Analysis
- max time kernel
150s - max time network
152s - platform
windows10_x64 - resource
win10v20210408 - submitted
04/05/2021, 20:07
Static task
static1
Behavioral task
behavioral1
Sample
8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe
Resource
win7v20210410
windows7_x64
0 signatures
0 seconds
General
- Target 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe
- Size 658KB
- Sample210504-lek34f3f5j
- SHA256 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1
- MD5 ed648fd6199693419b348bde3477c6b8
- SHA1 289b13ef04fe88efb0cc9131c183d924dcfe1c75
- SHA512 461be60ece2bc57899fd6c9f4f57dcf3d51488f43782a3637fa0deca6140610a5d8b4d133c8253d23824fc7bd1941e605d3c20b266394e1763a6d35785e98fea
- MD5 SHA1 SHA512
Malware Config
Extracted
Family
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darkcomet
Botnet
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all
C2
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127.0.0.1:1604
Mutex
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DC_MUTEX-TXHMS77
Attributes
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InstallPath
MSDCSC\msdcsc.exe
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gencode
8Z63PmylbyiK
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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
- 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" 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe - Executes dropped EXE 1 IoCs
pid Process 3172 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-1-5-21-1594587808-2047097707-2163810515-1000\Control Panel\International\Geo\Nation 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe - Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe" 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe Set value (str) \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe" msdcsc.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3172 msdcsc.exe - Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeIncreaseQuotaPrivilege 1404 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe Token: SeSecurityPrivilege 1404 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe Token: SeTakeOwnershipPrivilege 1404 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe Token: SeLoadDriverPrivilege 1404 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe Token: SeSystemProfilePrivilege 1404 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe Token: SeSystemtimePrivilege 1404 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe Token: SeProfSingleProcessPrivilege 1404 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe Token: SeIncBasePriorityPrivilege 1404 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe Token: SeCreatePagefilePrivilege 1404 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe Token: SeBackupPrivilege 1404 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe Token: SeRestorePrivilege 1404 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe Token: SeShutdownPrivilege 1404 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe Token: SeDebugPrivilege 1404 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe Token: SeSystemEnvironmentPrivilege 1404 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe Token: SeChangeNotifyPrivilege 1404 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe Token: SeRemoteShutdownPrivilege 1404 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe Token: SeUndockPrivilege 1404 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe Token: SeManageVolumePrivilege 1404 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe Token: SeImpersonatePrivilege 1404 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe Token: SeCreateGlobalPrivilege 1404 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe Token: 33 1404 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe Token: 34 1404 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe Token: 35 1404 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe Token: 36 1404 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe Token: SeIncreaseQuotaPrivilege 3172 msdcsc.exe Token: SeSecurityPrivilege 3172 msdcsc.exe Token: SeTakeOwnershipPrivilege 3172 msdcsc.exe Token: SeLoadDriverPrivilege 3172 msdcsc.exe Token: SeSystemProfilePrivilege 3172 msdcsc.exe Token: SeSystemtimePrivilege 3172 msdcsc.exe Token: SeProfSingleProcessPrivilege 3172 msdcsc.exe Token: SeIncBasePriorityPrivilege 3172 msdcsc.exe Token: SeCreatePagefilePrivilege 3172 msdcsc.exe Token: SeBackupPrivilege 3172 msdcsc.exe Token: SeRestorePrivilege 3172 msdcsc.exe Token: SeShutdownPrivilege 3172 msdcsc.exe Token: SeDebugPrivilege 3172 msdcsc.exe Token: SeSystemEnvironmentPrivilege 3172 msdcsc.exe Token: SeChangeNotifyPrivilege 3172 msdcsc.exe Token: SeRemoteShutdownPrivilege 3172 msdcsc.exe Token: SeUndockPrivilege 3172 msdcsc.exe Token: SeManageVolumePrivilege 3172 msdcsc.exe Token: SeImpersonatePrivilege 3172 msdcsc.exe Token: SeCreateGlobalPrivilege 3172 msdcsc.exe Token: 33 3172 msdcsc.exe Token: 34 3172 msdcsc.exe Token: 35 3172 msdcsc.exe Token: 36 3172 msdcsc.exe - Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 3172 msdcsc.exe - Suspicious use of WriteProcessMemory 37 IoCs
description pid Process procid_target PID 1404 wrote to memory of 920 1404 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe 75 PID 1404 wrote to memory of 920 1404 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe 75 PID 1404 wrote to memory of 920 1404 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe 75 PID 1404 wrote to memory of 2952 1404 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe 76 PID 1404 wrote to memory of 2952 1404 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe 76 PID 1404 wrote to memory of 2952 1404 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe 76 PID 920 wrote to memory of 604 920 cmd.exe 80 PID 920 wrote to memory of 604 920 cmd.exe 80 PID 920 wrote to memory of 604 920 cmd.exe 80 PID 2952 wrote to memory of 3192 2952 cmd.exe 79 PID 2952 wrote to memory of 3192 2952 cmd.exe 79 PID 2952 wrote to memory of 3192 2952 cmd.exe 79 PID 1404 wrote to memory of 3172 1404 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe 81 PID 1404 wrote to memory of 3172 1404 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe 81 PID 1404 wrote to memory of 3172 1404 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe 81 PID 3172 wrote to memory of 2288 3172 msdcsc.exe 82 PID 3172 wrote to memory of 2288 3172 msdcsc.exe 82 PID 3172 wrote to memory of 2288 3172 msdcsc.exe 82 PID 3172 wrote to memory of 2288 3172 msdcsc.exe 82 PID 3172 wrote to memory of 2288 3172 msdcsc.exe 82 PID 3172 wrote to memory of 2288 3172 msdcsc.exe 82 PID 3172 wrote to memory of 2288 3172 msdcsc.exe 82 PID 3172 wrote to memory of 2288 3172 msdcsc.exe 82 PID 3172 wrote to memory of 2288 3172 msdcsc.exe 82 PID 3172 wrote to memory of 2288 3172 msdcsc.exe 82 PID 3172 wrote to memory of 2288 3172 msdcsc.exe 82 PID 3172 wrote to memory of 2288 3172 msdcsc.exe 82 PID 3172 wrote to memory of 2288 3172 msdcsc.exe 82 PID 3172 wrote to memory of 2288 3172 msdcsc.exe 82 PID 3172 wrote to memory of 2288 3172 msdcsc.exe 82 PID 3172 wrote to memory of 2288 3172 msdcsc.exe 82 PID 3172 wrote to memory of 2288 3172 msdcsc.exe 82 PID 3172 wrote to memory of 2288 3172 msdcsc.exe 82 PID 3172 wrote to memory of 2288 3172 msdcsc.exe 82 PID 3172 wrote to memory of 2288 3172 msdcsc.exe 82 PID 3172 wrote to memory of 2288 3172 msdcsc.exe 82 PID 3172 wrote to memory of 2288 3172 msdcsc.exe 82 - Views/modifies file attributes 1 TTPs 2 IoCs
pid Process 3192 attrib.exe 604 attrib.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe"C:\Users\Admin\AppData\Local\Temp\8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe"1⤵
- 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:1404 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe" +s +h2⤵
- Suspicious use of WriteProcessMemory
PID:920 -
C:\Windows\SysWOW64\attrib.exeattrib "C:\Users\Admin\AppData\Local\Temp\8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe" +s +h3⤵
- Views/modifies file attributes
PID:604
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h2⤵
- Suspicious use of WriteProcessMemory
PID:2952 -
C:\Windows\SysWOW64\attrib.exeattrib "C:\Users\Admin\AppData\Local\Temp" +s +h3⤵
- Views/modifies file attributes
PID:3192
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C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"2⤵
- 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:3172 -
C:\Windows\SysWOW64\notepad.exenotepad3⤵PID:2288
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