Analysis
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max time kernel
147s -
max time network
145s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
13-04-2024 01:27
Behavioral task
behavioral1
Sample
77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe
Resource
win7-20240221-en
General
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Target
77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe
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Size
663KB
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MD5
8231d8d9d1c38a7f2ebce20944bcfc63
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SHA1
ca190e6cab231bd140dab3a13c7a59cb88c85e7b
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SHA256
77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8
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SHA512
8025a7c2231a562bf4d0ff76a813585606462a51a1b76a34d54f0640b4f591d8abdc32928795162f987f6dfd42f16e10c340f27a62ad87b18cec81bdb9a68cc2
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SSDEEP
12288:+9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9EkNC/:KZ1xuVVjfFoynPaVBUR8f+kN10Ed
Malware Config
Extracted
darkcomet
Guest16
80.222.152.67:80
DC_MUTEX-QWMWN2U
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InstallPath
MSDCSC\msdcsc.exe
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gencode
hdQRh37piHv1
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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:
77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.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" 77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe -
Sets file to hidden 1 TTPs 2 IoCs
Modifies file attributes to stop it showing in Explorer etc.
Processes:
attrib.exeattrib.exepid process 2572 attrib.exe 2576 attrib.exe -
Executes dropped EXE 1 IoCs
Processes:
msdcsc.exepid process 2588 msdcsc.exe -
Loads dropped DLL 2 IoCs
Processes:
77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exepid process 2916 77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe 2916 77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe" 77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of AdjustPrivilegeToken 46 IoCs
Processes:
77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exemsdcsc.exedescription pid process Token: SeIncreaseQuotaPrivilege 2916 77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe Token: SeSecurityPrivilege 2916 77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe Token: SeTakeOwnershipPrivilege 2916 77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe Token: SeLoadDriverPrivilege 2916 77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe Token: SeSystemProfilePrivilege 2916 77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe Token: SeSystemtimePrivilege 2916 77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe Token: SeProfSingleProcessPrivilege 2916 77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe Token: SeIncBasePriorityPrivilege 2916 77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe Token: SeCreatePagefilePrivilege 2916 77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe Token: SeBackupPrivilege 2916 77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe Token: SeRestorePrivilege 2916 77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe Token: SeShutdownPrivilege 2916 77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe Token: SeDebugPrivilege 2916 77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe Token: SeSystemEnvironmentPrivilege 2916 77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe Token: SeChangeNotifyPrivilege 2916 77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe Token: SeRemoteShutdownPrivilege 2916 77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe Token: SeUndockPrivilege 2916 77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe Token: SeManageVolumePrivilege 2916 77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe Token: SeImpersonatePrivilege 2916 77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe Token: SeCreateGlobalPrivilege 2916 77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe Token: 33 2916 77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe Token: 34 2916 77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe Token: 35 2916 77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe Token: SeIncreaseQuotaPrivilege 2588 msdcsc.exe Token: SeSecurityPrivilege 2588 msdcsc.exe Token: SeTakeOwnershipPrivilege 2588 msdcsc.exe Token: SeLoadDriverPrivilege 2588 msdcsc.exe Token: SeSystemProfilePrivilege 2588 msdcsc.exe Token: SeSystemtimePrivilege 2588 msdcsc.exe Token: SeProfSingleProcessPrivilege 2588 msdcsc.exe Token: SeIncBasePriorityPrivilege 2588 msdcsc.exe Token: SeCreatePagefilePrivilege 2588 msdcsc.exe Token: SeBackupPrivilege 2588 msdcsc.exe Token: SeRestorePrivilege 2588 msdcsc.exe Token: SeShutdownPrivilege 2588 msdcsc.exe Token: SeDebugPrivilege 2588 msdcsc.exe Token: SeSystemEnvironmentPrivilege 2588 msdcsc.exe Token: SeChangeNotifyPrivilege 2588 msdcsc.exe Token: SeRemoteShutdownPrivilege 2588 msdcsc.exe Token: SeUndockPrivilege 2588 msdcsc.exe Token: SeManageVolumePrivilege 2588 msdcsc.exe Token: SeImpersonatePrivilege 2588 msdcsc.exe Token: SeCreateGlobalPrivilege 2588 msdcsc.exe Token: 33 2588 msdcsc.exe Token: 34 2588 msdcsc.exe Token: 35 2588 msdcsc.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
msdcsc.exepid process 2588 msdcsc.exe -
Suspicious use of WriteProcessMemory 20 IoCs
Processes:
77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.execmd.execmd.exedescription pid process target process PID 2916 wrote to memory of 2820 2916 77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe cmd.exe PID 2916 wrote to memory of 2820 2916 77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe cmd.exe PID 2916 wrote to memory of 2820 2916 77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe cmd.exe PID 2916 wrote to memory of 2820 2916 77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe cmd.exe PID 2916 wrote to memory of 2476 2916 77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe cmd.exe PID 2916 wrote to memory of 2476 2916 77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe cmd.exe PID 2916 wrote to memory of 2476 2916 77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe cmd.exe PID 2916 wrote to memory of 2476 2916 77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe cmd.exe PID 2820 wrote to memory of 2572 2820 cmd.exe attrib.exe PID 2820 wrote to memory of 2572 2820 cmd.exe attrib.exe PID 2820 wrote to memory of 2572 2820 cmd.exe attrib.exe PID 2820 wrote to memory of 2572 2820 cmd.exe attrib.exe PID 2916 wrote to memory of 2588 2916 77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe msdcsc.exe PID 2916 wrote to memory of 2588 2916 77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe msdcsc.exe PID 2916 wrote to memory of 2588 2916 77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe msdcsc.exe PID 2916 wrote to memory of 2588 2916 77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe msdcsc.exe PID 2476 wrote to memory of 2576 2476 cmd.exe attrib.exe PID 2476 wrote to memory of 2576 2476 cmd.exe attrib.exe PID 2476 wrote to memory of 2576 2476 cmd.exe attrib.exe PID 2476 wrote to memory of 2576 2476 cmd.exe attrib.exe -
Views/modifies file attributes 1 TTPs 2 IoCs
Processes:
attrib.exeattrib.exepid process 2572 attrib.exe 2576 attrib.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe"C:\Users\Admin\AppData\Local\Temp\77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.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\77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe" +s +h2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\attrib.exeattrib "C:\Users\Admin\AppData\Local\Temp\77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe" +s +h3⤵
- Sets file to hidden
- 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⤵
- Sets file to hidden
- 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
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Matrix ATT&CK v13
Persistence
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Privilege Escalation
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Replay Monitor
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Downloads
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\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exeFilesize
663KB
MD58231d8d9d1c38a7f2ebce20944bcfc63
SHA1ca190e6cab231bd140dab3a13c7a59cb88c85e7b
SHA25677058147d37749df7378249a128a5298de49787eba629b634090849456774ce8
SHA5128025a7c2231a562bf4d0ff76a813585606462a51a1b76a34d54f0640b4f591d8abdc32928795162f987f6dfd42f16e10c340f27a62ad87b18cec81bdb9a68cc2
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memory/2588-11-0x0000000000260000-0x0000000000261000-memory.dmpFilesize
4KB
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memory/2588-14-0x0000000000400000-0x00000000004B3000-memory.dmpFilesize
716KB
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memory/2588-16-0x0000000000400000-0x00000000004B3000-memory.dmpFilesize
716KB
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memory/2916-0-0x0000000000360000-0x0000000000361000-memory.dmpFilesize
4KB
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memory/2916-13-0x0000000000400000-0x00000000004B3000-memory.dmpFilesize
716KB