Analysis
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max time kernel
151s -
max time network
120s -
platform
windows10_x64 -
resource
win10-en-20210920 -
submitted
22-09-2021 13:22
Behavioral task
behavioral1
Sample
cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe
Resource
win7v20210408
General
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Target
cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe
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Size
690KB
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MD5
723baed58f250509d277de75a3178be8
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SHA1
d5c190e5acb7f4e8d9f6286e4f48fa9bfcd1325c
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SHA256
cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e
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SHA512
01af4ae85aad93e59cc93f82f82c2fc8f7b4f9166a7abdcb32b85dfd417dd379064aead960746b51d0f147fdec64ea261470de31e6fb67add96836a0651c954b
Malware Config
Extracted
darkcomet
Guest16
fantomazzz.ddns.net:1604
DC_MUTEX-H4MJNYC
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InstallPath
MSDCSC\msdcsc.exe
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gencode
zASJD9aEWq6M
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install
true
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offline_keylogger
true
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persistence
true
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reg_key
MicroUpdate
Signatures
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Modifies WinLogon for persistence 2 TTPs 1 IoCs
Processes:
cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.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" cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe -
Modifies firewall policy service 2 TTPs 3 IoCs
Processes:
msdcsc.exedescription ioc process 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 -
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 -
Disables RegEdit via registry modification
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Disables Task Manager via registry modification
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Executes dropped EXE 1 IoCs
Processes:
msdcsc.exepid process 3100 msdcsc.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000\Control Panel\International\Geo\Nation cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.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 2 IoCs
Processes:
cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exemsdcsc.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Roaming\\MSDCSC\\msdcsc.exe" cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe Set value (str) \REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Roaming\\MSDCSC\\msdcsc.exe" msdcsc.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:
cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
msdcsc.exepid process 3100 msdcsc.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
Processes:
cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exemsdcsc.exedescription pid process Token: SeIncreaseQuotaPrivilege 2008 cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe Token: SeSecurityPrivilege 2008 cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe Token: SeTakeOwnershipPrivilege 2008 cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe Token: SeLoadDriverPrivilege 2008 cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe Token: SeSystemProfilePrivilege 2008 cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe Token: SeSystemtimePrivilege 2008 cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe Token: SeProfSingleProcessPrivilege 2008 cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe Token: SeIncBasePriorityPrivilege 2008 cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe Token: SeCreatePagefilePrivilege 2008 cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe Token: SeBackupPrivilege 2008 cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe Token: SeRestorePrivilege 2008 cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe Token: SeShutdownPrivilege 2008 cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe Token: SeDebugPrivilege 2008 cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe Token: SeSystemEnvironmentPrivilege 2008 cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe Token: SeChangeNotifyPrivilege 2008 cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe Token: SeRemoteShutdownPrivilege 2008 cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe Token: SeUndockPrivilege 2008 cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe Token: SeManageVolumePrivilege 2008 cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe Token: SeImpersonatePrivilege 2008 cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe Token: SeCreateGlobalPrivilege 2008 cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe Token: 33 2008 cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe Token: 34 2008 cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe Token: 35 2008 cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe Token: 36 2008 cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe Token: SeIncreaseQuotaPrivilege 3100 msdcsc.exe Token: SeSecurityPrivilege 3100 msdcsc.exe Token: SeTakeOwnershipPrivilege 3100 msdcsc.exe Token: SeLoadDriverPrivilege 3100 msdcsc.exe Token: SeSystemProfilePrivilege 3100 msdcsc.exe Token: SeSystemtimePrivilege 3100 msdcsc.exe Token: SeProfSingleProcessPrivilege 3100 msdcsc.exe Token: SeIncBasePriorityPrivilege 3100 msdcsc.exe Token: SeCreatePagefilePrivilege 3100 msdcsc.exe Token: SeBackupPrivilege 3100 msdcsc.exe Token: SeRestorePrivilege 3100 msdcsc.exe Token: SeShutdownPrivilege 3100 msdcsc.exe Token: SeDebugPrivilege 3100 msdcsc.exe Token: SeSystemEnvironmentPrivilege 3100 msdcsc.exe Token: SeChangeNotifyPrivilege 3100 msdcsc.exe Token: SeRemoteShutdownPrivilege 3100 msdcsc.exe Token: SeUndockPrivilege 3100 msdcsc.exe Token: SeManageVolumePrivilege 3100 msdcsc.exe Token: SeImpersonatePrivilege 3100 msdcsc.exe Token: SeCreateGlobalPrivilege 3100 msdcsc.exe Token: 33 3100 msdcsc.exe Token: 34 3100 msdcsc.exe Token: 35 3100 msdcsc.exe Token: 36 3100 msdcsc.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
msdcsc.exepid process 3100 msdcsc.exe -
Suspicious use of WriteProcessMemory 37 IoCs
Processes:
cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.execmd.execmd.exemsdcsc.exedescription pid process target process PID 2008 wrote to memory of 2344 2008 cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe cmd.exe PID 2008 wrote to memory of 2344 2008 cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe cmd.exe PID 2008 wrote to memory of 2344 2008 cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe cmd.exe PID 2008 wrote to memory of 2480 2008 cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe cmd.exe PID 2008 wrote to memory of 2480 2008 cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe cmd.exe PID 2008 wrote to memory of 2480 2008 cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe cmd.exe PID 2480 wrote to memory of 3748 2480 cmd.exe attrib.exe PID 2480 wrote to memory of 3748 2480 cmd.exe attrib.exe PID 2480 wrote to memory of 3748 2480 cmd.exe attrib.exe PID 2344 wrote to memory of 3012 2344 cmd.exe attrib.exe PID 2344 wrote to memory of 3012 2344 cmd.exe attrib.exe PID 2344 wrote to memory of 3012 2344 cmd.exe attrib.exe PID 2008 wrote to memory of 3100 2008 cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe msdcsc.exe PID 2008 wrote to memory of 3100 2008 cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe msdcsc.exe PID 2008 wrote to memory of 3100 2008 cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe msdcsc.exe PID 3100 wrote to memory of 2584 3100 msdcsc.exe notepad.exe PID 3100 wrote to memory of 2584 3100 msdcsc.exe notepad.exe PID 3100 wrote to memory of 2584 3100 msdcsc.exe notepad.exe PID 3100 wrote to memory of 2584 3100 msdcsc.exe notepad.exe PID 3100 wrote to memory of 2584 3100 msdcsc.exe notepad.exe PID 3100 wrote to memory of 2584 3100 msdcsc.exe notepad.exe PID 3100 wrote to memory of 2584 3100 msdcsc.exe notepad.exe PID 3100 wrote to memory of 2584 3100 msdcsc.exe notepad.exe PID 3100 wrote to memory of 2584 3100 msdcsc.exe notepad.exe PID 3100 wrote to memory of 2584 3100 msdcsc.exe notepad.exe PID 3100 wrote to memory of 2584 3100 msdcsc.exe notepad.exe PID 3100 wrote to memory of 2584 3100 msdcsc.exe notepad.exe PID 3100 wrote to memory of 2584 3100 msdcsc.exe notepad.exe PID 3100 wrote to memory of 2584 3100 msdcsc.exe notepad.exe PID 3100 wrote to memory of 2584 3100 msdcsc.exe notepad.exe PID 3100 wrote to memory of 2584 3100 msdcsc.exe notepad.exe PID 3100 wrote to memory of 2584 3100 msdcsc.exe notepad.exe PID 3100 wrote to memory of 2584 3100 msdcsc.exe notepad.exe PID 3100 wrote to memory of 2584 3100 msdcsc.exe notepad.exe PID 3100 wrote to memory of 2584 3100 msdcsc.exe notepad.exe PID 3100 wrote to memory of 2584 3100 msdcsc.exe notepad.exe PID 3100 wrote to memory of 2584 3100 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 3012 attrib.exe 3748 attrib.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe"C:\Users\Admin\AppData\Local\Temp\cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.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\cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe" +s +h2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\attrib.exeattrib "C:\Users\Admin\AppData\Local\Temp\cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe" +s +h3⤵
- 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⤵
- Views/modifies file attributes
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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 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
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Roaming\MSDCSC\msdcsc.exeMD5
723baed58f250509d277de75a3178be8
SHA1d5c190e5acb7f4e8d9f6286e4f48fa9bfcd1325c
SHA256cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e
SHA51201af4ae85aad93e59cc93f82f82c2fc8f7b4f9166a7abdcb32b85dfd417dd379064aead960746b51d0f147fdec64ea261470de31e6fb67add96836a0651c954b
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C:\Users\Admin\AppData\Roaming\MSDCSC\msdcsc.exeMD5
723baed58f250509d277de75a3178be8
SHA1d5c190e5acb7f4e8d9f6286e4f48fa9bfcd1325c
SHA256cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e
SHA51201af4ae85aad93e59cc93f82f82c2fc8f7b4f9166a7abdcb32b85dfd417dd379064aead960746b51d0f147fdec64ea261470de31e6fb67add96836a0651c954b
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memory/2008-115-0x0000000002220000-0x0000000002221000-memory.dmpFilesize
4KB
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memory/2344-116-0x0000000000000000-mapping.dmp
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memory/2480-117-0x0000000000000000-mapping.dmp
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memory/2584-123-0x0000000000000000-mapping.dmp
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memory/2584-125-0x0000000002F20000-0x0000000002F21000-memory.dmpFilesize
4KB
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memory/3012-119-0x0000000000000000-mapping.dmp
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memory/3100-120-0x0000000000000000-mapping.dmp
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memory/3100-124-0x00000000020F0000-0x00000000020F1000-memory.dmpFilesize
4KB
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memory/3748-118-0x0000000000000000-mapping.dmp