Overview
overview
10Static
static
3Ransomware.7ev3n.exe
windows7-x64
Ransomware.7ev3n.exe
windows10-2004-x64
Ransomware...it.exe
windows7-x64
10Ransomware...it.exe
windows10-2004-x64
10Ransomware...us.exe
windows7-x64
10Ransomware...us.exe
windows10-2004-x64
10Ransomware...er.exe
windows7-x64
10Ransomware...er.exe
windows10-2004-x64
10Analysis
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max time kernel
30s -
max time network
36s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
07-03-2024 21:34
Static task
static1
Behavioral task
behavioral1
Sample
Ransomware.7ev3n.exe
Resource
win7-20240215-en
Behavioral task
behavioral2
Sample
Ransomware.7ev3n.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral3
Sample
Ransomware.BadRabbit.exe
Resource
win7-20240221-en
Behavioral task
behavioral4
Sample
Ransomware.BadRabbit.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral5
Sample
Ransomware.CoronaVirus.exe
Resource
win7-20240221-en
Behavioral task
behavioral6
Sample
Ransomware.CoronaVirus.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral7
Sample
Ransomware.CryptoLocker.exe
Resource
win7-20240215-en
Behavioral task
behavioral8
Sample
Ransomware.CryptoLocker.exe
Resource
win10v2004-20240226-en
Errors
General
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Target
Ransomware.7ev3n.exe
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Size
315KB
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MD5
9f8bc96c96d43ecb69f883388d228754
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SHA1
61ed25a706afa2f6684bb4d64f69c5fb29d20953
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SHA256
7d373ccb96d1dbb1856ef31afa87c2112a0c1795a796ab01cb154700288afec5
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SHA512
550a891c1059f58aa983138caf65a7ea9c326cb1b94c15f3e7594128f6e9f1295b9c2dbc0925637dba7c94e938083fffc6a63dc7c2e5b1e247679931cce505c6
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SSDEEP
6144:BswDdb2MemnBVlz0SoVbO4A6OA4Trl28TyT6llY1/I8cWJWlfTXv:BswRSslz0P1OdFXJlJ8buXv
Malware Config
Signatures
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Modifies WinLogon for persistence 2 TTPs 1 IoCs
Processes:
reg.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "C:\\Users\\Admin\\AppData\\Local\\system.exe" reg.exe -
Processes:
reg.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" reg.exe -
Executes dropped EXE 1 IoCs
Processes:
system.exepid process 4628 system.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
reg.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\System = "C:\\Users\\Admin\\AppData\\Local\\system.exe" reg.exe -
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Modifies data under HKEY_USERS 15 IoCs
Processes:
LogonUI.exedescription ioc process Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationGlassAttribute = "1" LogonUI.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\StartColorMenu = "4288567808" LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentColorMenu = "4292311040" LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationBlurBalance = "1" LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\AccentColor = "4292311040" LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglow = "3288365271" LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\EnableWindowColorization = "109" LogonUI.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent LogonUI.exe Set value (data) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentPalette = a6d8ff0076b9ed00429ce3000078d700005a9e000042750000264200f7630c00 LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History\AutoColor = "0" LogonUI.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColor = "3288365271" LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColorBalance = "89" LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglowBalance = "10" LogonUI.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
shutdown.exedescription pid process Token: SeShutdownPrivilege 1620 shutdown.exe Token: SeRemoteShutdownPrivilege 1620 shutdown.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
LogonUI.exepid process 908 LogonUI.exe -
Suspicious use of WriteProcessMemory 57 IoCs
Processes:
Ransomware.7ev3n.exesystem.execmd.execmd.execmd.execmd.execmd.execmd.execmd.execmd.exedescription pid process target process PID 684 wrote to memory of 4628 684 Ransomware.7ev3n.exe system.exe PID 684 wrote to memory of 4628 684 Ransomware.7ev3n.exe system.exe PID 684 wrote to memory of 4628 684 Ransomware.7ev3n.exe system.exe PID 4628 wrote to memory of 4040 4628 system.exe cmd.exe PID 4628 wrote to memory of 4040 4628 system.exe cmd.exe PID 4628 wrote to memory of 4040 4628 system.exe cmd.exe PID 4628 wrote to memory of 3804 4628 system.exe SCHTASKS.exe PID 4628 wrote to memory of 3804 4628 system.exe SCHTASKS.exe PID 4628 wrote to memory of 3804 4628 system.exe SCHTASKS.exe PID 4628 wrote to memory of 5032 4628 system.exe cmd.exe PID 4628 wrote to memory of 5032 4628 system.exe cmd.exe PID 4628 wrote to memory of 5032 4628 system.exe cmd.exe PID 4628 wrote to memory of 876 4628 system.exe cmd.exe PID 4628 wrote to memory of 876 4628 system.exe cmd.exe PID 4628 wrote to memory of 876 4628 system.exe cmd.exe PID 4628 wrote to memory of 2716 4628 system.exe cmd.exe PID 4628 wrote to memory of 2716 4628 system.exe cmd.exe PID 4628 wrote to memory of 2716 4628 system.exe cmd.exe PID 4628 wrote to memory of 2396 4628 system.exe cmd.exe PID 4628 wrote to memory of 2396 4628 system.exe cmd.exe PID 4628 wrote to memory of 2396 4628 system.exe cmd.exe PID 4628 wrote to memory of 3224 4628 system.exe cmd.exe PID 4628 wrote to memory of 3224 4628 system.exe cmd.exe PID 4628 wrote to memory of 3224 4628 system.exe cmd.exe PID 4628 wrote to memory of 4416 4628 system.exe cmd.exe PID 4628 wrote to memory of 4416 4628 system.exe cmd.exe PID 4628 wrote to memory of 4416 4628 system.exe cmd.exe PID 876 wrote to memory of 3492 876 cmd.exe reg.exe PID 876 wrote to memory of 3492 876 cmd.exe reg.exe PID 876 wrote to memory of 3492 876 cmd.exe reg.exe PID 3224 wrote to memory of 4680 3224 cmd.exe reg.exe PID 3224 wrote to memory of 4680 3224 cmd.exe reg.exe PID 3224 wrote to memory of 4680 3224 cmd.exe reg.exe PID 4416 wrote to memory of 3680 4416 cmd.exe reg.exe PID 4416 wrote to memory of 3680 4416 cmd.exe reg.exe PID 4416 wrote to memory of 3680 4416 cmd.exe reg.exe PID 2716 wrote to memory of 3508 2716 cmd.exe reg.exe PID 2716 wrote to memory of 3508 2716 cmd.exe reg.exe PID 2716 wrote to memory of 3508 2716 cmd.exe reg.exe PID 5032 wrote to memory of 3988 5032 cmd.exe reg.exe PID 5032 wrote to memory of 3988 5032 cmd.exe reg.exe PID 5032 wrote to memory of 3988 5032 cmd.exe reg.exe PID 2396 wrote to memory of 64 2396 cmd.exe reg.exe PID 2396 wrote to memory of 64 2396 cmd.exe reg.exe PID 2396 wrote to memory of 64 2396 cmd.exe reg.exe PID 4628 wrote to memory of 3988 4628 system.exe cmd.exe PID 4628 wrote to memory of 3988 4628 system.exe cmd.exe PID 4628 wrote to memory of 3988 4628 system.exe cmd.exe PID 3988 wrote to memory of 2960 3988 cmd.exe reg.exe PID 3988 wrote to memory of 2960 3988 cmd.exe reg.exe PID 3988 wrote to memory of 2960 3988 cmd.exe reg.exe PID 4628 wrote to memory of 4108 4628 system.exe cmd.exe PID 4628 wrote to memory of 4108 4628 system.exe cmd.exe PID 4628 wrote to memory of 4108 4628 system.exe cmd.exe PID 4108 wrote to memory of 1620 4108 cmd.exe shutdown.exe PID 4108 wrote to memory of 1620 4108 cmd.exe shutdown.exe PID 4108 wrote to memory of 1620 4108 cmd.exe shutdown.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Ransomware.7ev3n.exe"C:\Users\Admin\AppData\Local\Temp\Ransomware.7ev3n.exe"1⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\system.exe"C:\Users\Admin\AppData\Local\system.exe"2⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\del.bat3⤵
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C:\Windows\SysWOW64\SCHTASKS.exeC:\Windows\System32\SCHTASKS.exe /create /SC ONLOGON /TN uac /TR "C:\Users\Admin\AppData\Local\bcd.bat" /RL HIGHEST /f3⤵
- Creates scheduled task(s)
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C:\windows\SysWOW64\cmd.exeC:\windows\system32\cmd.exe /c REG ADD "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon" /v "Shell" /t REG_SZ /d "C:\Users\Admin\AppData\Local\system.exe" /f /reg:643⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\reg.exeREG ADD "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon" /v "Shell" /t REG_SZ /d "C:\Users\Admin\AppData\Local\system.exe" /f /reg:644⤵
- Modifies WinLogon for persistence
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C:\windows\SysWOW64\cmd.exeC:\windows\system32\cmd.exe /c REG ADD "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "System" /t REG_SZ /d "C:\Users\Admin\AppData\Local\system.exe" /f /reg:643⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\reg.exeREG ADD "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "System" /t REG_SZ /d "C:\Users\Admin\AppData\Local\system.exe" /f /reg:644⤵
- Adds Run key to start application
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C:\windows\SysWOW64\cmd.exeC:\windows\system32\cmd.exe /c REG ADD "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Keyboard Layout" /v "Scancode Map" /t REG_BINARY /d "00000000000000001700000000003800000038e000005be000005ce00000360000001d0000001de000000f000000010000001c0000003e0000003b00000044000000450000003d0000005de000000000" /f /reg:643⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\reg.exeREG ADD "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Keyboard Layout" /v "Scancode Map" /t REG_BINARY /d "00000000000000001700000000003800000038e000005be000005ce00000360000001d0000001de000000f000000010000001c0000003e0000003b00000044000000450000003d0000005de000000000" /f /reg:644⤵
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C:\windows\SysWOW64\cmd.exeC:\windows\system32\cmd.exe /c REG ADD "HKEY_CURRENT_USER\Control Panel\Accessibility\StickyKeys" /v "Flags" /t REG_SZ /d 506 /f /reg:643⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\reg.exeREG ADD "HKEY_CURRENT_USER\Control Panel\Accessibility\StickyKeys" /v "Flags" /t REG_SZ /d 506 /f /reg:644⤵
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C:\windows\SysWOW64\cmd.exeC:\windows\system32\cmd.exe /c REG ADD "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion" /v "rgd_bcd_condition" /t REG_SZ /d 1 /f /reg:643⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\reg.exeREG ADD "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion" /v "rgd_bcd_condition" /t REG_SZ /d 1 /f /reg:644⤵
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C:\windows\SysWOW64\cmd.exeC:\windows\system32\cmd.exe /c REG ADD "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System" /v "EnableLUA" /t REG_DWORD /d 0 /f /reg:643⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\reg.exeREG ADD "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System" /v "EnableLUA" /t REG_DWORD /d 0 /f /reg:644⤵
- UAC bypass
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c REG ADD "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion" /v "crypted" /t REG_SZ /d 1 /f /reg:643⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\reg.exeREG ADD "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion" /v "crypted" /t REG_SZ /d 1 /f /reg:644⤵
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c shutdown -r -t 10 -f3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\shutdown.exeshutdown -r -t 10 -f4⤵
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\LogonUI.exe"LogonUI.exe" /flags:0x4 /state0:0xa3948855 /state1:0x41c64e6d1⤵
- Modifies data under HKEY_USERS
- 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
1Scheduled Task/Job
1Privilege Escalation
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Abuse Elevation Control Mechanism
1Bypass User Account Control
1Scheduled Task/Job
1Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\del.batFilesize
76B
MD5bd6cd262cc5cccb49b23151fd6ac9d83
SHA1cbb450016597875cd6616e62ec8f9a1acd4abb9a
SHA2567f35dc86053a85c2ffe7ef385ace63105cdff5fd1960be4169a72b66dcb9c2cb
SHA5126bfbb77e4050c65a74c97aefebd80bab1b61e9cad3332aa5dbe42ea8bd2c171012a9426e98e1b85e3f9ab0f48ef6501d44ef1b9318def2c994f4f26433b3ad09
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C:\Users\Admin\AppData\Local\system.exeFilesize
315KB
MD548366d3882cc2977b8875a8b858bc6ff
SHA165385b174612f30b090ee20074f656feb225478a
SHA2562a40346337677722c5d5edbc0a900f4c71e8f8fc3f74c311265719fdd02d4c09
SHA512e7a3dc85a288d4aaddcbb1b001eed71ecf91f341de93f7a77eab7e72efff8fbe77f7a3b3a1ba607ab7834004fc69da3c7e5db919074d14f02256d1d9365377dd