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
24s -
max time network
26s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
09-03-2024 01:16
Static task
static1
Behavioral task
behavioral1
Sample
Ransomware.7ev3n.exe
Resource
win7-20240221-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
win7-20240221-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 3236 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\CurrentVersion\Explorer\Accent\AccentColorMenu = "4292311040" LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\EnableWindowColorization = "125" LogonUI.exe Set value (data) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentPalette = a6d8ff0076b9ed00429ce3000078d700005a9e000042750000264200f7630c00 LogonUI.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History 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 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History\AutoColor = "0" 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\ColorizationGlassAttribute = "1" 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 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglow = "3288365271" 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\DWM\AccentColor = "4292311040" LogonUI.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
shutdown.exedescription pid process Token: SeShutdownPrivilege 1636 shutdown.exe Token: SeRemoteShutdownPrivilege 1636 shutdown.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
LogonUI.exepid process 4316 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 4296 wrote to memory of 3236 4296 Ransomware.7ev3n.exe system.exe PID 4296 wrote to memory of 3236 4296 Ransomware.7ev3n.exe system.exe PID 4296 wrote to memory of 3236 4296 Ransomware.7ev3n.exe system.exe PID 3236 wrote to memory of 832 3236 system.exe cmd.exe PID 3236 wrote to memory of 832 3236 system.exe cmd.exe PID 3236 wrote to memory of 832 3236 system.exe cmd.exe PID 3236 wrote to memory of 2796 3236 system.exe SCHTASKS.exe PID 3236 wrote to memory of 2796 3236 system.exe SCHTASKS.exe PID 3236 wrote to memory of 2796 3236 system.exe SCHTASKS.exe PID 3236 wrote to memory of 3580 3236 system.exe cmd.exe PID 3236 wrote to memory of 3580 3236 system.exe cmd.exe PID 3236 wrote to memory of 3580 3236 system.exe cmd.exe PID 3236 wrote to memory of 2208 3236 system.exe cmd.exe PID 3236 wrote to memory of 2208 3236 system.exe cmd.exe PID 3236 wrote to memory of 2208 3236 system.exe cmd.exe PID 3236 wrote to memory of 4264 3236 system.exe cmd.exe PID 3236 wrote to memory of 4264 3236 system.exe cmd.exe PID 3236 wrote to memory of 4264 3236 system.exe cmd.exe PID 3236 wrote to memory of 3848 3236 system.exe cmd.exe PID 3236 wrote to memory of 3848 3236 system.exe cmd.exe PID 3236 wrote to memory of 3848 3236 system.exe cmd.exe PID 3236 wrote to memory of 2520 3236 system.exe cmd.exe PID 3236 wrote to memory of 2520 3236 system.exe cmd.exe PID 3236 wrote to memory of 2520 3236 system.exe cmd.exe PID 3236 wrote to memory of 2248 3236 system.exe cmd.exe PID 3236 wrote to memory of 2248 3236 system.exe cmd.exe PID 3236 wrote to memory of 2248 3236 system.exe cmd.exe PID 4264 wrote to memory of 1260 4264 cmd.exe reg.exe PID 4264 wrote to memory of 1260 4264 cmd.exe reg.exe PID 4264 wrote to memory of 1260 4264 cmd.exe reg.exe PID 3580 wrote to memory of 4872 3580 cmd.exe reg.exe PID 3580 wrote to memory of 4872 3580 cmd.exe reg.exe PID 3580 wrote to memory of 4872 3580 cmd.exe reg.exe PID 3848 wrote to memory of 2040 3848 cmd.exe reg.exe PID 3848 wrote to memory of 2040 3848 cmd.exe reg.exe PID 3848 wrote to memory of 2040 3848 cmd.exe reg.exe PID 2248 wrote to memory of 3732 2248 cmd.exe reg.exe PID 2248 wrote to memory of 3732 2248 cmd.exe reg.exe PID 2248 wrote to memory of 3732 2248 cmd.exe reg.exe PID 2520 wrote to memory of 3344 2520 cmd.exe reg.exe PID 2520 wrote to memory of 3344 2520 cmd.exe reg.exe PID 2520 wrote to memory of 3344 2520 cmd.exe reg.exe PID 2208 wrote to memory of 3324 2208 cmd.exe reg.exe PID 2208 wrote to memory of 3324 2208 cmd.exe reg.exe PID 2208 wrote to memory of 3324 2208 cmd.exe reg.exe PID 3236 wrote to memory of 452 3236 system.exe cmd.exe PID 3236 wrote to memory of 452 3236 system.exe cmd.exe PID 3236 wrote to memory of 452 3236 system.exe cmd.exe PID 452 wrote to memory of 696 452 cmd.exe reg.exe PID 452 wrote to memory of 696 452 cmd.exe reg.exe PID 452 wrote to memory of 696 452 cmd.exe reg.exe PID 3236 wrote to memory of 1876 3236 system.exe cmd.exe PID 3236 wrote to memory of 1876 3236 system.exe cmd.exe PID 3236 wrote to memory of 1876 3236 system.exe cmd.exe PID 1876 wrote to memory of 1636 1876 cmd.exe shutdown.exe PID 1876 wrote to memory of 1636 1876 cmd.exe shutdown.exe PID 1876 wrote to memory of 1636 1876 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 /state0:0xa395f855 /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
MD55030807b78c82a1d320d03abb33eb6c8
SHA14da77062bfb2068c353de1bff38c9e16632952f6
SHA25682dd20f49584477101b253a09465f6cc7d675f77ba9a92d1116ea7e3ba2343d4
SHA512bf6434e8343972d3aa896879555c1fe664e6d96e6c37685928ebfac7960312fc7ca5716eaefaaa43283edf749ef484f71fa1a0d4cc2f612bf9c6c2bb65cdccf4