Analysis
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max time kernel
150s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20240412-en -
resource tags
arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system -
submitted
13-04-2024 18:45
Behavioral task
behavioral1
Sample
1305261a64890954599fb2d7578a5b20047ea415d00d5a219f7ae06c21c72a52.exe
Resource
win7-20240220-en
General
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Target
1305261a64890954599fb2d7578a5b20047ea415d00d5a219f7ae06c21c72a52.exe
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Size
283KB
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MD5
dd58cddd601ba0d1d7fc157136a8a1c5
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SHA1
344292fb97107016fb925d93ff81cea9a7e92493
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SHA256
1305261a64890954599fb2d7578a5b20047ea415d00d5a219f7ae06c21c72a52
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SHA512
111e77ca531c6c5ccbb4d27308a4209014b9503a220e1e0b48bb63cde0200013a03963ebaa6e63bb0957e4038c5709e4017228934f74a16e1f3517381257a872
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SSDEEP
6144:7cNYk1yuwEDBum3qYWnl0pd0EX3Zq2b6wfIDYm0P0GT:7cWkbgTYWnYnt/IDYhP0GT
Malware Config
Extracted
darkcomet
220
strateg.ddns.net:220
DC_MUTEX-17TCUZ8
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InstallPath
MSDCSC\explorer.exe
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gencode
ECU92camneaf
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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:
1305261a64890954599fb2d7578a5b20047ea415d00d5a219f7ae06c21c72a52.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\Documents\\MSDCSC\\explorer.exe" 1305261a64890954599fb2d7578a5b20047ea415d00d5a219f7ae06c21c72a52.exe -
Modifies firewall policy service 2 TTPs 3 IoCs
Processes:
explorer.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "0" explorer.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile explorer.exe Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0" explorer.exe -
Modifies security service 2 TTPs 1 IoCs
Processes:
explorer.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wscsvc\Start = "4" explorer.exe -
Processes:
explorer.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" explorer.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1" explorer.exe -
UPX dump on OEP (original entry point) 19 IoCs
Processes:
resource yara_rule behavioral2/memory/3208-0-0x0000000000400000-0x00000000004C7000-memory.dmp UPX C:\Users\Admin\Documents\MSDCSC\explorer.exe UPX behavioral2/memory/3568-63-0x0000000000400000-0x00000000004C7000-memory.dmp UPX behavioral2/memory/3208-66-0x0000000000400000-0x00000000004C7000-memory.dmp UPX behavioral2/memory/3568-67-0x0000000000400000-0x00000000004C7000-memory.dmp UPX behavioral2/memory/3568-68-0x0000000000400000-0x00000000004C7000-memory.dmp UPX behavioral2/memory/3568-69-0x0000000000400000-0x00000000004C7000-memory.dmp UPX behavioral2/memory/3568-70-0x0000000000400000-0x00000000004C7000-memory.dmp UPX behavioral2/memory/3568-71-0x0000000000400000-0x00000000004C7000-memory.dmp UPX behavioral2/memory/3568-72-0x0000000000400000-0x00000000004C7000-memory.dmp UPX behavioral2/memory/3568-73-0x0000000000400000-0x00000000004C7000-memory.dmp UPX behavioral2/memory/3568-74-0x0000000000400000-0x00000000004C7000-memory.dmp UPX behavioral2/memory/3568-75-0x0000000000400000-0x00000000004C7000-memory.dmp UPX behavioral2/memory/3568-76-0x0000000000400000-0x00000000004C7000-memory.dmp UPX behavioral2/memory/3568-77-0x0000000000400000-0x00000000004C7000-memory.dmp UPX behavioral2/memory/3568-78-0x0000000000400000-0x00000000004C7000-memory.dmp UPX behavioral2/memory/3568-79-0x0000000000400000-0x00000000004C7000-memory.dmp UPX behavioral2/memory/3568-80-0x0000000000400000-0x00000000004C7000-memory.dmp UPX behavioral2/memory/3568-81-0x0000000000400000-0x00000000004C7000-memory.dmp UPX -
Disables RegEdit via registry modification 1 IoCs
Processes:
explorer.exedescription ioc process Set value (int) \REGISTRY\USER\S-1-5-21-2177723727-746291240-1644359950-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1" explorer.exe -
Sets file to hidden 1 TTPs 2 IoCs
Modifies file attributes to stop it showing in Explorer etc.
Processes:
attrib.exeattrib.exepid process 2000 attrib.exe 452 attrib.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
1305261a64890954599fb2d7578a5b20047ea415d00d5a219f7ae06c21c72a52.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2177723727-746291240-1644359950-1000\Control Panel\International\Geo\Nation 1305261a64890954599fb2d7578a5b20047ea415d00d5a219f7ae06c21c72a52.exe -
Executes dropped EXE 1 IoCs
Processes:
explorer.exepid process 3568 explorer.exe -
Processes:
resource yara_rule behavioral2/memory/3208-0-0x0000000000400000-0x00000000004C7000-memory.dmp upx C:\Users\Admin\Documents\MSDCSC\explorer.exe upx behavioral2/memory/3568-63-0x0000000000400000-0x00000000004C7000-memory.dmp upx behavioral2/memory/3208-66-0x0000000000400000-0x00000000004C7000-memory.dmp upx behavioral2/memory/3568-67-0x0000000000400000-0x00000000004C7000-memory.dmp upx behavioral2/memory/3568-68-0x0000000000400000-0x00000000004C7000-memory.dmp upx behavioral2/memory/3568-69-0x0000000000400000-0x00000000004C7000-memory.dmp upx behavioral2/memory/3568-70-0x0000000000400000-0x00000000004C7000-memory.dmp upx behavioral2/memory/3568-71-0x0000000000400000-0x00000000004C7000-memory.dmp upx behavioral2/memory/3568-72-0x0000000000400000-0x00000000004C7000-memory.dmp upx behavioral2/memory/3568-73-0x0000000000400000-0x00000000004C7000-memory.dmp upx behavioral2/memory/3568-74-0x0000000000400000-0x00000000004C7000-memory.dmp upx behavioral2/memory/3568-75-0x0000000000400000-0x00000000004C7000-memory.dmp upx behavioral2/memory/3568-76-0x0000000000400000-0x00000000004C7000-memory.dmp upx behavioral2/memory/3568-77-0x0000000000400000-0x00000000004C7000-memory.dmp upx behavioral2/memory/3568-78-0x0000000000400000-0x00000000004C7000-memory.dmp upx behavioral2/memory/3568-79-0x0000000000400000-0x00000000004C7000-memory.dmp upx behavioral2/memory/3568-80-0x0000000000400000-0x00000000004C7000-memory.dmp upx behavioral2/memory/3568-81-0x0000000000400000-0x00000000004C7000-memory.dmp upx -
Processes:
explorer.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" explorer.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1" explorer.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
1305261a64890954599fb2d7578a5b20047ea415d00d5a219f7ae06c21c72a52.exeexplorer.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2177723727-746291240-1644359950-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\explorer.exe" 1305261a64890954599fb2d7578a5b20047ea415d00d5a219f7ae06c21c72a52.exe Set value (str) \REGISTRY\USER\S-1-5-21-2177723727-746291240-1644359950-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\explorer.exe" explorer.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Modifies registry class 1 IoCs
Processes:
1305261a64890954599fb2d7578a5b20047ea415d00d5a219f7ae06c21c72a52.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\ 1305261a64890954599fb2d7578a5b20047ea415d00d5a219f7ae06c21c72a52.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
explorer.exepid process 3568 explorer.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
Processes:
1305261a64890954599fb2d7578a5b20047ea415d00d5a219f7ae06c21c72a52.exeexplorer.exedescription pid process Token: SeIncreaseQuotaPrivilege 3208 1305261a64890954599fb2d7578a5b20047ea415d00d5a219f7ae06c21c72a52.exe Token: SeSecurityPrivilege 3208 1305261a64890954599fb2d7578a5b20047ea415d00d5a219f7ae06c21c72a52.exe Token: SeTakeOwnershipPrivilege 3208 1305261a64890954599fb2d7578a5b20047ea415d00d5a219f7ae06c21c72a52.exe Token: SeLoadDriverPrivilege 3208 1305261a64890954599fb2d7578a5b20047ea415d00d5a219f7ae06c21c72a52.exe Token: SeSystemProfilePrivilege 3208 1305261a64890954599fb2d7578a5b20047ea415d00d5a219f7ae06c21c72a52.exe Token: SeSystemtimePrivilege 3208 1305261a64890954599fb2d7578a5b20047ea415d00d5a219f7ae06c21c72a52.exe Token: SeProfSingleProcessPrivilege 3208 1305261a64890954599fb2d7578a5b20047ea415d00d5a219f7ae06c21c72a52.exe Token: SeIncBasePriorityPrivilege 3208 1305261a64890954599fb2d7578a5b20047ea415d00d5a219f7ae06c21c72a52.exe Token: SeCreatePagefilePrivilege 3208 1305261a64890954599fb2d7578a5b20047ea415d00d5a219f7ae06c21c72a52.exe Token: SeBackupPrivilege 3208 1305261a64890954599fb2d7578a5b20047ea415d00d5a219f7ae06c21c72a52.exe Token: SeRestorePrivilege 3208 1305261a64890954599fb2d7578a5b20047ea415d00d5a219f7ae06c21c72a52.exe Token: SeShutdownPrivilege 3208 1305261a64890954599fb2d7578a5b20047ea415d00d5a219f7ae06c21c72a52.exe Token: SeDebugPrivilege 3208 1305261a64890954599fb2d7578a5b20047ea415d00d5a219f7ae06c21c72a52.exe Token: SeSystemEnvironmentPrivilege 3208 1305261a64890954599fb2d7578a5b20047ea415d00d5a219f7ae06c21c72a52.exe Token: SeChangeNotifyPrivilege 3208 1305261a64890954599fb2d7578a5b20047ea415d00d5a219f7ae06c21c72a52.exe Token: SeRemoteShutdownPrivilege 3208 1305261a64890954599fb2d7578a5b20047ea415d00d5a219f7ae06c21c72a52.exe Token: SeUndockPrivilege 3208 1305261a64890954599fb2d7578a5b20047ea415d00d5a219f7ae06c21c72a52.exe Token: SeManageVolumePrivilege 3208 1305261a64890954599fb2d7578a5b20047ea415d00d5a219f7ae06c21c72a52.exe Token: SeImpersonatePrivilege 3208 1305261a64890954599fb2d7578a5b20047ea415d00d5a219f7ae06c21c72a52.exe Token: SeCreateGlobalPrivilege 3208 1305261a64890954599fb2d7578a5b20047ea415d00d5a219f7ae06c21c72a52.exe Token: 33 3208 1305261a64890954599fb2d7578a5b20047ea415d00d5a219f7ae06c21c72a52.exe Token: 34 3208 1305261a64890954599fb2d7578a5b20047ea415d00d5a219f7ae06c21c72a52.exe Token: 35 3208 1305261a64890954599fb2d7578a5b20047ea415d00d5a219f7ae06c21c72a52.exe Token: 36 3208 1305261a64890954599fb2d7578a5b20047ea415d00d5a219f7ae06c21c72a52.exe Token: SeIncreaseQuotaPrivilege 3568 explorer.exe Token: SeSecurityPrivilege 3568 explorer.exe Token: SeTakeOwnershipPrivilege 3568 explorer.exe Token: SeLoadDriverPrivilege 3568 explorer.exe Token: SeSystemProfilePrivilege 3568 explorer.exe Token: SeSystemtimePrivilege 3568 explorer.exe Token: SeProfSingleProcessPrivilege 3568 explorer.exe Token: SeIncBasePriorityPrivilege 3568 explorer.exe Token: SeCreatePagefilePrivilege 3568 explorer.exe Token: SeBackupPrivilege 3568 explorer.exe Token: SeRestorePrivilege 3568 explorer.exe Token: SeShutdownPrivilege 3568 explorer.exe Token: SeDebugPrivilege 3568 explorer.exe Token: SeSystemEnvironmentPrivilege 3568 explorer.exe Token: SeChangeNotifyPrivilege 3568 explorer.exe Token: SeRemoteShutdownPrivilege 3568 explorer.exe Token: SeUndockPrivilege 3568 explorer.exe Token: SeManageVolumePrivilege 3568 explorer.exe Token: SeImpersonatePrivilege 3568 explorer.exe Token: SeCreateGlobalPrivilege 3568 explorer.exe Token: 33 3568 explorer.exe Token: 34 3568 explorer.exe Token: 35 3568 explorer.exe Token: 36 3568 explorer.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
explorer.exepid process 3568 explorer.exe -
Suspicious use of WriteProcessMemory 37 IoCs
Processes:
1305261a64890954599fb2d7578a5b20047ea415d00d5a219f7ae06c21c72a52.execmd.execmd.exeexplorer.exedescription pid process target process PID 3208 wrote to memory of 3124 3208 1305261a64890954599fb2d7578a5b20047ea415d00d5a219f7ae06c21c72a52.exe cmd.exe PID 3208 wrote to memory of 3124 3208 1305261a64890954599fb2d7578a5b20047ea415d00d5a219f7ae06c21c72a52.exe cmd.exe PID 3208 wrote to memory of 3124 3208 1305261a64890954599fb2d7578a5b20047ea415d00d5a219f7ae06c21c72a52.exe cmd.exe PID 3208 wrote to memory of 1448 3208 1305261a64890954599fb2d7578a5b20047ea415d00d5a219f7ae06c21c72a52.exe cmd.exe PID 3208 wrote to memory of 1448 3208 1305261a64890954599fb2d7578a5b20047ea415d00d5a219f7ae06c21c72a52.exe cmd.exe PID 3208 wrote to memory of 1448 3208 1305261a64890954599fb2d7578a5b20047ea415d00d5a219f7ae06c21c72a52.exe cmd.exe PID 3124 wrote to memory of 2000 3124 cmd.exe attrib.exe PID 3124 wrote to memory of 2000 3124 cmd.exe attrib.exe PID 3124 wrote to memory of 2000 3124 cmd.exe attrib.exe PID 1448 wrote to memory of 452 1448 cmd.exe attrib.exe PID 1448 wrote to memory of 452 1448 cmd.exe attrib.exe PID 1448 wrote to memory of 452 1448 cmd.exe attrib.exe PID 3208 wrote to memory of 3568 3208 1305261a64890954599fb2d7578a5b20047ea415d00d5a219f7ae06c21c72a52.exe explorer.exe PID 3208 wrote to memory of 3568 3208 1305261a64890954599fb2d7578a5b20047ea415d00d5a219f7ae06c21c72a52.exe explorer.exe PID 3208 wrote to memory of 3568 3208 1305261a64890954599fb2d7578a5b20047ea415d00d5a219f7ae06c21c72a52.exe explorer.exe PID 3568 wrote to memory of 4808 3568 explorer.exe notepad.exe PID 3568 wrote to memory of 4808 3568 explorer.exe notepad.exe PID 3568 wrote to memory of 4808 3568 explorer.exe notepad.exe PID 3568 wrote to memory of 4808 3568 explorer.exe notepad.exe PID 3568 wrote to memory of 4808 3568 explorer.exe notepad.exe PID 3568 wrote to memory of 4808 3568 explorer.exe notepad.exe PID 3568 wrote to memory of 4808 3568 explorer.exe notepad.exe PID 3568 wrote to memory of 4808 3568 explorer.exe notepad.exe PID 3568 wrote to memory of 4808 3568 explorer.exe notepad.exe PID 3568 wrote to memory of 4808 3568 explorer.exe notepad.exe PID 3568 wrote to memory of 4808 3568 explorer.exe notepad.exe PID 3568 wrote to memory of 4808 3568 explorer.exe notepad.exe PID 3568 wrote to memory of 4808 3568 explorer.exe notepad.exe PID 3568 wrote to memory of 4808 3568 explorer.exe notepad.exe PID 3568 wrote to memory of 4808 3568 explorer.exe notepad.exe PID 3568 wrote to memory of 4808 3568 explorer.exe notepad.exe PID 3568 wrote to memory of 4808 3568 explorer.exe notepad.exe PID 3568 wrote to memory of 4808 3568 explorer.exe notepad.exe PID 3568 wrote to memory of 4808 3568 explorer.exe notepad.exe PID 3568 wrote to memory of 4808 3568 explorer.exe notepad.exe PID 3568 wrote to memory of 4808 3568 explorer.exe notepad.exe PID 3568 wrote to memory of 4808 3568 explorer.exe notepad.exe -
System policy modification 1 TTPs 3 IoCs
Processes:
explorer.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern\NoControlPanel = "1" explorer.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion explorer.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern explorer.exe -
Views/modifies file attributes 1 TTPs 2 IoCs
Processes:
attrib.exeattrib.exepid process 2000 attrib.exe 452 attrib.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\1305261a64890954599fb2d7578a5b20047ea415d00d5a219f7ae06c21c72a52.exe"C:\Users\Admin\AppData\Local\Temp\1305261a64890954599fb2d7578a5b20047ea415d00d5a219f7ae06c21c72a52.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:3208 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\1305261a64890954599fb2d7578a5b20047ea415d00d5a219f7ae06c21c72a52.exe" +s +h2⤵
- Suspicious use of WriteProcessMemory
PID:3124 -
C:\Windows\SysWOW64\attrib.exeattrib "C:\Users\Admin\AppData\Local\Temp\1305261a64890954599fb2d7578a5b20047ea415d00d5a219f7ae06c21c72a52.exe" +s +h3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:2000 -
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:1448 -
C:\Windows\SysWOW64\attrib.exeattrib "C:\Users\Admin\AppData\Local\Temp" +s +h3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:452 -
C:\Users\Admin\Documents\MSDCSC\explorer.exe"C:\Users\Admin\Documents\MSDCSC\explorer.exe"2⤵
- Modifies firewall policy service
- Modifies security service
- Windows security bypass
- Disables RegEdit via registry modification
- Executes dropped EXE
- Windows security modification
- Adds Run key to start application
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- System policy modification
PID:3568 -
C:\Windows\SysWOW64\notepad.exenotepad3⤵PID:4808
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Create or Modify System Process
2Windows Service
2Privilege Escalation
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Create or Modify System Process
2Windows Service
2Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
283KB
MD5dd58cddd601ba0d1d7fc157136a8a1c5
SHA1344292fb97107016fb925d93ff81cea9a7e92493
SHA2561305261a64890954599fb2d7578a5b20047ea415d00d5a219f7ae06c21c72a52
SHA512111e77ca531c6c5ccbb4d27308a4209014b9503a220e1e0b48bb63cde0200013a03963ebaa6e63bb0957e4038c5709e4017228934f74a16e1f3517381257a872