Analysis
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max time kernel
149s -
max time network
140s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
02/03/2025, 01:17
Behavioral task
behavioral1
Sample
DRB50_501377699da121100bc6e9180ecf9471b85264c2ea22641701b7d21995e3c3bb.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
DRB50_501377699da121100bc6e9180ecf9471b85264c2ea22641701b7d21995e3c3bb.exe
Resource
win10v2004-20250217-en
General
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Target
DRB50_501377699da121100bc6e9180ecf9471b85264c2ea22641701b7d21995e3c3bb.exe
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Size
1.1MB
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MD5
a77502350cda394c2d5545f3e0978d6c
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SHA1
cd2852066d18f90cccda274627d754cd7a10a901
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SHA256
501377699da121100bc6e9180ecf9471b85264c2ea22641701b7d21995e3c3bb
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SHA512
230391cfa3c129317c5efc312021acdc7b7f3f7f95639e6f904217eacf83e5e4542000b26530fada8b2e8ed0805dab5851e2a1803e227f9dcaa8fcb6b9558b4c
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SSDEEP
24576:D1Z1xuVVjfFoynPaVBUR8f+kN10EBmmbm:DPQDgok30dmbm
Malware Config
Extracted
darkcomet
Guest16
egegeg.duckdns.org:1604
DC_MUTEX-GMXC7Q3
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InstallPath
MSDCSC\msdcsc.exe
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gencode
bEqrgGM1ijfq
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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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Darkcomet family
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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\\Documents\\MSDCSC\\msdcsc.exe" F.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 -
Windows security bypass 2 TTPs 2 IoCs
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-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1" msdcsc.exe -
Disables Task Manager via registry modification
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Sets file to hidden 1 TTPs 2 IoCs
Modifies file attributes to stop it showing in Explorer etc.
pid Process 2836 attrib.exe 2996 attrib.exe -
Executes dropped EXE 2 IoCs
pid Process 772 F.EXE 2240 msdcsc.exe -
Loads dropped DLL 4 IoCs
pid Process 3044 DRB50_501377699da121100bc6e9180ecf9471b85264c2ea22641701b7d21995e3c3bb.exe 3044 DRB50_501377699da121100bc6e9180ecf9471b85264c2ea22641701b7d21995e3c3bb.exe 772 F.EXE 772 F.EXE -
Windows security modification 2 TTPs 2 IoCs
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 -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe" F.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe" msdcsc.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 9 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 F.EXE Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language notepad.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language attrib.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 msdcsc.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language notepad.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language DRB50_501377699da121100bc6e9180ecf9471b85264c2ea22641701b7d21995e3c3bb.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2240 msdcsc.exe -
Suspicious use of AdjustPrivilegeToken 46 IoCs
description pid Process Token: SeIncreaseQuotaPrivilege 772 F.EXE Token: SeSecurityPrivilege 772 F.EXE Token: SeTakeOwnershipPrivilege 772 F.EXE Token: SeLoadDriverPrivilege 772 F.EXE Token: SeSystemProfilePrivilege 772 F.EXE Token: SeSystemtimePrivilege 772 F.EXE Token: SeProfSingleProcessPrivilege 772 F.EXE Token: SeIncBasePriorityPrivilege 772 F.EXE Token: SeCreatePagefilePrivilege 772 F.EXE Token: SeBackupPrivilege 772 F.EXE Token: SeRestorePrivilege 772 F.EXE Token: SeShutdownPrivilege 772 F.EXE Token: SeDebugPrivilege 772 F.EXE Token: SeSystemEnvironmentPrivilege 772 F.EXE Token: SeChangeNotifyPrivilege 772 F.EXE Token: SeRemoteShutdownPrivilege 772 F.EXE Token: SeUndockPrivilege 772 F.EXE Token: SeManageVolumePrivilege 772 F.EXE Token: SeImpersonatePrivilege 772 F.EXE Token: SeCreateGlobalPrivilege 772 F.EXE Token: 33 772 F.EXE Token: 34 772 F.EXE Token: 35 772 F.EXE Token: SeIncreaseQuotaPrivilege 2240 msdcsc.exe Token: SeSecurityPrivilege 2240 msdcsc.exe Token: SeTakeOwnershipPrivilege 2240 msdcsc.exe Token: SeLoadDriverPrivilege 2240 msdcsc.exe Token: SeSystemProfilePrivilege 2240 msdcsc.exe Token: SeSystemtimePrivilege 2240 msdcsc.exe Token: SeProfSingleProcessPrivilege 2240 msdcsc.exe Token: SeIncBasePriorityPrivilege 2240 msdcsc.exe Token: SeCreatePagefilePrivilege 2240 msdcsc.exe Token: SeBackupPrivilege 2240 msdcsc.exe Token: SeRestorePrivilege 2240 msdcsc.exe Token: SeShutdownPrivilege 2240 msdcsc.exe Token: SeDebugPrivilege 2240 msdcsc.exe Token: SeSystemEnvironmentPrivilege 2240 msdcsc.exe Token: SeChangeNotifyPrivilege 2240 msdcsc.exe Token: SeRemoteShutdownPrivilege 2240 msdcsc.exe Token: SeUndockPrivilege 2240 msdcsc.exe Token: SeManageVolumePrivilege 2240 msdcsc.exe Token: SeImpersonatePrivilege 2240 msdcsc.exe Token: SeCreateGlobalPrivilege 2240 msdcsc.exe Token: 33 2240 msdcsc.exe Token: 34 2240 msdcsc.exe Token: 35 2240 msdcsc.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 2240 msdcsc.exe -
Suspicious use of WriteProcessMemory 64 IoCs
description pid Process procid_target PID 3044 wrote to memory of 772 3044 DRB50_501377699da121100bc6e9180ecf9471b85264c2ea22641701b7d21995e3c3bb.exe 30 PID 3044 wrote to memory of 772 3044 DRB50_501377699da121100bc6e9180ecf9471b85264c2ea22641701b7d21995e3c3bb.exe 30 PID 3044 wrote to memory of 772 3044 DRB50_501377699da121100bc6e9180ecf9471b85264c2ea22641701b7d21995e3c3bb.exe 30 PID 3044 wrote to memory of 772 3044 DRB50_501377699da121100bc6e9180ecf9471b85264c2ea22641701b7d21995e3c3bb.exe 30 PID 772 wrote to memory of 2172 772 F.EXE 31 PID 772 wrote to memory of 2172 772 F.EXE 31 PID 772 wrote to memory of 2172 772 F.EXE 31 PID 772 wrote to memory of 2172 772 F.EXE 31 PID 772 wrote to memory of 2912 772 F.EXE 32 PID 772 wrote to memory of 2912 772 F.EXE 32 PID 772 wrote to memory of 2912 772 F.EXE 32 PID 772 wrote to memory of 2912 772 F.EXE 32 PID 772 wrote to memory of 1968 772 F.EXE 34 PID 772 wrote to memory of 1968 772 F.EXE 34 PID 772 wrote to memory of 1968 772 F.EXE 34 PID 772 wrote to memory of 1968 772 F.EXE 34 PID 772 wrote to memory of 1968 772 F.EXE 34 PID 772 wrote to memory of 1968 772 F.EXE 34 PID 772 wrote to memory of 1968 772 F.EXE 34 PID 772 wrote to memory of 1968 772 F.EXE 34 PID 772 wrote to memory of 1968 772 F.EXE 34 PID 772 wrote to memory of 1968 772 F.EXE 34 PID 772 wrote to memory of 1968 772 F.EXE 34 PID 772 wrote to memory of 1968 772 F.EXE 34 PID 772 wrote to memory of 1968 772 F.EXE 34 PID 772 wrote to memory of 1968 772 F.EXE 34 PID 772 wrote to memory of 1968 772 F.EXE 34 PID 772 wrote to memory of 1968 772 F.EXE 34 PID 772 wrote to memory of 1968 772 F.EXE 34 PID 772 wrote to memory of 1968 772 F.EXE 34 PID 2172 wrote to memory of 2996 2172 cmd.exe 36 PID 2172 wrote to memory of 2996 2172 cmd.exe 36 PID 2172 wrote to memory of 2996 2172 cmd.exe 36 PID 2172 wrote to memory of 2996 2172 cmd.exe 36 PID 2912 wrote to memory of 2836 2912 cmd.exe 37 PID 2912 wrote to memory of 2836 2912 cmd.exe 37 PID 2912 wrote to memory of 2836 2912 cmd.exe 37 PID 2912 wrote to memory of 2836 2912 cmd.exe 37 PID 772 wrote to memory of 2240 772 F.EXE 38 PID 772 wrote to memory of 2240 772 F.EXE 38 PID 772 wrote to memory of 2240 772 F.EXE 38 PID 772 wrote to memory of 2240 772 F.EXE 38 PID 2240 wrote to memory of 316 2240 msdcsc.exe 39 PID 2240 wrote to memory of 316 2240 msdcsc.exe 39 PID 2240 wrote to memory of 316 2240 msdcsc.exe 39 PID 2240 wrote to memory of 316 2240 msdcsc.exe 39 PID 2240 wrote to memory of 316 2240 msdcsc.exe 39 PID 2240 wrote to memory of 316 2240 msdcsc.exe 39 PID 2240 wrote to memory of 316 2240 msdcsc.exe 39 PID 2240 wrote to memory of 316 2240 msdcsc.exe 39 PID 2240 wrote to memory of 316 2240 msdcsc.exe 39 PID 2240 wrote to memory of 316 2240 msdcsc.exe 39 PID 2240 wrote to memory of 316 2240 msdcsc.exe 39 PID 2240 wrote to memory of 316 2240 msdcsc.exe 39 PID 2240 wrote to memory of 316 2240 msdcsc.exe 39 PID 2240 wrote to memory of 316 2240 msdcsc.exe 39 PID 2240 wrote to memory of 316 2240 msdcsc.exe 39 PID 2240 wrote to memory of 316 2240 msdcsc.exe 39 PID 2240 wrote to memory of 316 2240 msdcsc.exe 39 PID 2240 wrote to memory of 316 2240 msdcsc.exe 39 PID 2240 wrote to memory of 316 2240 msdcsc.exe 39 PID 2240 wrote to memory of 316 2240 msdcsc.exe 39 PID 2240 wrote to memory of 316 2240 msdcsc.exe 39 PID 2240 wrote to memory of 316 2240 msdcsc.exe 39 -
System policy modification 1 TTPs 3 IoCs
description ioc Process 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 Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion msdcsc.exe -
Views/modifies file attributes 1 TTPs 2 IoCs
pid Process 2836 attrib.exe 2996 attrib.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\DRB50_501377699da121100bc6e9180ecf9471b85264c2ea22641701b7d21995e3c3bb.exe"C:\Users\Admin\AppData\Local\Temp\DRB50_501377699da121100bc6e9180ecf9471b85264c2ea22641701b7d21995e3c3bb.exe"1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3044 -
C:\Users\Admin\AppData\Local\Temp\F.EXE"C:\Users\Admin\AppData\Local\Temp\F.EXE"2⤵
- Modifies WinLogon for persistence
- Executes dropped EXE
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:772 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\F.EXE" +s +h3⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2172 -
C:\Windows\SysWOW64\attrib.exeattrib "C:\Users\Admin\AppData\Local\Temp\F.EXE" +s +h4⤵
- Sets file to hidden
- System Location Discovery: System Language Discovery
- Views/modifies file attributes
PID:2996
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h3⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2912 -
C:\Windows\SysWOW64\attrib.exeattrib "C:\Users\Admin\AppData\Local\Temp" +s +h4⤵
- Sets file to hidden
- System Location Discovery: System Language Discovery
- Views/modifies file attributes
PID:2836
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C:\Windows\SysWOW64\notepad.exenotepad3⤵
- System Location Discovery: System Language Discovery
PID:1968
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C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"3⤵
- 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:2240 -
C:\Windows\SysWOW64\notepad.exenotepad4⤵
- System Location Discovery: System Language Discovery
PID:316
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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
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Downloads
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Filesize
857KB
MD5c72eec4eb51c62ad455de07d00a77898
SHA10251b8765a12ecb029bae796235e8283f04e96c4
SHA25693435ead1cf9caa1edc3c0018b2a98c05bc0fb44af68331f5562b9aebbae1f80
SHA51231da3b9a762d7a6e512e9cab8d7383e9f855d16e88652b49629ba51ef6f8b93c9032885e89d9ad5af7afad908bce179679883fcea85c86cc15411bae65018322