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
29s -
max time network
30s -
platform
windows7_x64 -
resource
win7-20240215-en -
resource tags
arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-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 -
Deletes itself 1 IoCs
Processes:
cmd.exepid process 2688 cmd.exe -
Executes dropped EXE 1 IoCs
Processes:
system.exepid process 2544 system.exe -
Loads dropped DLL 2 IoCs
Processes:
Ransomware.7ev3n.exepid process 2740 Ransomware.7ev3n.exe 2740 Ransomware.7ev3n.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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Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
shutdown.exedescription pid process Token: SeShutdownPrivilege 1400 shutdown.exe Token: SeRemoteShutdownPrivilege 1400 shutdown.exe -
Suspicious use of WriteProcessMemory 64 IoCs
Processes:
Ransomware.7ev3n.exesystem.execmd.execmd.execmd.execmd.execmd.execmd.exedescription pid process target process PID 2740 wrote to memory of 2544 2740 Ransomware.7ev3n.exe system.exe PID 2740 wrote to memory of 2544 2740 Ransomware.7ev3n.exe system.exe PID 2740 wrote to memory of 2544 2740 Ransomware.7ev3n.exe system.exe PID 2740 wrote to memory of 2544 2740 Ransomware.7ev3n.exe system.exe PID 2544 wrote to memory of 2688 2544 system.exe cmd.exe PID 2544 wrote to memory of 2688 2544 system.exe cmd.exe PID 2544 wrote to memory of 2688 2544 system.exe cmd.exe PID 2544 wrote to memory of 2688 2544 system.exe cmd.exe PID 2544 wrote to memory of 2604 2544 system.exe SCHTASKS.exe PID 2544 wrote to memory of 2604 2544 system.exe SCHTASKS.exe PID 2544 wrote to memory of 2604 2544 system.exe SCHTASKS.exe PID 2544 wrote to memory of 2604 2544 system.exe SCHTASKS.exe PID 2544 wrote to memory of 1280 2544 system.exe cmd.exe PID 2544 wrote to memory of 1280 2544 system.exe cmd.exe PID 2544 wrote to memory of 1280 2544 system.exe cmd.exe PID 2544 wrote to memory of 1280 2544 system.exe cmd.exe PID 2544 wrote to memory of 2800 2544 system.exe cmd.exe PID 2544 wrote to memory of 2800 2544 system.exe cmd.exe PID 2544 wrote to memory of 2800 2544 system.exe cmd.exe PID 2544 wrote to memory of 2800 2544 system.exe cmd.exe PID 2544 wrote to memory of 2612 2544 system.exe cmd.exe PID 2544 wrote to memory of 2612 2544 system.exe cmd.exe PID 2544 wrote to memory of 2612 2544 system.exe cmd.exe PID 2544 wrote to memory of 2612 2544 system.exe cmd.exe PID 2544 wrote to memory of 2484 2544 system.exe cmd.exe PID 2544 wrote to memory of 2484 2544 system.exe cmd.exe PID 2544 wrote to memory of 2484 2544 system.exe cmd.exe PID 2544 wrote to memory of 2484 2544 system.exe cmd.exe PID 2544 wrote to memory of 2764 2544 system.exe cmd.exe PID 2544 wrote to memory of 2764 2544 system.exe cmd.exe PID 2544 wrote to memory of 2764 2544 system.exe cmd.exe PID 2544 wrote to memory of 2764 2544 system.exe cmd.exe PID 2544 wrote to memory of 2148 2544 system.exe cmd.exe PID 2544 wrote to memory of 2148 2544 system.exe cmd.exe PID 2544 wrote to memory of 2148 2544 system.exe cmd.exe PID 2544 wrote to memory of 2148 2544 system.exe cmd.exe PID 1280 wrote to memory of 2464 1280 cmd.exe reg.exe PID 1280 wrote to memory of 2464 1280 cmd.exe reg.exe PID 1280 wrote to memory of 2464 1280 cmd.exe reg.exe PID 1280 wrote to memory of 2464 1280 cmd.exe reg.exe PID 2800 wrote to memory of 2524 2800 cmd.exe reg.exe PID 2800 wrote to memory of 2524 2800 cmd.exe reg.exe PID 2800 wrote to memory of 2524 2800 cmd.exe reg.exe PID 2800 wrote to memory of 2524 2800 cmd.exe reg.exe PID 2612 wrote to memory of 2572 2612 cmd.exe reg.exe PID 2612 wrote to memory of 2572 2612 cmd.exe reg.exe PID 2612 wrote to memory of 2572 2612 cmd.exe reg.exe PID 2612 wrote to memory of 2572 2612 cmd.exe reg.exe PID 2484 wrote to memory of 2876 2484 cmd.exe reg.exe PID 2484 wrote to memory of 2876 2484 cmd.exe reg.exe PID 2484 wrote to memory of 2876 2484 cmd.exe reg.exe PID 2484 wrote to memory of 2876 2484 cmd.exe reg.exe PID 2148 wrote to memory of 1260 2148 cmd.exe reg.exe PID 2148 wrote to memory of 1260 2148 cmd.exe reg.exe PID 2148 wrote to memory of 1260 2148 cmd.exe reg.exe PID 2148 wrote to memory of 1260 2148 cmd.exe reg.exe PID 2764 wrote to memory of 1992 2764 cmd.exe reg.exe PID 2764 wrote to memory of 1992 2764 cmd.exe reg.exe PID 2764 wrote to memory of 1992 2764 cmd.exe reg.exe PID 2764 wrote to memory of 1992 2764 cmd.exe reg.exe PID 2544 wrote to memory of 628 2544 system.exe cmd.exe PID 2544 wrote to memory of 628 2544 system.exe cmd.exe PID 2544 wrote to memory of 628 2544 system.exe cmd.exe PID 2544 wrote to memory of 628 2544 system.exe cmd.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⤵
- Loads dropped DLL
- 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.execmd /c C:\Users\Admin\AppData\Local\del.bat3⤵
- Deletes itself
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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⤵
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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⤵
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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:0x01⤵
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C:\Windows\system32\LogonUI.exe"LogonUI.exe" /flags:0x11⤵
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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\Users\Admin\AppData\Local\system.exeFilesize
315KB
MD5960210c40a73291e4349cb16c26afc66
SHA1e90335ab561ca12801b22e15446c84f90ab53588
SHA256fef8a83f4105221a01de09749072671b2c6c944a5d52c15d0852cc9a4b6c4890
SHA51244a42cc7a5baab876e3a7fce4d9d05839de666577306985d8d5920f38f0150ce335c351eaa4d8f834b43abfcb26eb3aa06fbb467dc56695eacd35ad11d8a259a
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memory/2428-115-0x0000000002B80000-0x0000000002B81000-memory.dmpFilesize
4KB
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memory/3048-114-0x0000000002E10000-0x0000000002E11000-memory.dmpFilesize
4KB