Analysis
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max time kernel
141s -
max time network
123s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
03-04-2024 12:14
Behavioral task
behavioral1
Sample
vpn-sg.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
vpn-sg.exe
Resource
win10v2004-20240226-en
General
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Target
vpn-sg.exe
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Size
756KB
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MD5
46312df6c5ddc1f1c31051b7a6ccd792
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SHA1
0cd971f850841246463b7ebd6fafa8090b443bd4
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SHA256
d484e27c6aa0cfd3f3be41616901d5eaded7ab35632035a22f94538981f403a9
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SHA512
b227329c43de53577af461c93aa7af27932457ad21eaa13e4ff53a0a5c6e2c4f99e12e5d0e8767d58e105e8cf619dfde28075995f32653b3e5cf54fd1fbfac6f
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SSDEEP
12288:F9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/h+:PZ1xuVVjfFoynPaVBUR8f+kN10EBI
Malware Config
Extracted
darkcomet
Guest16
45.61.152.61:1604
DC_MUTEX-75H671P
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InstallPath
MSDCSC\msdcsc.exe
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gencode
rvR4QwZQ1qCt
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install
true
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offline_keylogger
true
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persistence
false
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reg_key
MicroUpdate
Signatures
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Modifies WinLogon for persistence 2 TTPs 1 IoCs
Processes:
vpn-sg.exedescription 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" vpn-sg.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
vpn-sg.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation vpn-sg.exe -
Executes dropped EXE 1 IoCs
Processes:
msdcsc.exepid process 1452 msdcsc.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
vpn-sg.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe" vpn-sg.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of AdjustPrivilegeToken 48 IoCs
Processes:
vpn-sg.exemsdcsc.exedescription pid process Token: SeIncreaseQuotaPrivilege 3060 vpn-sg.exe Token: SeSecurityPrivilege 3060 vpn-sg.exe Token: SeTakeOwnershipPrivilege 3060 vpn-sg.exe Token: SeLoadDriverPrivilege 3060 vpn-sg.exe Token: SeSystemProfilePrivilege 3060 vpn-sg.exe Token: SeSystemtimePrivilege 3060 vpn-sg.exe Token: SeProfSingleProcessPrivilege 3060 vpn-sg.exe Token: SeIncBasePriorityPrivilege 3060 vpn-sg.exe Token: SeCreatePagefilePrivilege 3060 vpn-sg.exe Token: SeBackupPrivilege 3060 vpn-sg.exe Token: SeRestorePrivilege 3060 vpn-sg.exe Token: SeShutdownPrivilege 3060 vpn-sg.exe Token: SeDebugPrivilege 3060 vpn-sg.exe Token: SeSystemEnvironmentPrivilege 3060 vpn-sg.exe Token: SeChangeNotifyPrivilege 3060 vpn-sg.exe Token: SeRemoteShutdownPrivilege 3060 vpn-sg.exe Token: SeUndockPrivilege 3060 vpn-sg.exe Token: SeManageVolumePrivilege 3060 vpn-sg.exe Token: SeImpersonatePrivilege 3060 vpn-sg.exe Token: SeCreateGlobalPrivilege 3060 vpn-sg.exe Token: 33 3060 vpn-sg.exe Token: 34 3060 vpn-sg.exe Token: 35 3060 vpn-sg.exe Token: 36 3060 vpn-sg.exe Token: SeIncreaseQuotaPrivilege 1452 msdcsc.exe Token: SeSecurityPrivilege 1452 msdcsc.exe Token: SeTakeOwnershipPrivilege 1452 msdcsc.exe Token: SeLoadDriverPrivilege 1452 msdcsc.exe Token: SeSystemProfilePrivilege 1452 msdcsc.exe Token: SeSystemtimePrivilege 1452 msdcsc.exe Token: SeProfSingleProcessPrivilege 1452 msdcsc.exe Token: SeIncBasePriorityPrivilege 1452 msdcsc.exe Token: SeCreatePagefilePrivilege 1452 msdcsc.exe Token: SeBackupPrivilege 1452 msdcsc.exe Token: SeRestorePrivilege 1452 msdcsc.exe Token: SeShutdownPrivilege 1452 msdcsc.exe Token: SeDebugPrivilege 1452 msdcsc.exe Token: SeSystemEnvironmentPrivilege 1452 msdcsc.exe Token: SeChangeNotifyPrivilege 1452 msdcsc.exe Token: SeRemoteShutdownPrivilege 1452 msdcsc.exe Token: SeUndockPrivilege 1452 msdcsc.exe Token: SeManageVolumePrivilege 1452 msdcsc.exe Token: SeImpersonatePrivilege 1452 msdcsc.exe Token: SeCreateGlobalPrivilege 1452 msdcsc.exe Token: 33 1452 msdcsc.exe Token: 34 1452 msdcsc.exe Token: 35 1452 msdcsc.exe Token: 36 1452 msdcsc.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
msdcsc.exepid process 1452 msdcsc.exe -
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
vpn-sg.exedescription pid process target process PID 3060 wrote to memory of 1452 3060 vpn-sg.exe msdcsc.exe PID 3060 wrote to memory of 1452 3060 vpn-sg.exe msdcsc.exe PID 3060 wrote to memory of 1452 3060 vpn-sg.exe msdcsc.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\vpn-sg.exe"C:\Users\Admin\AppData\Local\Temp\vpn-sg.exe"1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3060 -
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:1452
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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C:\Users\Admin\Documents\MSDCSC\msdcsc.exeFilesize
756KB
MD546312df6c5ddc1f1c31051b7a6ccd792
SHA10cd971f850841246463b7ebd6fafa8090b443bd4
SHA256d484e27c6aa0cfd3f3be41616901d5eaded7ab35632035a22f94538981f403a9
SHA512b227329c43de53577af461c93aa7af27932457ad21eaa13e4ff53a0a5c6e2c4f99e12e5d0e8767d58e105e8cf619dfde28075995f32653b3e5cf54fd1fbfac6f
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memory/1452-13-0x0000000002180000-0x0000000002181000-memory.dmpFilesize
4KB
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memory/1452-15-0x0000000000400000-0x00000000004CA000-memory.dmpFilesize
808KB
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memory/3060-0-0x0000000002500000-0x0000000002501000-memory.dmpFilesize
4KB
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memory/3060-14-0x0000000000400000-0x00000000004CA000-memory.dmpFilesize
808KB