Analysis
-
max time kernel
119s -
max time network
120s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
07-01-2025 13:42
Behavioral task
behavioral1
Sample
dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe
Resource
win7-20240903-en
windows7-x64
22 signatures
120 seconds
General
-
Target
dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe
-
Size
659KB
-
MD5
8f8f755df17f3dd61a628934b055b4b9
-
SHA1
7841cb19673e4d23fda1eda402c0f6ca6b369dad
-
SHA256
dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd
-
SHA512
2f36f64c61f975c6007962f08e21eb7fef8c3030f357d86cfe3d86ca456b1b02265895cb28ca631eee3882170345bbe224d044ac63af7ae931f3d7dcd0c29771
-
SSDEEP
12288:O9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/hu:aZ1xuVVjfFoynPaVBUR8f+kN10EBU
Malware Config
Extracted
Family
darkcomet
Botnet
Guest16
C2
46.105.250.97:1604
Mutex
DC_MUTEX-3TMAVLG
Attributes
-
InstallPath
MSDCSC\msdcsc.exe
-
gencode
l152Z1g7L1AT
-
install
true
-
offline_keylogger
true
-
persistence
true
-
reg_key
MicroUpdate
Signatures
-
Darkcomet family
-
Modifies WinLogon for persistence 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe" dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe -
Modifies firewall policy service 3 TTPs 3 IoCs
description 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
description ioc Process Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\wscsvc\Start = "4" msdcsc.exe -
description 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
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1" msdcsc.exe -
Disables Task Manager via registry modification
-
Sets file to hidden 1 TTPs 2 IoCs
Modifies file attributes to stop it showing in Explorer etc.
pid Process 2720 attrib.exe 2756 attrib.exe -
Deletes itself 1 IoCs
pid Process 1788 notepad.exe -
Executes dropped EXE 1 IoCs
pid Process 2828 msdcsc.exe -
Loads dropped DLL 2 IoCs
pid Process 2548 dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe 2548 dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe -
description 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 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe" dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe Set value (str) \REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe" msdcsc.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
-
System Location Discovery: System Language Discovery 1 TTPs 8 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language msdcsc.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language notepad.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language notepad.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language attrib.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language attrib.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2828 msdcsc.exe -
Suspicious use of AdjustPrivilegeToken 46 IoCs
description pid Process Token: SeIncreaseQuotaPrivilege 2548 dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe Token: SeSecurityPrivilege 2548 dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe Token: SeTakeOwnershipPrivilege 2548 dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe Token: SeLoadDriverPrivilege 2548 dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe Token: SeSystemProfilePrivilege 2548 dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe Token: SeSystemtimePrivilege 2548 dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe Token: SeProfSingleProcessPrivilege 2548 dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe Token: SeIncBasePriorityPrivilege 2548 dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe Token: SeCreatePagefilePrivilege 2548 dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe Token: SeBackupPrivilege 2548 dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe Token: SeRestorePrivilege 2548 dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe Token: SeShutdownPrivilege 2548 dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe Token: SeDebugPrivilege 2548 dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe Token: SeSystemEnvironmentPrivilege 2548 dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe Token: SeChangeNotifyPrivilege 2548 dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe Token: SeRemoteShutdownPrivilege 2548 dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe Token: SeUndockPrivilege 2548 dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe Token: SeManageVolumePrivilege 2548 dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe Token: SeImpersonatePrivilege 2548 dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe Token: SeCreateGlobalPrivilege 2548 dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe Token: 33 2548 dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe Token: 34 2548 dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe Token: 35 2548 dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe Token: SeIncreaseQuotaPrivilege 2828 msdcsc.exe Token: SeSecurityPrivilege 2828 msdcsc.exe Token: SeTakeOwnershipPrivilege 2828 msdcsc.exe Token: SeLoadDriverPrivilege 2828 msdcsc.exe Token: SeSystemProfilePrivilege 2828 msdcsc.exe Token: SeSystemtimePrivilege 2828 msdcsc.exe Token: SeProfSingleProcessPrivilege 2828 msdcsc.exe Token: SeIncBasePriorityPrivilege 2828 msdcsc.exe Token: SeCreatePagefilePrivilege 2828 msdcsc.exe Token: SeBackupPrivilege 2828 msdcsc.exe Token: SeRestorePrivilege 2828 msdcsc.exe Token: SeShutdownPrivilege 2828 msdcsc.exe Token: SeDebugPrivilege 2828 msdcsc.exe Token: SeSystemEnvironmentPrivilege 2828 msdcsc.exe Token: SeChangeNotifyPrivilege 2828 msdcsc.exe Token: SeRemoteShutdownPrivilege 2828 msdcsc.exe Token: SeUndockPrivilege 2828 msdcsc.exe Token: SeManageVolumePrivilege 2828 msdcsc.exe Token: SeImpersonatePrivilege 2828 msdcsc.exe Token: SeCreateGlobalPrivilege 2828 msdcsc.exe Token: 33 2828 msdcsc.exe Token: 34 2828 msdcsc.exe Token: 35 2828 msdcsc.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 2828 msdcsc.exe -
Suspicious use of WriteProcessMemory 61 IoCs
description pid Process procid_target PID 2548 wrote to memory of 2404 2548 dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe 30 PID 2548 wrote to memory of 2404 2548 dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe 30 PID 2548 wrote to memory of 2404 2548 dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe 30 PID 2548 wrote to memory of 2404 2548 dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe 30 PID 2548 wrote to memory of 2696 2548 dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe 31 PID 2548 wrote to memory of 2696 2548 dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe 31 PID 2548 wrote to memory of 2696 2548 dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe 31 PID 2548 wrote to memory of 2696 2548 dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe 31 PID 2548 wrote to memory of 1788 2548 dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe 33 PID 2548 wrote to memory of 1788 2548 dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe 33 PID 2548 wrote to memory of 1788 2548 dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe 33 PID 2548 wrote to memory of 1788 2548 dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe 33 PID 2548 wrote to memory of 1788 2548 dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe 33 PID 2548 wrote to memory of 1788 2548 dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe 33 PID 2548 wrote to memory of 1788 2548 dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe 33 PID 2548 wrote to memory of 1788 2548 dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe 33 PID 2548 wrote to memory of 1788 2548 dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe 33 PID 2548 wrote to memory of 1788 2548 dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe 33 PID 2548 wrote to memory of 1788 2548 dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe 33 PID 2548 wrote to memory of 1788 2548 dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe 33 PID 2548 wrote to memory of 1788 2548 dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe 33 PID 2548 wrote to memory of 1788 2548 dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe 33 PID 2548 wrote to memory of 1788 2548 dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe 33 PID 2548 wrote to memory of 1788 2548 dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe 33 PID 2548 wrote to memory of 1788 2548 dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe 33 PID 2548 wrote to memory of 1788 2548 dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe 33 PID 2696 wrote to memory of 2720 2696 cmd.exe 35 PID 2696 wrote to memory of 2720 2696 cmd.exe 35 PID 2696 wrote to memory of 2720 2696 cmd.exe 35 PID 2696 wrote to memory of 2720 2696 cmd.exe 35 PID 2404 wrote to memory of 2756 2404 cmd.exe 36 PID 2404 wrote to memory of 2756 2404 cmd.exe 36 PID 2404 wrote to memory of 2756 2404 cmd.exe 36 PID 2404 wrote to memory of 2756 2404 cmd.exe 36 PID 2548 wrote to memory of 2828 2548 dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe 37 PID 2548 wrote to memory of 2828 2548 dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe 37 PID 2548 wrote to memory of 2828 2548 dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe 37 PID 2548 wrote to memory of 2828 2548 dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe 37 PID 2828 wrote to memory of 2616 2828 msdcsc.exe 38 PID 2828 wrote to memory of 2616 2828 msdcsc.exe 38 PID 2828 wrote to memory of 2616 2828 msdcsc.exe 38 PID 2828 wrote to memory of 2616 2828 msdcsc.exe 38 PID 2828 wrote to memory of 2616 2828 msdcsc.exe 38 PID 2828 wrote to memory of 2616 2828 msdcsc.exe 38 PID 2828 wrote to memory of 2616 2828 msdcsc.exe 38 PID 2828 wrote to memory of 2616 2828 msdcsc.exe 38 PID 2828 wrote to memory of 2616 2828 msdcsc.exe 38 PID 2828 wrote to memory of 2616 2828 msdcsc.exe 38 PID 2828 wrote to memory of 2616 2828 msdcsc.exe 38 PID 2828 wrote to memory of 2616 2828 msdcsc.exe 38 PID 2828 wrote to memory of 2616 2828 msdcsc.exe 38 PID 2828 wrote to memory of 2616 2828 msdcsc.exe 38 PID 2828 wrote to memory of 2616 2828 msdcsc.exe 38 PID 2828 wrote to memory of 2616 2828 msdcsc.exe 38 PID 2828 wrote to memory of 2616 2828 msdcsc.exe 38 PID 2828 wrote to memory of 2616 2828 msdcsc.exe 38 PID 2828 wrote to memory of 2616 2828 msdcsc.exe 38 PID 2828 wrote to memory of 2616 2828 msdcsc.exe 38 PID 2828 wrote to memory of 2616 2828 msdcsc.exe 38 PID 2828 wrote to memory of 2616 2828 msdcsc.exe 38 PID 2828 wrote to memory of 2616 2828 msdcsc.exe 38 -
System policy modification 1 TTPs 3 IoCs
description 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
pid Process 2720 attrib.exe 2756 attrib.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe"C:\Users\Admin\AppData\Local\Temp\dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe"1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2548 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe" +s +h2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2404 -
C:\Windows\SysWOW64\attrib.exeattrib "C:\Users\Admin\AppData\Local\Temp\dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd.exe" +s +h3⤵
- Sets file to hidden
- System Location Discovery: System Language Discovery
- Views/modifies file attributes
PID:2756
-
-
-
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2696 -
C:\Windows\SysWOW64\attrib.exeattrib "C:\Users\Admin\AppData\Local\Temp" +s +h3⤵
- Sets file to hidden
- System Location Discovery: System Language Discovery
- Views/modifies file attributes
PID:2720
-
-
-
C:\Windows\SysWOW64\notepad.exenotepad2⤵
- Deletes itself
- System Location Discovery: System Language Discovery
PID:1788
-
-
C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"C:\Users\Admin\AppData\Local\Temp\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
- System Location Discovery: System Language Discovery
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- System policy modification
PID:2828 -
C:\Windows\SysWOW64\notepad.exenotepad3⤵
- System Location Discovery: System Language Discovery
PID:2616
-
-
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Create or Modify System Process
2Windows Service
2Privilege Escalation
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Create or Modify System Process
2Windows Service
2Defense Evasion
Hide Artifacts
2Hidden Files and Directories
2Impair Defenses
3Disable or Modify System Firewall
1Disable or Modify Tools
2Modify Registry
7Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
659KB
MD58f8f755df17f3dd61a628934b055b4b9
SHA17841cb19673e4d23fda1eda402c0f6ca6b369dad
SHA256dc27c0a88d38ac8b30573a8868c920bf2d537fe381950a85716d15e4343254dd
SHA5122f36f64c61f975c6007962f08e21eb7fef8c3030f357d86cfe3d86ca456b1b02265895cb28ca631eee3882170345bbe224d044ac63af7ae931f3d7dcd0c29771