Analysis
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max time kernel
150s -
max time network
155s -
platform
windows10-2004_x64 -
resource
win10v2004-20220901-en -
resource tags
arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system -
submitted
11/10/2022, 06:15
Static task
static1
Behavioral task
behavioral1
Sample
fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe
Resource
win10v2004-20220901-en
General
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Target
fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe
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Size
824KB
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MD5
60be5a06e0c4b00ba862f92c7e2b0a45
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SHA1
4a4b2ea657429c71f83aeb054b0c91ef73a6fa80
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SHA256
fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e
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SHA512
9f4706ee20226ec48b997ed8beaad277a05045fcfb8ace9c25f49b4c71e7fe8cfa2335af93258c0f6c1028622a53ccfe237a3dcf4e2f3d0bf00f712cecea787a
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SSDEEP
24576:QpTFaFoXBnpw8bzRhObDkvEbSDKC2UmKaHZp4m:QpTFuYBny0zD0DkvG8mKQCm
Malware Config
Extracted
darkcomet
Online
nomsrat.sytes.net:200
nomsrat.sytes.net:1064
DC_MUTEX-TGE5TU1
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InstallPath
MSDCSC\msdcsc.exe
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gencode
GV9ZvrdZAjNP
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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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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\\msdcsc.exe" fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe -
Executes dropped EXE 2 IoCs
pid Process 3380 msdcsc.exe 3192 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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe" msdcsc.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe" fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 920 set thread context of 4492 920 fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe 82 PID 3380 set thread context of 3192 3380 msdcsc.exe 86 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\ fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3192 msdcsc.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeIncreaseQuotaPrivilege 4492 fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe Token: SeSecurityPrivilege 4492 fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe Token: SeTakeOwnershipPrivilege 4492 fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe Token: SeLoadDriverPrivilege 4492 fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe Token: SeSystemProfilePrivilege 4492 fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe Token: SeSystemtimePrivilege 4492 fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe Token: SeProfSingleProcessPrivilege 4492 fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe Token: SeIncBasePriorityPrivilege 4492 fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe Token: SeCreatePagefilePrivilege 4492 fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe Token: SeBackupPrivilege 4492 fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe Token: SeRestorePrivilege 4492 fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe Token: SeShutdownPrivilege 4492 fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe Token: SeDebugPrivilege 4492 fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe Token: SeSystemEnvironmentPrivilege 4492 fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe Token: SeChangeNotifyPrivilege 4492 fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe Token: SeRemoteShutdownPrivilege 4492 fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe Token: SeUndockPrivilege 4492 fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe Token: SeManageVolumePrivilege 4492 fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe Token: SeImpersonatePrivilege 4492 fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe Token: SeCreateGlobalPrivilege 4492 fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe Token: 33 4492 fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe Token: 34 4492 fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe Token: 35 4492 fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe Token: 36 4492 fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe Token: SeIncreaseQuotaPrivilege 3192 msdcsc.exe Token: SeSecurityPrivilege 3192 msdcsc.exe Token: SeTakeOwnershipPrivilege 3192 msdcsc.exe Token: SeLoadDriverPrivilege 3192 msdcsc.exe Token: SeSystemProfilePrivilege 3192 msdcsc.exe Token: SeSystemtimePrivilege 3192 msdcsc.exe Token: SeProfSingleProcessPrivilege 3192 msdcsc.exe Token: SeIncBasePriorityPrivilege 3192 msdcsc.exe Token: SeCreatePagefilePrivilege 3192 msdcsc.exe Token: SeBackupPrivilege 3192 msdcsc.exe Token: SeRestorePrivilege 3192 msdcsc.exe Token: SeShutdownPrivilege 3192 msdcsc.exe Token: SeDebugPrivilege 3192 msdcsc.exe Token: SeSystemEnvironmentPrivilege 3192 msdcsc.exe Token: SeChangeNotifyPrivilege 3192 msdcsc.exe Token: SeRemoteShutdownPrivilege 3192 msdcsc.exe Token: SeUndockPrivilege 3192 msdcsc.exe Token: SeManageVolumePrivilege 3192 msdcsc.exe Token: SeImpersonatePrivilege 3192 msdcsc.exe Token: SeCreateGlobalPrivilege 3192 msdcsc.exe Token: 33 3192 msdcsc.exe Token: 34 3192 msdcsc.exe Token: 35 3192 msdcsc.exe Token: 36 3192 msdcsc.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 3192 msdcsc.exe -
Suspicious use of WriteProcessMemory 51 IoCs
description pid Process procid_target PID 920 wrote to memory of 4492 920 fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe 82 PID 920 wrote to memory of 4492 920 fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe 82 PID 920 wrote to memory of 4492 920 fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe 82 PID 920 wrote to memory of 4492 920 fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe 82 PID 920 wrote to memory of 4492 920 fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe 82 PID 920 wrote to memory of 4492 920 fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe 82 PID 920 wrote to memory of 4492 920 fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe 82 PID 920 wrote to memory of 4492 920 fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe 82 PID 920 wrote to memory of 4492 920 fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe 82 PID 920 wrote to memory of 4492 920 fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe 82 PID 920 wrote to memory of 4492 920 fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe 82 PID 920 wrote to memory of 4492 920 fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe 82 PID 920 wrote to memory of 4492 920 fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe 82 PID 4492 wrote to memory of 3380 4492 fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe 83 PID 4492 wrote to memory of 3380 4492 fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe 83 PID 4492 wrote to memory of 3380 4492 fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe 83 PID 3380 wrote to memory of 3192 3380 msdcsc.exe 86 PID 3380 wrote to memory of 3192 3380 msdcsc.exe 86 PID 3380 wrote to memory of 3192 3380 msdcsc.exe 86 PID 3380 wrote to memory of 3192 3380 msdcsc.exe 86 PID 3380 wrote to memory of 3192 3380 msdcsc.exe 86 PID 3380 wrote to memory of 3192 3380 msdcsc.exe 86 PID 3380 wrote to memory of 3192 3380 msdcsc.exe 86 PID 3380 wrote to memory of 3192 3380 msdcsc.exe 86 PID 3380 wrote to memory of 3192 3380 msdcsc.exe 86 PID 3380 wrote to memory of 3192 3380 msdcsc.exe 86 PID 3380 wrote to memory of 3192 3380 msdcsc.exe 86 PID 3380 wrote to memory of 3192 3380 msdcsc.exe 86 PID 3380 wrote to memory of 3192 3380 msdcsc.exe 86 PID 3192 wrote to memory of 3504 3192 msdcsc.exe 87 PID 3192 wrote to memory of 3504 3192 msdcsc.exe 87 PID 3192 wrote to memory of 3504 3192 msdcsc.exe 87 PID 3192 wrote to memory of 3504 3192 msdcsc.exe 87 PID 3192 wrote to memory of 3504 3192 msdcsc.exe 87 PID 3192 wrote to memory of 3504 3192 msdcsc.exe 87 PID 3192 wrote to memory of 3504 3192 msdcsc.exe 87 PID 3192 wrote to memory of 3504 3192 msdcsc.exe 87 PID 3192 wrote to memory of 3504 3192 msdcsc.exe 87 PID 3192 wrote to memory of 3504 3192 msdcsc.exe 87 PID 3192 wrote to memory of 3504 3192 msdcsc.exe 87 PID 3192 wrote to memory of 3504 3192 msdcsc.exe 87 PID 3192 wrote to memory of 3504 3192 msdcsc.exe 87 PID 3192 wrote to memory of 3504 3192 msdcsc.exe 87 PID 3192 wrote to memory of 3504 3192 msdcsc.exe 87 PID 3192 wrote to memory of 3504 3192 msdcsc.exe 87 PID 3192 wrote to memory of 3504 3192 msdcsc.exe 87 PID 3192 wrote to memory of 3504 3192 msdcsc.exe 87 PID 3192 wrote to memory of 3504 3192 msdcsc.exe 87 PID 3192 wrote to memory of 3504 3192 msdcsc.exe 87 PID 3192 wrote to memory of 3504 3192 msdcsc.exe 87 PID 3192 wrote to memory of 3504 3192 msdcsc.exe 87
Processes
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C:\Users\Admin\AppData\Local\Temp\fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe"C:\Users\Admin\AppData\Local\Temp\fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:920 -
C:\Users\Admin\AppData\Local\Temp\fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exeC:\Users\Admin\AppData\Local\Temp\fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe2⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4492 -
C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3380 -
C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exeC:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe4⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3192 -
C:\Windows\SysWOW64\notepad.exenotepad5⤵PID:3504
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
824KB
MD560be5a06e0c4b00ba862f92c7e2b0a45
SHA14a4b2ea657429c71f83aeb054b0c91ef73a6fa80
SHA256fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e
SHA5129f4706ee20226ec48b997ed8beaad277a05045fcfb8ace9c25f49b4c71e7fe8cfa2335af93258c0f6c1028622a53ccfe237a3dcf4e2f3d0bf00f712cecea787a
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Filesize
824KB
MD560be5a06e0c4b00ba862f92c7e2b0a45
SHA14a4b2ea657429c71f83aeb054b0c91ef73a6fa80
SHA256fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e
SHA5129f4706ee20226ec48b997ed8beaad277a05045fcfb8ace9c25f49b4c71e7fe8cfa2335af93258c0f6c1028622a53ccfe237a3dcf4e2f3d0bf00f712cecea787a
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Filesize
824KB
MD560be5a06e0c4b00ba862f92c7e2b0a45
SHA14a4b2ea657429c71f83aeb054b0c91ef73a6fa80
SHA256fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e
SHA5129f4706ee20226ec48b997ed8beaad277a05045fcfb8ace9c25f49b4c71e7fe8cfa2335af93258c0f6c1028622a53ccfe237a3dcf4e2f3d0bf00f712cecea787a