Analysis
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max time kernel
150s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20250217-en -
resource tags
arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-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-1-5-21-1874072718-2205492803-118941907-1000\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 2328 attrib.exe 2248 attrib.exe -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-1874072718-2205492803-118941907-1000\Control Panel\International\Geo\Nation DRB50_501377699da121100bc6e9180ecf9471b85264c2ea22641701b7d21995e3c3bb.exe Key value queried \REGISTRY\USER\S-1-5-21-1874072718-2205492803-118941907-1000\Control Panel\International\Geo\Nation F.EXE -
Executes dropped EXE 2 IoCs
pid Process 4152 F.EXE 4876 msdcsc.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-1-5-21-1874072718-2205492803-118941907-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe" F.EXE Set value (str) \REGISTRY\USER\S-1-5-21-1874072718-2205492803-118941907-1000\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 cmd.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 F.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 attrib.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language msdcsc.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language DRB50_501377699da121100bc6e9180ecf9471b85264c2ea22641701b7d21995e3c3bb.exe -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\ F.EXE -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 4876 msdcsc.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeIncreaseQuotaPrivilege 4152 F.EXE Token: SeSecurityPrivilege 4152 F.EXE Token: SeTakeOwnershipPrivilege 4152 F.EXE Token: SeLoadDriverPrivilege 4152 F.EXE Token: SeSystemProfilePrivilege 4152 F.EXE Token: SeSystemtimePrivilege 4152 F.EXE Token: SeProfSingleProcessPrivilege 4152 F.EXE Token: SeIncBasePriorityPrivilege 4152 F.EXE Token: SeCreatePagefilePrivilege 4152 F.EXE Token: SeBackupPrivilege 4152 F.EXE Token: SeRestorePrivilege 4152 F.EXE Token: SeShutdownPrivilege 4152 F.EXE Token: SeDebugPrivilege 4152 F.EXE Token: SeSystemEnvironmentPrivilege 4152 F.EXE Token: SeChangeNotifyPrivilege 4152 F.EXE Token: SeRemoteShutdownPrivilege 4152 F.EXE Token: SeUndockPrivilege 4152 F.EXE Token: SeManageVolumePrivilege 4152 F.EXE Token: SeImpersonatePrivilege 4152 F.EXE Token: SeCreateGlobalPrivilege 4152 F.EXE Token: 33 4152 F.EXE Token: 34 4152 F.EXE Token: 35 4152 F.EXE Token: 36 4152 F.EXE Token: SeIncreaseQuotaPrivilege 4876 msdcsc.exe Token: SeSecurityPrivilege 4876 msdcsc.exe Token: SeTakeOwnershipPrivilege 4876 msdcsc.exe Token: SeLoadDriverPrivilege 4876 msdcsc.exe Token: SeSystemProfilePrivilege 4876 msdcsc.exe Token: SeSystemtimePrivilege 4876 msdcsc.exe Token: SeProfSingleProcessPrivilege 4876 msdcsc.exe Token: SeIncBasePriorityPrivilege 4876 msdcsc.exe Token: SeCreatePagefilePrivilege 4876 msdcsc.exe Token: SeBackupPrivilege 4876 msdcsc.exe Token: SeRestorePrivilege 4876 msdcsc.exe Token: SeShutdownPrivilege 4876 msdcsc.exe Token: SeDebugPrivilege 4876 msdcsc.exe Token: SeSystemEnvironmentPrivilege 4876 msdcsc.exe Token: SeChangeNotifyPrivilege 4876 msdcsc.exe Token: SeRemoteShutdownPrivilege 4876 msdcsc.exe Token: SeUndockPrivilege 4876 msdcsc.exe Token: SeManageVolumePrivilege 4876 msdcsc.exe Token: SeImpersonatePrivilege 4876 msdcsc.exe Token: SeCreateGlobalPrivilege 4876 msdcsc.exe Token: 33 4876 msdcsc.exe Token: 34 4876 msdcsc.exe Token: 35 4876 msdcsc.exe Token: 36 4876 msdcsc.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 4876 msdcsc.exe -
Suspicious use of WriteProcessMemory 57 IoCs
description pid Process procid_target PID 820 wrote to memory of 4152 820 DRB50_501377699da121100bc6e9180ecf9471b85264c2ea22641701b7d21995e3c3bb.exe 86 PID 820 wrote to memory of 4152 820 DRB50_501377699da121100bc6e9180ecf9471b85264c2ea22641701b7d21995e3c3bb.exe 86 PID 820 wrote to memory of 4152 820 DRB50_501377699da121100bc6e9180ecf9471b85264c2ea22641701b7d21995e3c3bb.exe 86 PID 4152 wrote to memory of 4724 4152 F.EXE 88 PID 4152 wrote to memory of 4724 4152 F.EXE 88 PID 4152 wrote to memory of 4724 4152 F.EXE 88 PID 4152 wrote to memory of 2756 4152 F.EXE 90 PID 4152 wrote to memory of 2756 4152 F.EXE 90 PID 4152 wrote to memory of 2756 4152 F.EXE 90 PID 4152 wrote to memory of 4732 4152 F.EXE 91 PID 4152 wrote to memory of 4732 4152 F.EXE 91 PID 4152 wrote to memory of 4732 4152 F.EXE 91 PID 4152 wrote to memory of 4732 4152 F.EXE 91 PID 4152 wrote to memory of 4732 4152 F.EXE 91 PID 4152 wrote to memory of 4732 4152 F.EXE 91 PID 4152 wrote to memory of 4732 4152 F.EXE 91 PID 4152 wrote to memory of 4732 4152 F.EXE 91 PID 4152 wrote to memory of 4732 4152 F.EXE 91 PID 4152 wrote to memory of 4732 4152 F.EXE 91 PID 4152 wrote to memory of 4732 4152 F.EXE 91 PID 4152 wrote to memory of 4732 4152 F.EXE 91 PID 4152 wrote to memory of 4732 4152 F.EXE 91 PID 4152 wrote to memory of 4732 4152 F.EXE 91 PID 4152 wrote to memory of 4732 4152 F.EXE 91 PID 4152 wrote to memory of 4732 4152 F.EXE 91 PID 4152 wrote to memory of 4732 4152 F.EXE 91 PID 4724 wrote to memory of 2328 4724 cmd.exe 93 PID 4724 wrote to memory of 2328 4724 cmd.exe 93 PID 4724 wrote to memory of 2328 4724 cmd.exe 93 PID 2756 wrote to memory of 2248 2756 cmd.exe 94 PID 2756 wrote to memory of 2248 2756 cmd.exe 94 PID 2756 wrote to memory of 2248 2756 cmd.exe 94 PID 4152 wrote to memory of 4876 4152 F.EXE 95 PID 4152 wrote to memory of 4876 4152 F.EXE 95 PID 4152 wrote to memory of 4876 4152 F.EXE 95 PID 4876 wrote to memory of 3372 4876 msdcsc.exe 96 PID 4876 wrote to memory of 3372 4876 msdcsc.exe 96 PID 4876 wrote to memory of 3372 4876 msdcsc.exe 96 PID 4876 wrote to memory of 3372 4876 msdcsc.exe 96 PID 4876 wrote to memory of 3372 4876 msdcsc.exe 96 PID 4876 wrote to memory of 3372 4876 msdcsc.exe 96 PID 4876 wrote to memory of 3372 4876 msdcsc.exe 96 PID 4876 wrote to memory of 3372 4876 msdcsc.exe 96 PID 4876 wrote to memory of 3372 4876 msdcsc.exe 96 PID 4876 wrote to memory of 3372 4876 msdcsc.exe 96 PID 4876 wrote to memory of 3372 4876 msdcsc.exe 96 PID 4876 wrote to memory of 3372 4876 msdcsc.exe 96 PID 4876 wrote to memory of 3372 4876 msdcsc.exe 96 PID 4876 wrote to memory of 3372 4876 msdcsc.exe 96 PID 4876 wrote to memory of 3372 4876 msdcsc.exe 96 PID 4876 wrote to memory of 3372 4876 msdcsc.exe 96 PID 4876 wrote to memory of 3372 4876 msdcsc.exe 96 PID 4876 wrote to memory of 3372 4876 msdcsc.exe 96 PID 4876 wrote to memory of 3372 4876 msdcsc.exe 96 PID 4876 wrote to memory of 3372 4876 msdcsc.exe 96 PID 4876 wrote to memory of 3372 4876 msdcsc.exe 96 PID 4876 wrote to memory of 3372 4876 msdcsc.exe 96 -
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 2328 attrib.exe 2248 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⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:820 -
C:\Users\Admin\AppData\Local\Temp\F.EXE"C:\Users\Admin\AppData\Local\Temp\F.EXE"2⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Executes dropped EXE
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4152 -
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:4724 -
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:2328
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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:2756 -
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:2248
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C:\Windows\SysWOW64\notepad.exenotepad3⤵
- System Location Discovery: System Language Discovery
PID:4732
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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:4876 -
C:\Windows\SysWOW64\notepad.exenotepad4⤵
- System Location Discovery: System Language Discovery
PID:3372
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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
Loading Replay Monitor...
Downloads
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Filesize
857KB
MD5c72eec4eb51c62ad455de07d00a77898
SHA10251b8765a12ecb029bae796235e8283f04e96c4
SHA25693435ead1cf9caa1edc3c0018b2a98c05bc0fb44af68331f5562b9aebbae1f80
SHA51231da3b9a762d7a6e512e9cab8d7383e9f855d16e88652b49629ba51ef6f8b93c9032885e89d9ad5af7afad908bce179679883fcea85c86cc15411bae65018322