to memory of 636 2328 msdcsc.exe notepad.exe PID 2328 wrote to memory of 636 2328 msdcsc.exe notepad.exe PID 2328 wrote to memory of 636 2328 msdcsc.exe notepad.exe PID 2328 wrote to memory of 636 2328 msdcsc.exe notepad.exe PID 2328 wrote to memory of 636 2328 msdcsc.exe notepad.exe PID 2328 wrote to memory of 636 2328 msdcsc.exe notepad.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 -
Views/modifies file attributes 1 TTPs 2 IoCs
Processes:
attrib.exeattrib.exepid process 392 attrib.exe 4548 attrib.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe"C:\Users\Admin\AppData\Local\Temp\1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.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
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe" +s +h2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\attrib.exeattrib "C:\Users\Admin\AppData\Local\Temp\1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe" +s +h3⤵
- Sets file to hidden
- Views/modifies file attributes
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\attrib.exeattrib "C:\Users\Admin\AppData\Local\Temp" +s +h3⤵
- Sets file to hidden
- Views/modifies file attributes
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C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"2⤵
- Modifies firewall policy service
- Modifies security service
- Windows security bypass
- Disables RegEdit via registry modification
- Executes dropped EXE
- Windows security modification
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- System policy modification
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C:\Windows\SysWOW64\notepad.exenotepad3⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\Documents\MSDCSC\msdcsc.exeFilesize
283KB
MD59c40dc626ff68bd1b114b266ad83aaaa
SHA14852aa302d72519f443bff5fa14ae44bec7183a2
SHA2561185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318
SHA512c09773f312edf242b4071a9eb42e634db36587ebf53e5430ab95ff1421a327fe7b7f909be03279d65db58a335c3958960a96e29c342f926b90e0d70cf54f93cd
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C:\Users\Admin\Documents\MSDCSC\msdcsc.exeFilesize
283KB
MD59c40dc626ff68bd1b114b266ad83aaaa
SHA14852aa302d72519f443bff5fa14ae44bec7183a2
SHA2561185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318
SHA512c09773f312edf242b4071a9eb42e634db36587ebf53e5430ab95ff1421a327fe7b7f909be03279d65db58a335c3958960a96e29c342f926b90e0d70cf54f93cd
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memory/392-133-0x0000000000000000-mapping.dmp
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memory/568-131-0x0000000000000000-mapping.dmp
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memory/636-138-0x0000000000000000-mapping.dmp
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memory/2328-135-0x0000000000000000-mapping.dmp
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memory/2328-139-0x0000000000400000-0x00000000004C7000-memory.dmpFilesize
796KB
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memory/2328-141-0x0000000000400000-0x00000000004C7000-memory.dmpFilesize
796KB
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memory/3124-132-0x0000000000000000-mapping.dmp
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memory/3788-130-0x0000000000400000-0x00000000004C7000-memory.dmpFilesize
796KB
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memory/3788-140-0x0000000000400000-0x00000000004C7000-memory.dmpFilesize
796KB
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memory/4548-134-0x0000000000000000-mapping.dmp