Analysis
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max time kernel
151s -
max time network
118s -
platform
windows7_x64 -
resource
win7v20210410 -
submitted
04-05-2021 20:07
Behavioral task
behavioral1
Sample
8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe
Resource
win7v20210410
General
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Target
8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe
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Size
658KB
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MD5
ed648fd6199693419b348bde3477c6b8
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SHA1
289b13ef04fe88efb0cc9131c183d924dcfe1c75
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SHA256
8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1
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SHA512
461be60ece2bc57899fd6c9f4f57dcf3d51488f43782a3637fa0deca6140610a5d8b4d133c8253d23824fc7bd1941e605d3c20b266394e1763a6d35785e98fea
Malware Config
Extracted
darkcomet
all
127.0.0.1:1604
DC_MUTEX-TXHMS77
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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
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Modifies WinLogon for persistence 2 TTPs 1 IoCs
Processes:
8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exedescription 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
Processes:
msdcsc.exepid process 1708 msdcsc.exe -
Loads dropped DLL 2 IoCs
Processes:
8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exepid process 1092 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe 1092 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exemsdcsc.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe" 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe Set value (str) \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\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.
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Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
msdcsc.exepid process 1708 msdcsc.exe -
Suspicious use of AdjustPrivilegeToken 46 IoCs
Processes:
8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exemsdcsc.exedescription pid process Token: SeIncreaseQuotaPrivilege 1092 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe Token: SeSecurityPrivilege 1092 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe Token: SeTakeOwnershipPrivilege 1092 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe Token: SeLoadDriverPrivilege 1092 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe Token: SeSystemProfilePrivilege 1092 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe Token: SeSystemtimePrivilege 1092 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe Token: SeProfSingleProcessPrivilege 1092 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe Token: SeIncBasePriorityPrivilege 1092 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe Token: SeCreatePagefilePrivilege 1092 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe Token: SeBackupPrivilege 1092 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe Token: SeRestorePrivilege 1092 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe Token: SeShutdownPrivilege 1092 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe Token: SeDebugPrivilege 1092 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe Token: SeSystemEnvironmentPrivilege 1092 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe Token: SeChangeNotifyPrivilege 1092 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe Token: SeRemoteShutdownPrivilege 1092 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe Token: SeUndockPrivilege 1092 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe Token: SeManageVolumePrivilege 1092 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe Token: SeImpersonatePrivilege 1092 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe Token: SeCreateGlobalPrivilege 1092 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe Token: 33 1092 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe Token: 34 1092 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe Token: 35 1092 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe Token: SeIncreaseQuotaPrivilege 1708 msdcsc.exe Token: SeSecurityPrivilege 1708 msdcsc.exe Token: SeTakeOwnershipPrivilege 1708 msdcsc.exe Token: SeLoadDriverPrivilege 1708 msdcsc.exe Token: SeSystemProfilePrivilege 1708 msdcsc.exe Token: SeSystemtimePrivilege 1708 msdcsc.exe Token: SeProfSingleProcessPrivilege 1708 msdcsc.exe Token: SeIncBasePriorityPrivilege 1708 msdcsc.exe Token: SeCreatePagefilePrivilege 1708 msdcsc.exe Token: SeBackupPrivilege 1708 msdcsc.exe Token: SeRestorePrivilege 1708 msdcsc.exe Token: SeShutdownPrivilege 1708 msdcsc.exe Token: SeDebugPrivilege 1708 msdcsc.exe Token: SeSystemEnvironmentPrivilege 1708 msdcsc.exe Token: SeChangeNotifyPrivilege 1708 msdcsc.exe Token: SeRemoteShutdownPrivilege 1708 msdcsc.exe Token: SeUndockPrivilege 1708 msdcsc.exe Token: SeManageVolumePrivilege 1708 msdcsc.exe Token: SeImpersonatePrivilege 1708 msdcsc.exe Token: SeCreateGlobalPrivilege 1708 msdcsc.exe Token: 33 1708 msdcsc.exe Token: 34 1708 msdcsc.exe Token: 35 1708 msdcsc.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
msdcsc.exepid process 1708 msdcsc.exe -
Suspicious use of WriteProcessMemory 43 IoCs
Processes:
8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.execmd.execmd.exemsdcsc.exedescription pid process target process PID 1092 wrote to memory of 1292 1092 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe cmd.exe PID 1092 wrote to memory of 1292 1092 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe cmd.exe PID 1092 wrote to memory of 1292 1092 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe cmd.exe PID 1092 wrote to memory of 1292 1092 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe cmd.exe PID 1092 wrote to memory of 1984 1092 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe cmd.exe PID 1092 wrote to memory of 1984 1092 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe cmd.exe PID 1092 wrote to memory of 1984 1092 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe cmd.exe PID 1092 wrote to memory of 1984 1092 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe cmd.exe PID 1984 wrote to memory of 1716 1984 cmd.exe attrib.exe PID 1984 wrote to memory of 1716 1984 cmd.exe attrib.exe PID 1984 wrote to memory of 1716 1984 cmd.exe attrib.exe PID 1984 wrote to memory of 1716 1984 cmd.exe attrib.exe PID 1292 wrote to memory of 1728 1292 cmd.exe attrib.exe PID 1292 wrote to memory of 1728 1292 cmd.exe attrib.exe PID 1292 wrote to memory of 1728 1292 cmd.exe attrib.exe PID 1292 wrote to memory of 1728 1292 cmd.exe attrib.exe PID 1092 wrote to memory of 1708 1092 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe msdcsc.exe PID 1092 wrote to memory of 1708 1092 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe msdcsc.exe PID 1092 wrote to memory of 1708 1092 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe msdcsc.exe PID 1092 wrote to memory of 1708 1092 8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe msdcsc.exe PID 1708 wrote to memory of 1364 1708 msdcsc.exe notepad.exe PID 1708 wrote to memory of 1364 1708 msdcsc.exe notepad.exe PID 1708 wrote to memory of 1364 1708 msdcsc.exe notepad.exe PID 1708 wrote to memory of 1364 1708 msdcsc.exe notepad.exe PID 1708 wrote to memory of 1364 1708 msdcsc.exe notepad.exe PID 1708 wrote to memory of 1364 1708 msdcsc.exe notepad.exe PID 1708 wrote to memory of 1364 1708 msdcsc.exe notepad.exe PID 1708 wrote to memory of 1364 1708 msdcsc.exe notepad.exe PID 1708 wrote to memory of 1364 1708 msdcsc.exe notepad.exe PID 1708 wrote to memory of 1364 1708 msdcsc.exe notepad.exe PID 1708 wrote to memory of 1364 1708 msdcsc.exe notepad.exe PID 1708 wrote to memory of 1364 1708 msdcsc.exe notepad.exe PID 1708 wrote to memory of 1364 1708 msdcsc.exe notepad.exe PID 1708 wrote to memory of 1364 1708 msdcsc.exe notepad.exe PID 1708 wrote to memory of 1364 1708 msdcsc.exe notepad.exe PID 1708 wrote to memory of 1364 1708 msdcsc.exe notepad.exe PID 1708 wrote to memory of 1364 1708 msdcsc.exe notepad.exe PID 1708 wrote to memory of 1364 1708 msdcsc.exe notepad.exe PID 1708 wrote to memory of 1364 1708 msdcsc.exe notepad.exe PID 1708 wrote to memory of 1364 1708 msdcsc.exe notepad.exe PID 1708 wrote to memory of 1364 1708 msdcsc.exe notepad.exe PID 1708 wrote to memory of 1364 1708 msdcsc.exe notepad.exe PID 1708 wrote to memory of 1364 1708 msdcsc.exe notepad.exe -
Views/modifies file attributes 1 TTPs 2 IoCs
Processes:
attrib.exeattrib.exepid process 1716 attrib.exe 1728 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
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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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
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C:\Windows\SysWOW64\attrib.exeattrib "C:\Users\Admin\AppData\Local\Temp\8ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1.exe" +s +h3⤵
- Views/modifies file attributes
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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
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C:\Windows\SysWOW64\attrib.exeattrib "C:\Users\Admin\AppData\Local\Temp" +s +h3⤵
- Views/modifies file attributes
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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
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C:\Windows\SysWOW64\notepad.exenotepad3⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exeMD5
ed648fd6199693419b348bde3477c6b8
SHA1289b13ef04fe88efb0cc9131c183d924dcfe1c75
SHA2568ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1
SHA512461be60ece2bc57899fd6c9f4f57dcf3d51488f43782a3637fa0deca6140610a5d8b4d133c8253d23824fc7bd1941e605d3c20b266394e1763a6d35785e98fea
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C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exeMD5
ed648fd6199693419b348bde3477c6b8
SHA1289b13ef04fe88efb0cc9131c183d924dcfe1c75
SHA2568ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1
SHA512461be60ece2bc57899fd6c9f4f57dcf3d51488f43782a3637fa0deca6140610a5d8b4d133c8253d23824fc7bd1941e605d3c20b266394e1763a6d35785e98fea
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\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exeMD5
ed648fd6199693419b348bde3477c6b8
SHA1289b13ef04fe88efb0cc9131c183d924dcfe1c75
SHA2568ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1
SHA512461be60ece2bc57899fd6c9f4f57dcf3d51488f43782a3637fa0deca6140610a5d8b4d133c8253d23824fc7bd1941e605d3c20b266394e1763a6d35785e98fea
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\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exeMD5
ed648fd6199693419b348bde3477c6b8
SHA1289b13ef04fe88efb0cc9131c183d924dcfe1c75
SHA2568ee7e2417bc13dfaadd514daa45ce52d9f1838ce47fd7429105117f5b06930f1
SHA512461be60ece2bc57899fd6c9f4f57dcf3d51488f43782a3637fa0deca6140610a5d8b4d133c8253d23824fc7bd1941e605d3c20b266394e1763a6d35785e98fea
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memory/1092-65-0x0000000000240000-0x0000000000241000-memory.dmpFilesize
4KB
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memory/1092-60-0x0000000076E11000-0x0000000076E13000-memory.dmpFilesize
8KB
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memory/1292-61-0x0000000000000000-mapping.dmp
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memory/1364-72-0x0000000000000000-mapping.dmp
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memory/1364-75-0x0000000000220000-0x0000000000221000-memory.dmpFilesize
4KB
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memory/1708-68-0x0000000000000000-mapping.dmp
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memory/1708-74-0x0000000000280000-0x0000000000281000-memory.dmpFilesize
4KB
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memory/1716-63-0x0000000000000000-mapping.dmp
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memory/1728-64-0x0000000000000000-mapping.dmp
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memory/1984-62-0x0000000000000000-mapping.dmp