Analysis
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max time kernel
171s -
max time network
181s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
27/11/2022, 18:26
Behavioral task
behavioral1
Sample
9b6508c6fa4a187143b4353979264952d3a34f45c606a0c0762fd81606ea2ef2.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
9b6508c6fa4a187143b4353979264952d3a34f45c606a0c0762fd81606ea2ef2.exe
Resource
win10v2004-20220812-en
General
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Target
9b6508c6fa4a187143b4353979264952d3a34f45c606a0c0762fd81606ea2ef2.exe
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Size
658KB
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MD5
47d14a00e96b909092742039cd736413
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SHA1
0cb7e7db02f0444a991b0f5208341a1a4999cf37
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SHA256
9b6508c6fa4a187143b4353979264952d3a34f45c606a0c0762fd81606ea2ef2
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SHA512
fa8f33e2e0a34454223392709452906f9829830cebc1f18cafb49641c757f4367622e5525ef4bd86d5785751029627cb67895bf5fe3da867bd79a1666ae49c8b
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SSDEEP
12288:y9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/hu:eZ1xuVVjfFoynPaVBUR8f+kN10EBk
Malware Config
Extracted
darkcomet
Guest16
barry101.ddns.net:1604
DC_MUTEX-W1A5DPE
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InstallPath
MSDCSC\msdcsc.exe
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gencode
dXnKbhdJfySs
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install
true
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offline_keylogger
true
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password
abido
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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
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" 9b6508c6fa4a187143b4353979264952d3a34f45c606a0c0762fd81606ea2ef2.exe -
Executes dropped EXE 1 IoCs
pid Process 4864 msdcsc.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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation 9b6508c6fa4a187143b4353979264952d3a34f45c606a0c0762fd81606ea2ef2.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe" 9b6508c6fa4a187143b4353979264952d3a34f45c606a0c0762fd81606ea2ef2.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeIncreaseQuotaPrivilege 4948 9b6508c6fa4a187143b4353979264952d3a34f45c606a0c0762fd81606ea2ef2.exe Token: SeSecurityPrivilege 4948 9b6508c6fa4a187143b4353979264952d3a34f45c606a0c0762fd81606ea2ef2.exe Token: SeTakeOwnershipPrivilege 4948 9b6508c6fa4a187143b4353979264952d3a34f45c606a0c0762fd81606ea2ef2.exe Token: SeLoadDriverPrivilege 4948 9b6508c6fa4a187143b4353979264952d3a34f45c606a0c0762fd81606ea2ef2.exe Token: SeSystemProfilePrivilege 4948 9b6508c6fa4a187143b4353979264952d3a34f45c606a0c0762fd81606ea2ef2.exe Token: SeSystemtimePrivilege 4948 9b6508c6fa4a187143b4353979264952d3a34f45c606a0c0762fd81606ea2ef2.exe Token: SeProfSingleProcessPrivilege 4948 9b6508c6fa4a187143b4353979264952d3a34f45c606a0c0762fd81606ea2ef2.exe Token: SeIncBasePriorityPrivilege 4948 9b6508c6fa4a187143b4353979264952d3a34f45c606a0c0762fd81606ea2ef2.exe Token: SeCreatePagefilePrivilege 4948 9b6508c6fa4a187143b4353979264952d3a34f45c606a0c0762fd81606ea2ef2.exe Token: SeBackupPrivilege 4948 9b6508c6fa4a187143b4353979264952d3a34f45c606a0c0762fd81606ea2ef2.exe Token: SeRestorePrivilege 4948 9b6508c6fa4a187143b4353979264952d3a34f45c606a0c0762fd81606ea2ef2.exe Token: SeShutdownPrivilege 4948 9b6508c6fa4a187143b4353979264952d3a34f45c606a0c0762fd81606ea2ef2.exe Token: SeDebugPrivilege 4948 9b6508c6fa4a187143b4353979264952d3a34f45c606a0c0762fd81606ea2ef2.exe Token: SeSystemEnvironmentPrivilege 4948 9b6508c6fa4a187143b4353979264952d3a34f45c606a0c0762fd81606ea2ef2.exe Token: SeChangeNotifyPrivilege 4948 9b6508c6fa4a187143b4353979264952d3a34f45c606a0c0762fd81606ea2ef2.exe Token: SeRemoteShutdownPrivilege 4948 9b6508c6fa4a187143b4353979264952d3a34f45c606a0c0762fd81606ea2ef2.exe Token: SeUndockPrivilege 4948 9b6508c6fa4a187143b4353979264952d3a34f45c606a0c0762fd81606ea2ef2.exe Token: SeManageVolumePrivilege 4948 9b6508c6fa4a187143b4353979264952d3a34f45c606a0c0762fd81606ea2ef2.exe Token: SeImpersonatePrivilege 4948 9b6508c6fa4a187143b4353979264952d3a34f45c606a0c0762fd81606ea2ef2.exe Token: SeCreateGlobalPrivilege 4948 9b6508c6fa4a187143b4353979264952d3a34f45c606a0c0762fd81606ea2ef2.exe Token: 33 4948 9b6508c6fa4a187143b4353979264952d3a34f45c606a0c0762fd81606ea2ef2.exe Token: 34 4948 9b6508c6fa4a187143b4353979264952d3a34f45c606a0c0762fd81606ea2ef2.exe Token: 35 4948 9b6508c6fa4a187143b4353979264952d3a34f45c606a0c0762fd81606ea2ef2.exe Token: 36 4948 9b6508c6fa4a187143b4353979264952d3a34f45c606a0c0762fd81606ea2ef2.exe Token: SeIncreaseQuotaPrivilege 4864 msdcsc.exe Token: SeSecurityPrivilege 4864 msdcsc.exe Token: SeTakeOwnershipPrivilege 4864 msdcsc.exe Token: SeLoadDriverPrivilege 4864 msdcsc.exe Token: SeSystemProfilePrivilege 4864 msdcsc.exe Token: SeSystemtimePrivilege 4864 msdcsc.exe Token: SeProfSingleProcessPrivilege 4864 msdcsc.exe Token: SeIncBasePriorityPrivilege 4864 msdcsc.exe Token: SeCreatePagefilePrivilege 4864 msdcsc.exe Token: SeBackupPrivilege 4864 msdcsc.exe Token: SeRestorePrivilege 4864 msdcsc.exe Token: SeShutdownPrivilege 4864 msdcsc.exe Token: SeDebugPrivilege 4864 msdcsc.exe Token: SeSystemEnvironmentPrivilege 4864 msdcsc.exe Token: SeChangeNotifyPrivilege 4864 msdcsc.exe Token: SeRemoteShutdownPrivilege 4864 msdcsc.exe Token: SeUndockPrivilege 4864 msdcsc.exe Token: SeManageVolumePrivilege 4864 msdcsc.exe Token: SeImpersonatePrivilege 4864 msdcsc.exe Token: SeCreateGlobalPrivilege 4864 msdcsc.exe Token: 33 4864 msdcsc.exe Token: 34 4864 msdcsc.exe Token: 35 4864 msdcsc.exe Token: 36 4864 msdcsc.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 4864 msdcsc.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4948 wrote to memory of 4864 4948 9b6508c6fa4a187143b4353979264952d3a34f45c606a0c0762fd81606ea2ef2.exe 81 PID 4948 wrote to memory of 4864 4948 9b6508c6fa4a187143b4353979264952d3a34f45c606a0c0762fd81606ea2ef2.exe 81 PID 4948 wrote to memory of 4864 4948 9b6508c6fa4a187143b4353979264952d3a34f45c606a0c0762fd81606ea2ef2.exe 81
Processes
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C:\Users\Admin\AppData\Local\Temp\9b6508c6fa4a187143b4353979264952d3a34f45c606a0c0762fd81606ea2ef2.exe"C:\Users\Admin\AppData\Local\Temp\9b6508c6fa4a187143b4353979264952d3a34f45c606a0c0762fd81606ea2ef2.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:4948 -
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:4864
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
-
Filesize
658KB
MD547d14a00e96b909092742039cd736413
SHA10cb7e7db02f0444a991b0f5208341a1a4999cf37
SHA2569b6508c6fa4a187143b4353979264952d3a34f45c606a0c0762fd81606ea2ef2
SHA512fa8f33e2e0a34454223392709452906f9829830cebc1f18cafb49641c757f4367622e5525ef4bd86d5785751029627cb67895bf5fe3da867bd79a1666ae49c8b
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Filesize
658KB
MD547d14a00e96b909092742039cd736413
SHA10cb7e7db02f0444a991b0f5208341a1a4999cf37
SHA2569b6508c6fa4a187143b4353979264952d3a34f45c606a0c0762fd81606ea2ef2
SHA512fa8f33e2e0a34454223392709452906f9829830cebc1f18cafb49641c757f4367622e5525ef4bd86d5785751029627cb67895bf5fe3da867bd79a1666ae49c8b