Analysis
-
max time kernel
151s -
max time network
154s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
20-06-2022 19:05
Behavioral task
behavioral1
Sample
loader.exe
Resource
win7-20220414-en
General
-
Target
loader.exe
-
Size
659KB
-
MD5
559e77c66347f99fc2ab5e9ef757ce0d
-
SHA1
86bd1056e44cdf6dcd3188e16f55cef80a840949
-
SHA256
8d5f887270c6f0c2b383c57435bbf7d222ce416a09b3d74d4e1d80608543d0ce
-
SHA512
30f67914a11b57dd69d4f2715c03477d934442169db37c5b74e91d0fb8cbf00b3d4fbd94a38b3ed456b9363d551e2b22756087c19cea53eb3da52eb5fd8515e9
Malware Config
Extracted
darkcomet
Sazan
sussysdfffdfff343.duckdns.org:1604
DC_MUTEX-LJTACQW
-
InstallPath
MSDCSC\msdcsc.exe
-
gencode
l51rypEngfWg
-
install
true
-
offline_keylogger
true
-
persistence
true
-
reg_key
MicroUpdate
Signatures
-
Modifies WinLogon for persistence 2 TTPs 1 IoCs
Processes:
loader.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" loader.exe -
Modifies firewall policy service 2 TTPs 6 IoCs
Processes:
iexplore.exemsdcsc.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "0" iexplore.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 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 iexplore.exe Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0" iexplore.exe -
Modifies security service 2 TTPs 2 IoCs
Processes:
msdcsc.exeiexplore.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wscsvc\Start = "4" msdcsc.exe Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wscsvc\Start = "4" iexplore.exe -
Processes:
msdcsc.exeiexplore.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 Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" iexplore.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1" iexplore.exe -
Disables RegEdit via registry modification 2 IoCs
Processes:
msdcsc.exeiexplore.exedescription ioc process Set value (int) \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1" msdcsc.exe Set value (int) \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1" iexplore.exe -
Executes dropped EXE 1 IoCs
Processes:
msdcsc.exepid process 1576 msdcsc.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
loader.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation loader.exe -
Processes:
msdcsc.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1" msdcsc.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" msdcsc.exe -
Adds Run key to start application 2 TTPs 3 IoCs
Processes:
loader.exemsdcsc.exeiexplore.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe" loader.exe Set value (str) \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe" msdcsc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe" iexplore.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
msdcsc.exedescription pid process target process PID 1576 set thread context of 2280 1576 msdcsc.exe iexplore.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
-
Modifies registry class 1 IoCs
Processes:
loader.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\ loader.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
Processes:
loader.exemsdcsc.exeiexplore.exedescription pid process Token: SeIncreaseQuotaPrivilege 1860 loader.exe Token: SeSecurityPrivilege 1860 loader.exe Token: SeTakeOwnershipPrivilege 1860 loader.exe Token: SeLoadDriverPrivilege 1860 loader.exe Token: SeSystemProfilePrivilege 1860 loader.exe Token: SeSystemtimePrivilege 1860 loader.exe Token: SeProfSingleProcessPrivilege 1860 loader.exe Token: SeIncBasePriorityPrivilege 1860 loader.exe Token: SeCreatePagefilePrivilege 1860 loader.exe Token: SeBackupPrivilege 1860 loader.exe Token: SeRestorePrivilege 1860 loader.exe Token: SeShutdownPrivilege 1860 loader.exe Token: SeDebugPrivilege 1860 loader.exe Token: SeSystemEnvironmentPrivilege 1860 loader.exe Token: SeChangeNotifyPrivilege 1860 loader.exe Token: SeRemoteShutdownPrivilege 1860 loader.exe Token: SeUndockPrivilege 1860 loader.exe Token: SeManageVolumePrivilege 1860 loader.exe Token: SeImpersonatePrivilege 1860 loader.exe Token: SeCreateGlobalPrivilege 1860 loader.exe Token: 33 1860 loader.exe Token: 34 1860 loader.exe Token: 35 1860 loader.exe Token: 36 1860 loader.exe Token: SeIncreaseQuotaPrivilege 1576 msdcsc.exe Token: SeSecurityPrivilege 1576 msdcsc.exe Token: SeTakeOwnershipPrivilege 1576 msdcsc.exe Token: SeLoadDriverPrivilege 1576 msdcsc.exe Token: SeSystemProfilePrivilege 1576 msdcsc.exe Token: SeSystemtimePrivilege 1576 msdcsc.exe Token: SeProfSingleProcessPrivilege 1576 msdcsc.exe Token: SeIncBasePriorityPrivilege 1576 msdcsc.exe Token: SeCreatePagefilePrivilege 1576 msdcsc.exe Token: SeBackupPrivilege 1576 msdcsc.exe Token: SeRestorePrivilege 1576 msdcsc.exe Token: SeShutdownPrivilege 1576 msdcsc.exe Token: SeDebugPrivilege 1576 msdcsc.exe Token: SeSystemEnvironmentPrivilege 1576 msdcsc.exe Token: SeChangeNotifyPrivilege 1576 msdcsc.exe Token: SeRemoteShutdownPrivilege 1576 msdcsc.exe Token: SeUndockPrivilege 1576 msdcsc.exe Token: SeManageVolumePrivilege 1576 msdcsc.exe Token: SeImpersonatePrivilege 1576 msdcsc.exe Token: SeCreateGlobalPrivilege 1576 msdcsc.exe Token: 33 1576 msdcsc.exe Token: 34 1576 msdcsc.exe Token: 35 1576 msdcsc.exe Token: 36 1576 msdcsc.exe Token: SeIncreaseQuotaPrivilege 2280 iexplore.exe Token: SeSecurityPrivilege 2280 iexplore.exe Token: SeTakeOwnershipPrivilege 2280 iexplore.exe Token: SeLoadDriverPrivilege 2280 iexplore.exe Token: SeSystemProfilePrivilege 2280 iexplore.exe Token: SeSystemtimePrivilege 2280 iexplore.exe Token: SeProfSingleProcessPrivilege 2280 iexplore.exe Token: SeIncBasePriorityPrivilege 2280 iexplore.exe Token: SeCreatePagefilePrivilege 2280 iexplore.exe Token: SeBackupPrivilege 2280 iexplore.exe Token: SeRestorePrivilege 2280 iexplore.exe Token: SeShutdownPrivilege 2280 iexplore.exe Token: SeDebugPrivilege 2280 iexplore.exe Token: SeSystemEnvironmentPrivilege 2280 iexplore.exe Token: SeChangeNotifyPrivilege 2280 iexplore.exe Token: SeRemoteShutdownPrivilege 2280 iexplore.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
iexplore.exepid process 2280 iexplore.exe -
Suspicious use of WriteProcessMemory 30 IoCs
Processes:
loader.exemsdcsc.exeiexplore.exedescription pid process target process PID 1860 wrote to memory of 1576 1860 loader.exe msdcsc.exe PID 1860 wrote to memory of 1576 1860 loader.exe msdcsc.exe PID 1860 wrote to memory of 1576 1860 loader.exe msdcsc.exe PID 1576 wrote to memory of 2280 1576 msdcsc.exe iexplore.exe PID 1576 wrote to memory of 2280 1576 msdcsc.exe iexplore.exe PID 1576 wrote to memory of 2280 1576 msdcsc.exe iexplore.exe PID 1576 wrote to memory of 2280 1576 msdcsc.exe iexplore.exe PID 1576 wrote to memory of 2280 1576 msdcsc.exe iexplore.exe PID 2280 wrote to memory of 2880 2280 iexplore.exe notepad.exe PID 2280 wrote to memory of 2880 2280 iexplore.exe notepad.exe PID 2280 wrote to memory of 2880 2280 iexplore.exe notepad.exe PID 2280 wrote to memory of 2880 2280 iexplore.exe notepad.exe PID 2280 wrote to memory of 2880 2280 iexplore.exe notepad.exe PID 2280 wrote to memory of 2880 2280 iexplore.exe notepad.exe PID 2280 wrote to memory of 2880 2280 iexplore.exe notepad.exe PID 2280 wrote to memory of 2880 2280 iexplore.exe notepad.exe PID 2280 wrote to memory of 2880 2280 iexplore.exe notepad.exe PID 2280 wrote to memory of 2880 2280 iexplore.exe notepad.exe PID 2280 wrote to memory of 2880 2280 iexplore.exe notepad.exe PID 2280 wrote to memory of 2880 2280 iexplore.exe notepad.exe PID 2280 wrote to memory of 2880 2280 iexplore.exe notepad.exe PID 2280 wrote to memory of 2880 2280 iexplore.exe notepad.exe PID 2280 wrote to memory of 2880 2280 iexplore.exe notepad.exe PID 2280 wrote to memory of 2880 2280 iexplore.exe notepad.exe PID 2280 wrote to memory of 2880 2280 iexplore.exe notepad.exe PID 2280 wrote to memory of 2880 2280 iexplore.exe notepad.exe PID 2280 wrote to memory of 2880 2280 iexplore.exe notepad.exe PID 2280 wrote to memory of 2880 2280 iexplore.exe notepad.exe PID 2280 wrote to memory of 2880 2280 iexplore.exe notepad.exe PID 2280 wrote to memory of 2880 2280 iexplore.exe notepad.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\loader.exe"C:\Users\Admin\AppData\Local\Temp\loader.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
-
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
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Program Files (x86)\Internet Explorer\iexplore.exe"C:\Program Files (x86)\Internet Explorer\iexplore.exe"3⤵
- Modifies firewall policy service
- Modifies security service
- Windows security bypass
- Disables RegEdit via registry modification
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\notepad.exenotepad4⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
-
C:\Users\Admin\Documents\MSDCSC\msdcsc.exeFilesize
659KB
MD5559e77c66347f99fc2ab5e9ef757ce0d
SHA186bd1056e44cdf6dcd3188e16f55cef80a840949
SHA2568d5f887270c6f0c2b383c57435bbf7d222ce416a09b3d74d4e1d80608543d0ce
SHA51230f67914a11b57dd69d4f2715c03477d934442169db37c5b74e91d0fb8cbf00b3d4fbd94a38b3ed456b9363d551e2b22756087c19cea53eb3da52eb5fd8515e9
-
C:\Users\Admin\Documents\MSDCSC\msdcsc.exeFilesize
659KB
MD5559e77c66347f99fc2ab5e9ef757ce0d
SHA186bd1056e44cdf6dcd3188e16f55cef80a840949
SHA2568d5f887270c6f0c2b383c57435bbf7d222ce416a09b3d74d4e1d80608543d0ce
SHA51230f67914a11b57dd69d4f2715c03477d934442169db37c5b74e91d0fb8cbf00b3d4fbd94a38b3ed456b9363d551e2b22756087c19cea53eb3da52eb5fd8515e9
-
memory/1576-130-0x0000000000000000-mapping.dmp
-
memory/2880-133-0x0000000000000000-mapping.dmp