Analysis
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max time kernel
149s -
max time network
126s -
platform
windows10-ltsc 2021_x64 -
resource
win10ltsc2021-20241211-en -
resource tags
arch:x64arch:x86image:win10ltsc2021-20241211-enlocale:en-usos:windows10-ltsc 2021-x64system -
submitted
14-12-2024 20:20
Behavioral task
behavioral1
Sample
bebe.exe
Resource
win10v2004-20241007-en
windows10-2004-x64
23 signatures
150 seconds
General
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Target
bebe.exe
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Size
673KB
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MD5
c54bab8eb46885b47508cfbfde84d078
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SHA1
120c346c4e73ebced892acecb4221614ebb8dd33
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SHA256
f19cedc8f5dd2c0a5d788a55f2232c8e26b32067fe113762688d83aff4ce99f6
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SHA512
ef2bfffca1582fc968620af5356339f3a053c58f9f677efcbb902aa3e4b50eb05c693326ac70e619451a3e819b82f5d42f684e374937b26f81db770ceaaa2a1e
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SSDEEP
12288:S9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/hOvk:+Z1xuVVjfFoynPaVBUR8f+kN10EB8vk
Malware Config
Extracted
Family
darkcomet
Botnet
Ýndiren
C2
127.0.0.1:1604
Mutex
DC_MUTEX-V1NDW18
Attributes
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InstallPath
Windows gezgini\explorer.exe
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gencode
0uLqlTjXDDg2
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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
System
Signatures
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Darkcomet family
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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:\\Windows\\system32\\Windows gezgini\\explorer.exe" bebe.exe -
Modifies firewall policy service 3 TTPs 6 IoCs
description ioc Process 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 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 iexplore.exe Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0" iexplore.exe Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "0" iexplore.exe -
Modifies security service 2 TTPs 2 IoCs
description ioc Process Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wscsvc\Start = "4" explorer.exe Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wscsvc\Start = "4" iexplore.exe -
description 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 Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" iexplore.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1" iexplore.exe -
Disables RegEdit via registry modification 2 IoCs
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-2934520114-3201407646-466687995-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1" explorer.exe Set value (int) \REGISTRY\USER\S-1-5-21-2934520114-3201407646-466687995-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1" iexplore.exe -
Disables Task Manager via registry modification
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Sets file to hidden 1 TTPs 2 IoCs
Modifies file attributes to stop it showing in Explorer etc.
pid Process 3764 attrib.exe 468 attrib.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-1-5-21-2934520114-3201407646-466687995-1000\Control Panel\International\Geo\Nation bebe.exe -
Executes dropped EXE 1 IoCs
pid Process 4240 explorer.exe -
description 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 3 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2934520114-3201407646-466687995-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\System = "C:\\Windows\\system32\\Windows gezgini\\explorer.exe" bebe.exe Set value (str) \REGISTRY\USER\S-1-5-21-2934520114-3201407646-466687995-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\System = "C:\\Windows\\system32\\Windows gezgini\\explorer.exe" explorer.exe Set value (str) \REGISTRY\USER\S-1-5-21-2934520114-3201407646-466687995-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\System = "C:\\Windows\\system32\\Windows gezgini\\explorer.exe" iexplore.exe -
Drops file in System32 directory 3 IoCs
description ioc Process File created C:\Windows\SysWOW64\Windows gezgini\explorer.exe bebe.exe File opened for modification C:\Windows\SysWOW64\Windows gezgini\explorer.exe bebe.exe File opened for modification C:\Windows\SysWOW64\Windows gezgini\ bebe.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 4240 set thread context of 2952 4240 explorer.exe 89 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 8 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language notepad.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language bebe.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language attrib.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language attrib.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language explorer.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language iexplore.exe -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\ bebe.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeIncreaseQuotaPrivilege 3800 bebe.exe Token: SeSecurityPrivilege 3800 bebe.exe Token: SeTakeOwnershipPrivilege 3800 bebe.exe Token: SeLoadDriverPrivilege 3800 bebe.exe Token: SeSystemProfilePrivilege 3800 bebe.exe Token: SeSystemtimePrivilege 3800 bebe.exe Token: SeProfSingleProcessPrivilege 3800 bebe.exe Token: SeIncBasePriorityPrivilege 3800 bebe.exe Token: SeCreatePagefilePrivilege 3800 bebe.exe Token: SeBackupPrivilege 3800 bebe.exe Token: SeRestorePrivilege 3800 bebe.exe Token: SeShutdownPrivilege 3800 bebe.exe Token: SeDebugPrivilege 3800 bebe.exe Token: SeSystemEnvironmentPrivilege 3800 bebe.exe Token: SeChangeNotifyPrivilege 3800 bebe.exe Token: SeRemoteShutdownPrivilege 3800 bebe.exe Token: SeUndockPrivilege 3800 bebe.exe Token: SeManageVolumePrivilege 3800 bebe.exe Token: SeImpersonatePrivilege 3800 bebe.exe Token: SeCreateGlobalPrivilege 3800 bebe.exe Token: 33 3800 bebe.exe Token: 34 3800 bebe.exe Token: 35 3800 bebe.exe Token: 36 3800 bebe.exe Token: SeIncreaseQuotaPrivilege 4240 explorer.exe Token: SeSecurityPrivilege 4240 explorer.exe Token: SeTakeOwnershipPrivilege 4240 explorer.exe Token: SeLoadDriverPrivilege 4240 explorer.exe Token: SeSystemProfilePrivilege 4240 explorer.exe Token: SeSystemtimePrivilege 4240 explorer.exe Token: SeProfSingleProcessPrivilege 4240 explorer.exe Token: SeIncBasePriorityPrivilege 4240 explorer.exe Token: SeCreatePagefilePrivilege 4240 explorer.exe Token: SeBackupPrivilege 4240 explorer.exe Token: SeRestorePrivilege 4240 explorer.exe Token: SeShutdownPrivilege 4240 explorer.exe Token: SeDebugPrivilege 4240 explorer.exe Token: SeSystemEnvironmentPrivilege 4240 explorer.exe Token: SeChangeNotifyPrivilege 4240 explorer.exe Token: SeRemoteShutdownPrivilege 4240 explorer.exe Token: SeUndockPrivilege 4240 explorer.exe Token: SeManageVolumePrivilege 4240 explorer.exe Token: SeImpersonatePrivilege 4240 explorer.exe Token: SeCreateGlobalPrivilege 4240 explorer.exe Token: 33 4240 explorer.exe Token: 34 4240 explorer.exe Token: 35 4240 explorer.exe Token: 36 4240 explorer.exe Token: SeIncreaseQuotaPrivilege 2952 iexplore.exe Token: SeSecurityPrivilege 2952 iexplore.exe Token: SeTakeOwnershipPrivilege 2952 iexplore.exe Token: SeLoadDriverPrivilege 2952 iexplore.exe Token: SeSystemProfilePrivilege 2952 iexplore.exe Token: SeSystemtimePrivilege 2952 iexplore.exe Token: SeProfSingleProcessPrivilege 2952 iexplore.exe Token: SeIncBasePriorityPrivilege 2952 iexplore.exe Token: SeCreatePagefilePrivilege 2952 iexplore.exe Token: SeBackupPrivilege 2952 iexplore.exe Token: SeRestorePrivilege 2952 iexplore.exe Token: SeShutdownPrivilege 2952 iexplore.exe Token: SeDebugPrivilege 2952 iexplore.exe Token: SeSystemEnvironmentPrivilege 2952 iexplore.exe Token: SeChangeNotifyPrivilege 2952 iexplore.exe Token: SeRemoteShutdownPrivilege 2952 iexplore.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 2952 iexplore.exe -
Suspicious use of WriteProcessMemory 42 IoCs
description pid Process procid_target PID 3800 wrote to memory of 4656 3800 bebe.exe 81 PID 3800 wrote to memory of 4656 3800 bebe.exe 81 PID 3800 wrote to memory of 4656 3800 bebe.exe 81 PID 3800 wrote to memory of 4576 3800 bebe.exe 83 PID 3800 wrote to memory of 4576 3800 bebe.exe 83 PID 3800 wrote to memory of 4576 3800 bebe.exe 83 PID 4656 wrote to memory of 3764 4656 cmd.exe 85 PID 4656 wrote to memory of 3764 4656 cmd.exe 85 PID 4656 wrote to memory of 3764 4656 cmd.exe 85 PID 4576 wrote to memory of 468 4576 cmd.exe 86 PID 4576 wrote to memory of 468 4576 cmd.exe 86 PID 4576 wrote to memory of 468 4576 cmd.exe 86 PID 3800 wrote to memory of 4240 3800 bebe.exe 88 PID 3800 wrote to memory of 4240 3800 bebe.exe 88 PID 3800 wrote to memory of 4240 3800 bebe.exe 88 PID 4240 wrote to memory of 2952 4240 explorer.exe 89 PID 4240 wrote to memory of 2952 4240 explorer.exe 89 PID 4240 wrote to memory of 2952 4240 explorer.exe 89 PID 4240 wrote to memory of 2952 4240 explorer.exe 89 PID 4240 wrote to memory of 2952 4240 explorer.exe 89 PID 2952 wrote to memory of 3776 2952 iexplore.exe 90 PID 2952 wrote to memory of 3776 2952 iexplore.exe 90 PID 2952 wrote to memory of 3776 2952 iexplore.exe 90 PID 2952 wrote to memory of 3776 2952 iexplore.exe 90 PID 2952 wrote to memory of 3776 2952 iexplore.exe 90 PID 2952 wrote to memory of 3776 2952 iexplore.exe 90 PID 2952 wrote to memory of 3776 2952 iexplore.exe 90 PID 2952 wrote to memory of 3776 2952 iexplore.exe 90 PID 2952 wrote to memory of 3776 2952 iexplore.exe 90 PID 2952 wrote to memory of 3776 2952 iexplore.exe 90 PID 2952 wrote to memory of 3776 2952 iexplore.exe 90 PID 2952 wrote to memory of 3776 2952 iexplore.exe 90 PID 2952 wrote to memory of 3776 2952 iexplore.exe 90 PID 2952 wrote to memory of 3776 2952 iexplore.exe 90 PID 2952 wrote to memory of 3776 2952 iexplore.exe 90 PID 2952 wrote to memory of 3776 2952 iexplore.exe 90 PID 2952 wrote to memory of 3776 2952 iexplore.exe 90 PID 2952 wrote to memory of 3776 2952 iexplore.exe 90 PID 2952 wrote to memory of 3776 2952 iexplore.exe 90 PID 2952 wrote to memory of 3776 2952 iexplore.exe 90 PID 2952 wrote to memory of 3776 2952 iexplore.exe 90 PID 2952 wrote to memory of 3776 2952 iexplore.exe 90 -
System policy modification 1 TTPs 3 IoCs
description ioc Process 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 Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern\NoControlPanel = "1" explorer.exe -
Views/modifies file attributes 1 TTPs 2 IoCs
pid Process 3764 attrib.exe 468 attrib.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\bebe.exe"C:\Users\Admin\AppData\Local\Temp\bebe.exe"1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3800 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\bebe.exe" +s +h2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4656 -
C:\Windows\SysWOW64\attrib.exeattrib "C:\Users\Admin\AppData\Local\Temp\bebe.exe" +s +h3⤵
- Sets file to hidden
- System Location Discovery: System Language Discovery
- Views/modifies file attributes
PID:3764
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4576 -
C:\Windows\SysWOW64\attrib.exeattrib "C:\Users\Admin\AppData\Local\Temp" +s +h3⤵
- Sets file to hidden
- System Location Discovery: System Language Discovery
- Views/modifies file attributes
PID:468
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C:\Windows\SysWOW64\Windows gezgini\explorer.exe"C:\Windows\system32\Windows gezgini\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 use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
PID:4240 -
C:\Program Files (x86)\Internet Explorer\iexplore.exe"C:\Program Files (x86)\Internet Explorer\iexplore.exe"3⤵
- Modifies firewall policy service
- Modifies security service
- Windows security bypass
- Disables RegEdit via registry modification
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2952 -
C:\Windows\SysWOW64\notepad.exenotepad4⤵
- System Location Discovery: System Language Discovery
PID:3776
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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
2Defense Evasion
Hide Artifacts
2Hidden Files and Directories
2Impair Defenses
3Disable or Modify System Firewall
1Disable or Modify Tools
2Modify Registry
7Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
673KB
MD5c54bab8eb46885b47508cfbfde84d078
SHA1120c346c4e73ebced892acecb4221614ebb8dd33
SHA256f19cedc8f5dd2c0a5d788a55f2232c8e26b32067fe113762688d83aff4ce99f6
SHA512ef2bfffca1582fc968620af5356339f3a053c58f9f677efcbb902aa3e4b50eb05c693326ac70e619451a3e819b82f5d42f684e374937b26f81db770ceaaa2a1e