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Analysis
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max time kernel
45s -
max time network
42s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
21/01/2025, 14:25
Behavioral task
behavioral1
Sample
6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
Resource
win10v2004-20241007-en
General
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Target
6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
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Size
658KB
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MD5
f6351da84168d40fae8da0c156fbab0f
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SHA1
1a2283c85bc5c655f5f2f77f27ec3a9412e8db7e
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SHA256
6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363
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SHA512
9948e83f004bb6d0edf14626660365e469dec444128e820f82066e73177f5de109d048fe226a9cbe95cfc6a99a9d4c501ab3f3900aa2e3677434f03d52694607
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SSDEEP
12288:e9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/hn:qZ1xuVVjfFoynPaVBUR8f+kN10EBV
Malware Config
Extracted
darkcomet
Guest16
test213.no-ip.info:1604
DC_MUTEX-KHNEW06
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InstallPath
MSDCSC\runddl32.exe
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gencode
F6FE8i2BxCpu
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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\\AppData\\Local\\Temp\\MSDCSC\\runddl32.exe" 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe -
Sets file to hidden 1 TTPs 2 IoCs
Modifies file attributes to stop it showing in Explorer etc.
pid Process 3976 attrib.exe 3496 attrib.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe -
Executes dropped EXE 1 IoCs
pid Process 2372 runddl32.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\runddl32.exe" 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe Set value (str) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\runddl32.exe" runddl32.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 7 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 attrib.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language attrib.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language runddl32.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language notepad.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\ 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeIncreaseQuotaPrivilege 1128 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe Token: SeSecurityPrivilege 1128 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe Token: SeTakeOwnershipPrivilege 1128 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe Token: SeLoadDriverPrivilege 1128 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe Token: SeSystemProfilePrivilege 1128 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe Token: SeSystemtimePrivilege 1128 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe Token: SeProfSingleProcessPrivilege 1128 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe Token: SeIncBasePriorityPrivilege 1128 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe Token: SeCreatePagefilePrivilege 1128 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe Token: SeBackupPrivilege 1128 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe Token: SeRestorePrivilege 1128 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe Token: SeShutdownPrivilege 1128 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe Token: SeDebugPrivilege 1128 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe Token: SeSystemEnvironmentPrivilege 1128 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe Token: SeChangeNotifyPrivilege 1128 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe Token: SeRemoteShutdownPrivilege 1128 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe Token: SeUndockPrivilege 1128 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe Token: SeManageVolumePrivilege 1128 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe Token: SeImpersonatePrivilege 1128 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe Token: SeCreateGlobalPrivilege 1128 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe Token: 33 1128 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe Token: 34 1128 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe Token: 35 1128 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe Token: 36 1128 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe Token: SeIncreaseQuotaPrivilege 2372 runddl32.exe Token: SeSecurityPrivilege 2372 runddl32.exe Token: SeTakeOwnershipPrivilege 2372 runddl32.exe Token: SeLoadDriverPrivilege 2372 runddl32.exe Token: SeSystemProfilePrivilege 2372 runddl32.exe Token: SeSystemtimePrivilege 2372 runddl32.exe Token: SeProfSingleProcessPrivilege 2372 runddl32.exe Token: SeIncBasePriorityPrivilege 2372 runddl32.exe Token: SeCreatePagefilePrivilege 2372 runddl32.exe Token: SeBackupPrivilege 2372 runddl32.exe Token: SeRestorePrivilege 2372 runddl32.exe Token: SeShutdownPrivilege 2372 runddl32.exe Token: SeDebugPrivilege 2372 runddl32.exe Token: SeSystemEnvironmentPrivilege 2372 runddl32.exe Token: SeChangeNotifyPrivilege 2372 runddl32.exe Token: SeRemoteShutdownPrivilege 2372 runddl32.exe Token: SeUndockPrivilege 2372 runddl32.exe Token: SeManageVolumePrivilege 2372 runddl32.exe Token: SeImpersonatePrivilege 2372 runddl32.exe Token: SeCreateGlobalPrivilege 2372 runddl32.exe Token: 33 2372 runddl32.exe Token: 34 2372 runddl32.exe Token: 35 2372 runddl32.exe Token: 36 2372 runddl32.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 2372 runddl32.exe -
Suspicious use of WriteProcessMemory 37 IoCs
description pid Process procid_target PID 1128 wrote to memory of 1720 1128 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe 83 PID 1128 wrote to memory of 1720 1128 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe 83 PID 1128 wrote to memory of 1720 1128 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe 83 PID 1128 wrote to memory of 2328 1128 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe 85 PID 1128 wrote to memory of 2328 1128 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe 85 PID 1128 wrote to memory of 2328 1128 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe 85 PID 2328 wrote to memory of 3976 2328 cmd.exe 87 PID 2328 wrote to memory of 3976 2328 cmd.exe 87 PID 2328 wrote to memory of 3976 2328 cmd.exe 87 PID 1720 wrote to memory of 3496 1720 cmd.exe 88 PID 1720 wrote to memory of 3496 1720 cmd.exe 88 PID 1720 wrote to memory of 3496 1720 cmd.exe 88 PID 1128 wrote to memory of 2372 1128 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe 89 PID 1128 wrote to memory of 2372 1128 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe 89 PID 1128 wrote to memory of 2372 1128 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe 89 PID 2372 wrote to memory of 4968 2372 runddl32.exe 90 PID 2372 wrote to memory of 4968 2372 runddl32.exe 90 PID 2372 wrote to memory of 4968 2372 runddl32.exe 90 PID 2372 wrote to memory of 4968 2372 runddl32.exe 90 PID 2372 wrote to memory of 4968 2372 runddl32.exe 90 PID 2372 wrote to memory of 4968 2372 runddl32.exe 90 PID 2372 wrote to memory of 4968 2372 runddl32.exe 90 PID 2372 wrote to memory of 4968 2372 runddl32.exe 90 PID 2372 wrote to memory of 4968 2372 runddl32.exe 90 PID 2372 wrote to memory of 4968 2372 runddl32.exe 90 PID 2372 wrote to memory of 4968 2372 runddl32.exe 90 PID 2372 wrote to memory of 4968 2372 runddl32.exe 90 PID 2372 wrote to memory of 4968 2372 runddl32.exe 90 PID 2372 wrote to memory of 4968 2372 runddl32.exe 90 PID 2372 wrote to memory of 4968 2372 runddl32.exe 90 PID 2372 wrote to memory of 4968 2372 runddl32.exe 90 PID 2372 wrote to memory of 4968 2372 runddl32.exe 90 PID 2372 wrote to memory of 4968 2372 runddl32.exe 90 PID 2372 wrote to memory of 4968 2372 runddl32.exe 90 PID 2372 wrote to memory of 4968 2372 runddl32.exe 90 PID 2372 wrote to memory of 4968 2372 runddl32.exe 90 PID 2372 wrote to memory of 4968 2372 runddl32.exe 90 -
Views/modifies file attributes 1 TTPs 2 IoCs
pid Process 3976 attrib.exe 3496 attrib.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe"C:\Users\Admin\AppData\Local\Temp\6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe"1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1128 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe" +s +h2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1720 -
C:\Windows\SysWOW64\attrib.exeattrib "C:\Users\Admin\AppData\Local\Temp\6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe" +s +h3⤵
- Sets file to hidden
- System Location Discovery: System Language Discovery
- Views/modifies file attributes
PID:3496
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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:2328 -
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:3976
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C:\Users\Admin\AppData\Local\Temp\MSDCSC\runddl32.exe"C:\Users\Admin\AppData\Local\Temp\MSDCSC\runddl32.exe"2⤵
- Executes dropped EXE
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2372 -
C:\Windows\SysWOW64\notepad.exenotepad3⤵
- System Location Discovery: System Language Discovery
PID:4968
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Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Privilege Escalation
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Defense Evasion
Hide Artifacts
2Hidden Files and Directories
2Modify Registry
2Replay Monitor
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Downloads
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Filesize
658KB
MD5f6351da84168d40fae8da0c156fbab0f
SHA11a2283c85bc5c655f5f2f77f27ec3a9412e8db7e
SHA2566d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363
SHA5129948e83f004bb6d0edf14626660365e469dec444128e820f82066e73177f5de109d048fe226a9cbe95cfc6a99a9d4c501ab3f3900aa2e3677434f03d52694607