Analysis
-
max time kernel
150s -
max time network
147s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
15-11-2020 22:45
Static task
static1
Behavioral task
behavioral1
Sample
84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43.exe
Resource
win7v20201028
General
-
Target
84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43.exe
-
Size
252KB
-
MD5
256af85b0eddc2327bab24817097194a
-
SHA1
215e426721e69b35e3535f1dc8a868ab06f12389
-
SHA256
84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43
-
SHA512
54d006945b25fe51921c449a8d164c7c1c8c5ce48b51e42c6a32d26f26f412b7306856c8a44e73772f659c85dc989bc57f250f5aed9e0747fbe627d682db2a9c
Malware Config
Extracted
darkcomet
lox
logan.bounceme.net:1604
DC_MUTEX-HKYPFJY
-
InstallPath
MSDCSC\msdcsc.exe
-
gencode
UoVSUsqvZCVe
-
install
true
-
offline_keylogger
true
-
persistence
true
-
reg_key
vshost
Signatures
-
Modifies WinLogon for persistence 2 TTPs 1 IoCs
Processes:
84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\AppData\\Roaming\\MSDCSC\\msdcsc.exe" 84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43.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\EnableFirewall = "0" iexplore.exe 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 -
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 -
Disables RegEdit via registry modification
-
Disables Task Manager via registry modification
-
Executes dropped EXE 1 IoCs
Processes:
msdcsc.exepid process 3404 msdcsc.exe -
Processes:
resource yara_rule C:\Users\Admin\AppData\Roaming\MSDCSC\msdcsc.exe upx C:\Users\Admin\AppData\Roaming\MSDCSC\msdcsc.exe upx behavioral2/memory/2932-6-0x0000000000400000-0x00000000004B7000-memory.dmp upx behavioral2/memory/2932-8-0x0000000000400000-0x00000000004B7000-memory.dmp upx behavioral2/memory/2932-9-0x0000000000400000-0x00000000004B7000-memory.dmp upx -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Control Panel\International\Geo\Nation 84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43.exe -
Deletes itself 1 IoCs
Processes:
notepad.exepid process 2468 notepad.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 3 IoCs
Processes:
84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43.exemsdcsc.exeiexplore.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run\vshost = "C:\\Users\\Admin\\AppData\\Roaming\\MSDCSC\\msdcsc.exe" 84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43.exe Set value (str) \REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run\vshost = "C:\\Users\\Admin\\AppData\\Roaming\\MSDCSC\\msdcsc.exe" msdcsc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run\vshost = "C:\\Users\\Admin\\AppData\\Roaming\\MSDCSC\\msdcsc.exe" iexplore.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
msdcsc.exedescription pid process target process PID 3404 set thread context of 2932 3404 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:
84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance 84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
Processes:
84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43.exemsdcsc.exeiexplore.exedescription pid process Token: SeIncreaseQuotaPrivilege 3976 84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43.exe Token: SeSecurityPrivilege 3976 84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43.exe Token: SeTakeOwnershipPrivilege 3976 84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43.exe Token: SeLoadDriverPrivilege 3976 84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43.exe Token: SeSystemProfilePrivilege 3976 84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43.exe Token: SeSystemtimePrivilege 3976 84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43.exe Token: SeProfSingleProcessPrivilege 3976 84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43.exe Token: SeIncBasePriorityPrivilege 3976 84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43.exe Token: SeCreatePagefilePrivilege 3976 84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43.exe Token: SeBackupPrivilege 3976 84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43.exe Token: SeRestorePrivilege 3976 84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43.exe Token: SeShutdownPrivilege 3976 84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43.exe Token: SeDebugPrivilege 3976 84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43.exe Token: SeSystemEnvironmentPrivilege 3976 84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43.exe Token: SeChangeNotifyPrivilege 3976 84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43.exe Token: SeRemoteShutdownPrivilege 3976 84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43.exe Token: SeUndockPrivilege 3976 84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43.exe Token: SeManageVolumePrivilege 3976 84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43.exe Token: SeImpersonatePrivilege 3976 84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43.exe Token: SeCreateGlobalPrivilege 3976 84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43.exe Token: 33 3976 84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43.exe Token: 34 3976 84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43.exe Token: 35 3976 84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43.exe Token: 36 3976 84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43.exe Token: SeIncreaseQuotaPrivilege 3404 msdcsc.exe Token: SeSecurityPrivilege 3404 msdcsc.exe Token: SeTakeOwnershipPrivilege 3404 msdcsc.exe Token: SeLoadDriverPrivilege 3404 msdcsc.exe Token: SeSystemProfilePrivilege 3404 msdcsc.exe Token: SeSystemtimePrivilege 3404 msdcsc.exe Token: SeProfSingleProcessPrivilege 3404 msdcsc.exe Token: SeIncBasePriorityPrivilege 3404 msdcsc.exe Token: SeCreatePagefilePrivilege 3404 msdcsc.exe Token: SeBackupPrivilege 3404 msdcsc.exe Token: SeRestorePrivilege 3404 msdcsc.exe Token: SeShutdownPrivilege 3404 msdcsc.exe Token: SeDebugPrivilege 3404 msdcsc.exe Token: SeSystemEnvironmentPrivilege 3404 msdcsc.exe Token: SeChangeNotifyPrivilege 3404 msdcsc.exe Token: SeRemoteShutdownPrivilege 3404 msdcsc.exe Token: SeUndockPrivilege 3404 msdcsc.exe Token: SeManageVolumePrivilege 3404 msdcsc.exe Token: SeImpersonatePrivilege 3404 msdcsc.exe Token: SeCreateGlobalPrivilege 3404 msdcsc.exe Token: 33 3404 msdcsc.exe Token: 34 3404 msdcsc.exe Token: 35 3404 msdcsc.exe Token: 36 3404 msdcsc.exe Token: SeIncreaseQuotaPrivilege 2932 iexplore.exe Token: SeSecurityPrivilege 2932 iexplore.exe Token: SeTakeOwnershipPrivilege 2932 iexplore.exe Token: SeLoadDriverPrivilege 2932 iexplore.exe Token: SeSystemProfilePrivilege 2932 iexplore.exe Token: SeSystemtimePrivilege 2932 iexplore.exe Token: SeProfSingleProcessPrivilege 2932 iexplore.exe Token: SeIncBasePriorityPrivilege 2932 iexplore.exe Token: SeCreatePagefilePrivilege 2932 iexplore.exe Token: SeBackupPrivilege 2932 iexplore.exe Token: SeRestorePrivilege 2932 iexplore.exe Token: SeShutdownPrivilege 2932 iexplore.exe Token: SeDebugPrivilege 2932 iexplore.exe Token: SeSystemEnvironmentPrivilege 2932 iexplore.exe Token: SeChangeNotifyPrivilege 2932 iexplore.exe Token: SeRemoteShutdownPrivilege 2932 iexplore.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
iexplore.exepid process 2932 iexplore.exe -
Suspicious use of WriteProcessMemory 25 IoCs
Processes:
84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43.exemsdcsc.exedescription pid process target process PID 3976 wrote to memory of 2468 3976 84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43.exe notepad.exe PID 3976 wrote to memory of 2468 3976 84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43.exe notepad.exe PID 3976 wrote to memory of 2468 3976 84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43.exe notepad.exe PID 3976 wrote to memory of 2468 3976 84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43.exe notepad.exe PID 3976 wrote to memory of 2468 3976 84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43.exe notepad.exe PID 3976 wrote to memory of 2468 3976 84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43.exe notepad.exe PID 3976 wrote to memory of 2468 3976 84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43.exe notepad.exe PID 3976 wrote to memory of 2468 3976 84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43.exe notepad.exe PID 3976 wrote to memory of 2468 3976 84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43.exe notepad.exe PID 3976 wrote to memory of 2468 3976 84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43.exe notepad.exe PID 3976 wrote to memory of 2468 3976 84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43.exe notepad.exe PID 3976 wrote to memory of 2468 3976 84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43.exe notepad.exe PID 3976 wrote to memory of 2468 3976 84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43.exe notepad.exe PID 3976 wrote to memory of 2468 3976 84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43.exe notepad.exe PID 3976 wrote to memory of 2468 3976 84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43.exe notepad.exe PID 3976 wrote to memory of 2468 3976 84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43.exe notepad.exe PID 3976 wrote to memory of 2468 3976 84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43.exe notepad.exe PID 3976 wrote to memory of 3404 3976 84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43.exe msdcsc.exe PID 3976 wrote to memory of 3404 3976 84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43.exe msdcsc.exe PID 3976 wrote to memory of 3404 3976 84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43.exe msdcsc.exe PID 3404 wrote to memory of 2932 3404 msdcsc.exe iexplore.exe PID 3404 wrote to memory of 2932 3404 msdcsc.exe iexplore.exe PID 3404 wrote to memory of 2932 3404 msdcsc.exe iexplore.exe PID 3404 wrote to memory of 2932 3404 msdcsc.exe iexplore.exe PID 3404 wrote to memory of 2932 3404 msdcsc.exe iexplore.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
-
C:\Users\Admin\AppData\Local\Temp\84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43.exe"C:\Users\Admin\AppData\Local\Temp\84b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43.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:\Windows\SysWOW64\notepad.exenotepad2⤵
- Deletes itself
-
C:\Users\Admin\AppData\Roaming\MSDCSC\msdcsc.exe"C:\Users\Admin\AppData\Roaming\MSDCSC\msdcsc.exe"2⤵
- Modifies firewall policy service
- Modifies security service
- Executes dropped EXE
- Windows security modification
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
-
C:\Program Files (x86)\Internet Explorer\iexplore.exe"C:\Program Files (x86)\Internet Explorer\iexplore.exe"3⤵
- Modifies firewall policy service
- Modifies security service
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
-
C:\Users\Admin\AppData\Roaming\MSDCSC\msdcsc.exeMD5
256af85b0eddc2327bab24817097194a
SHA1215e426721e69b35e3535f1dc8a868ab06f12389
SHA25684b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43
SHA51254d006945b25fe51921c449a8d164c7c1c8c5ce48b51e42c6a32d26f26f412b7306856c8a44e73772f659c85dc989bc57f250f5aed9e0747fbe627d682db2a9c
-
C:\Users\Admin\AppData\Roaming\MSDCSC\msdcsc.exeMD5
256af85b0eddc2327bab24817097194a
SHA1215e426721e69b35e3535f1dc8a868ab06f12389
SHA25684b059d0b1c74fbbcb4bea1cc2da4adcbfc67de84ea9a8c37ee8da96100c5c43
SHA51254d006945b25fe51921c449a8d164c7c1c8c5ce48b51e42c6a32d26f26f412b7306856c8a44e73772f659c85dc989bc57f250f5aed9e0747fbe627d682db2a9c
-
memory/2468-0-0x0000000000000000-mapping.dmp
-
memory/2468-2-0x0000000000000000-mapping.dmp
-
memory/2468-1-0x0000000003060000-0x0000000003061000-memory.dmpFilesize
4KB
-
memory/2932-6-0x0000000000400000-0x00000000004B7000-memory.dmpFilesize
732KB
-
memory/2932-7-0x00000000004B5850-mapping.dmp
-
memory/2932-8-0x0000000000400000-0x00000000004B7000-memory.dmpFilesize
732KB
-
memory/2932-9-0x0000000000400000-0x00000000004B7000-memory.dmpFilesize
732KB
-
memory/3404-3-0x0000000000000000-mapping.dmp