2eaccf2ffad0c83282b940b5ed1e65f38acacc9e002b48e3bf4f852e1097232a

Analysis

max time kernel
76s
max time network
89s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
17-03-2024 04:49

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Reason

Machine shutdown

Report Analysis Logs

General

Target

ransomwares/7ev3n/7ev3n.exe
Size

315KB
MD5

9f8bc96c96d43ecb69f883388d228754
SHA1

61ed25a706afa2f6684bb4d64f69c5fb29d20953
SHA256

7d373ccb96d1dbb1856ef31afa87c2112a0c1795a796ab01cb154700288afec5
SHA512

550a891c1059f58aa983138caf65a7ea9c326cb1b94c15f3e7594128f6e9f1295b9c2dbc0925637dba7c94e938083fffc6a63dc7c2e5b1e247679931cce505c6
SSDEEP

6144:BswDdb2MemnBVlz0SoVbO4A6OA4Trl28TyT6llY1/I8cWJWlfTXv:BswRSslz0P1OdFXJlJ8buXv

Score

10^/10

evasion persistence trojan

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

Processes:

reg.exe

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
evasion trojan

Bypass User Account Control
T1548.002

Disable or Modify Tools
T1562.001

Modify Registry
T1112

Processes:

reg.exe

description ioc process

Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" reg.exe
Executes dropped EXE 1 IoCs

Processes:

system.exe

pid process

3292 system.exe

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

pid	process
3292	system.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

reg.exe

description	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.
persistence

Scheduled Task/Job
T1053

Processes:

SCHTASKS.exe

pid process

4524 SCHTASKS.exe

pid	process
4524	SCHTASKS.exe

Modifies data under HKEY_USERS 15 IoCs

Processes:

LogonUI.exe

description	ioc	process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM	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\ColorizationBlurBalance = "1"	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
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
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 = "221"	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\DWM\ColorizationColorBalance = "89"	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\AccentColor = "4292311040"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColor = "3288365271"	LogonUI.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

shutdown.exe

description pid process

Token: SeShutdownPrivilege 4944 shutdown.exe
Token: SeRemoteShutdownPrivilege 4944 shutdown.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

LogonUI.exe

pid process

2972 LogonUI.exe

description	pid	process
Token: SeShutdownPrivilege	4944	shutdown.exe
Token: SeRemoteShutdownPrivilege	4944	shutdown.exe

pid	process
2972	LogonUI.exe

Suspicious use of WriteProcessMemory 54 IoCs

Processes:

7ev3n.exesystem.execmd.execmd.execmd.execmd.execmd.execmd.execmd.exe

description	pid	process	target process
PID 1796 wrote to memory of 3292	1796	7ev3n.exe	system.exe
PID 1796 wrote to memory of 3292	1796	7ev3n.exe	system.exe
PID 1796 wrote to memory of 3292	1796	7ev3n.exe	system.exe
PID 3292 wrote to memory of 4940	3292	system.exe	cmd.exe
PID 3292 wrote to memory of 4940	3292	system.exe	cmd.exe
PID 3292 wrote to memory of 4940	3292	system.exe	cmd.exe
PID 3292 wrote to memory of 4524	3292	system.exe	SCHTASKS.exe
PID 3292 wrote to memory of 4524	3292	system.exe	SCHTASKS.exe
PID 3292 wrote to memory of 4524	3292	system.exe	SCHTASKS.exe
PID 3292 wrote to memory of 212	3292	system.exe	cmd.exe
PID 3292 wrote to memory of 212	3292	system.exe	cmd.exe
PID 3292 wrote to memory of 212	3292	system.exe	cmd.exe
PID 3292 wrote to memory of 2116	3292	system.exe	cmd.exe
PID 3292 wrote to memory of 2116	3292	system.exe	cmd.exe
PID 3292 wrote to memory of 2116	3292	system.exe	cmd.exe
PID 3292 wrote to memory of 4392	3292	system.exe	cmd.exe
PID 3292 wrote to memory of 4392	3292	system.exe	cmd.exe
PID 3292 wrote to memory of 4392	3292	system.exe	cmd.exe
PID 3292 wrote to memory of 4420	3292	system.exe	cmd.exe
PID 3292 wrote to memory of 4420	3292	system.exe	cmd.exe
PID 3292 wrote to memory of 4420	3292	system.exe	cmd.exe
PID 3292 wrote to memory of 1156	3292	system.exe	cmd.exe
PID 3292 wrote to memory of 1156	3292	system.exe	cmd.exe
PID 3292 wrote to memory of 1156	3292	system.exe	cmd.exe
PID 3292 wrote to memory of 748	3292	system.exe	cmd.exe
PID 3292 wrote to memory of 748	3292	system.exe	cmd.exe
PID 3292 wrote to memory of 748	3292	system.exe	cmd.exe
PID 748 wrote to memory of 4444	748	cmd.exe	reg.exe
PID 748 wrote to memory of 4444	748	cmd.exe	reg.exe
PID 748 wrote to memory of 4444	748	cmd.exe	reg.exe
PID 4392 wrote to memory of 2280	4392	cmd.exe	reg.exe
PID 4392 wrote to memory of 2280	4392	cmd.exe	reg.exe
PID 4392 wrote to memory of 2280	4392	cmd.exe	reg.exe
PID 1156 wrote to memory of 1788	1156	cmd.exe	reg.exe
PID 1156 wrote to memory of 1788	1156	cmd.exe	reg.exe
PID 1156 wrote to memory of 1788	1156	cmd.exe	reg.exe
PID 212 wrote to memory of 3932	212	cmd.exe	reg.exe
PID 212 wrote to memory of 3932	212	cmd.exe	reg.exe
PID 212 wrote to memory of 3932	212	cmd.exe	reg.exe
PID 4420 wrote to memory of 2744	4420	cmd.exe	reg.exe
PID 4420 wrote to memory of 2744	4420	cmd.exe	reg.exe
PID 4420 wrote to memory of 2744	4420	cmd.exe	reg.exe
PID 3292 wrote to memory of 2736	3292	system.exe	cmd.exe
PID 3292 wrote to memory of 2736	3292	system.exe	cmd.exe
PID 3292 wrote to memory of 2736	3292	system.exe	cmd.exe
PID 2736 wrote to memory of 4824	2736	cmd.exe	reg.exe
PID 2736 wrote to memory of 4824	2736	cmd.exe	reg.exe
PID 2736 wrote to memory of 4824	2736	cmd.exe	reg.exe
PID 3292 wrote to memory of 4172	3292	system.exe	cmd.exe
PID 3292 wrote to memory of 4172	3292	system.exe	cmd.exe
PID 3292 wrote to memory of 4172	3292	system.exe	cmd.exe
PID 4172 wrote to memory of 4944	4172	cmd.exe	shutdown.exe
PID 4172 wrote to memory of 4944	4172	cmd.exe	shutdown.exe
PID 4172 wrote to memory of 4944	4172	cmd.exe	shutdown.exe

C:\Users\Admin\AppData\Local\Temp\ransomwares\7ev3n\7ev3n.exe
"C:\Users\Admin\AppData\Local\Temp\ransomwares\7ev3n\7ev3n.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1796

C:\Users\Admin\AppData\Local\system.exe
"C:\Users\Admin\AppData\Local\system.exe"
2⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:3292

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\del.bat
3⤵
PID:4940

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⤵
- Creates scheduled task(s)
PID:4524

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⤵
- Suspicious use of WriteProcessMemory
PID:212

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
PID:3932

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⤵
PID:2116

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
PID:3956

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⤵
- Suspicious use of WriteProcessMemory
PID:4392

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⤵
PID:2280

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⤵
- Suspicious use of WriteProcessMemory
PID:4420

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⤵
PID:2744

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⤵
- Suspicious use of WriteProcessMemory
PID:1156

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⤵
PID:1788

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⤵
- Suspicious use of WriteProcessMemory
PID:748

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
PID:4444

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⤵
- Suspicious use of WriteProcessMemory
PID:2736

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⤵
PID:4824

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c shutdown -r -t 10 -f
3⤵
- Suspicious use of WriteProcessMemory
PID:4172

C:\Windows\SysWOW64\shutdown.exe
shutdown -r -t 10 -f
4⤵
- Suspicious use of AdjustPrivilegeToken
PID:4944

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1408 --field-trial-handle=2276,i,5697607538120380977,9987005253899555344,262144 --variations-seed-version /prefetch:8
1⤵
PID:2468

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x4 /state0:0xa39bc855 /state1:0x41c64e6d
1⤵
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:2972

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Scheduled Task/Job

T1053

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Scheduled Task/Job

T1053

Defense Evasion

Modify Registry

T1112

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\del.bat
Filesize
83B

MD5
c845363aae0b9f8f4c33759ac4610840

SHA1
fa0d93ee743416cf7f6bd39d888973c36e64cb44

SHA256
09968bc0c94979ff041838aea1119727122e3e33c7558c135e3f6ba8e4de62eb

SHA512
550fe7d835ab46421b4b20e1425330ce43c7cacc72f7cff657a956cbd2aacc48c3e40d8fa84262e6b5af5205853662cc69202da277ccb807b4acf87196383d14

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C:\Users\Admin\AppData\Local\system.exe
Filesize
315KB

MD5
7ee101b66aa78da4faf50fa802db2494

SHA1
839d7d818802db949ec3e6dd1b79d7f6066e6c61

SHA256
ea8d762f5a481d6c62f9cf31da7b1d9a97bdc70911f76db395abc2aa008c8167

SHA512
f623e399dc07dc03818206663550b313a72d06ba7059b7a64b06add7661851d1c17edda9e36c8314b6a499530a296ac044efa07d38834edab0d5c2f7a1820963

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Analysis

Sharing

Errors

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads