c09966a6b365f7c93e2bbb5a6c462691f10661329646c91434efbd31b2db99de

Resubmissions

07-03-2024 21:34

240307-1ezzlsee68 10

07-03-2024 21:00

240307-zta4csdh24 10

Analysis

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

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Reason

Machine shutdown

Report Analysis Logs

General

Target

Ransomware.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

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

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

Executes dropped EXE 1 IoCs

pid	Process
4628	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

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

pid	Process
3804	SCHTASKS.exe

Modifies data under HKEY_USERS 15 IoCs

description	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

description	pid	Process
Token: SeShutdownPrivilege	1620	shutdown.exe
Token: SeRemoteShutdownPrivilege	1620	shutdown.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
908	LogonUI.exe

Suspicious use of WriteProcessMemory 57 IoCs

description	pid	Process	procid_target
PID 684 wrote to memory of 4628	684	Ransomware.7ev3n.exe	92
PID 684 wrote to memory of 4628	684	Ransomware.7ev3n.exe	92
PID 684 wrote to memory of 4628	684	Ransomware.7ev3n.exe	92
PID 4628 wrote to memory of 4040	4628	system.exe	93
PID 4628 wrote to memory of 4040	4628	system.exe	93
PID 4628 wrote to memory of 4040	4628	system.exe	93
PID 4628 wrote to memory of 3804	4628	system.exe	94
PID 4628 wrote to memory of 3804	4628	system.exe	94
PID 4628 wrote to memory of 3804	4628	system.exe	94
PID 4628 wrote to memory of 5032	4628	system.exe	97
PID 4628 wrote to memory of 5032	4628	system.exe	97
PID 4628 wrote to memory of 5032	4628	system.exe	97
PID 4628 wrote to memory of 876	4628	system.exe	98
PID 4628 wrote to memory of 876	4628	system.exe	98
PID 4628 wrote to memory of 876	4628	system.exe	98
PID 4628 wrote to memory of 2716	4628	system.exe	99
PID 4628 wrote to memory of 2716	4628	system.exe	99
PID 4628 wrote to memory of 2716	4628	system.exe	99
PID 4628 wrote to memory of 2396	4628	system.exe	100
PID 4628 wrote to memory of 2396	4628	system.exe	100
PID 4628 wrote to memory of 2396	4628	system.exe	100
PID 4628 wrote to memory of 3224	4628	system.exe	101
PID 4628 wrote to memory of 3224	4628	system.exe	101
PID 4628 wrote to memory of 3224	4628	system.exe	101
PID 4628 wrote to memory of 4416	4628	system.exe	102
PID 4628 wrote to memory of 4416	4628	system.exe	102
PID 4628 wrote to memory of 4416	4628	system.exe	102
PID 876 wrote to memory of 3492	876	cmd.exe	109
PID 876 wrote to memory of 3492	876	cmd.exe	109
PID 876 wrote to memory of 3492	876	cmd.exe	109
PID 3224 wrote to memory of 4680	3224	cmd.exe	110
PID 3224 wrote to memory of 4680	3224	cmd.exe	110
PID 3224 wrote to memory of 4680	3224	cmd.exe	110
PID 4416 wrote to memory of 3680	4416	cmd.exe	111
PID 4416 wrote to memory of 3680	4416	cmd.exe	111
PID 4416 wrote to memory of 3680	4416	cmd.exe	111
PID 2716 wrote to memory of 3508	2716	cmd.exe	112
PID 2716 wrote to memory of 3508	2716	cmd.exe	112
PID 2716 wrote to memory of 3508	2716	cmd.exe	112
PID 5032 wrote to memory of 3988	5032	cmd.exe	113
PID 5032 wrote to memory of 3988	5032	cmd.exe	113
PID 5032 wrote to memory of 3988	5032	cmd.exe	113
PID 2396 wrote to memory of 64	2396	cmd.exe	114
PID 2396 wrote to memory of 64	2396	cmd.exe	114
PID 2396 wrote to memory of 64	2396	cmd.exe	114
PID 4628 wrote to memory of 3988	4628	system.exe	122
PID 4628 wrote to memory of 3988	4628	system.exe	122
PID 4628 wrote to memory of 3988	4628	system.exe	122
PID 3988 wrote to memory of 2960	3988	cmd.exe	124
PID 3988 wrote to memory of 2960	3988	cmd.exe	124
PID 3988 wrote to memory of 2960	3988	cmd.exe	124
PID 4628 wrote to memory of 4108	4628	system.exe	125
PID 4628 wrote to memory of 4108	4628	system.exe	125
PID 4628 wrote to memory of 4108	4628	system.exe	125
PID 4108 wrote to memory of 1620	4108	cmd.exe	127
PID 4108 wrote to memory of 1620	4108	cmd.exe	127
PID 4108 wrote to memory of 1620	4108	cmd.exe	127

C:\Users\Admin\AppData\Local\Temp\Ransomware.7ev3n.exe
"C:\Users\Admin\AppData\Local\Temp\Ransomware.7ev3n.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:684
- C:\Users\Admin\AppData\Local\system.exe
  "C:\Users\Admin\AppData\Local\system.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:4628
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\del.bat
    3⤵
    PID:4040
- - 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:3804
- - 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:5032
  - - 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:3988
- - 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⤵
    - Suspicious use of WriteProcessMemory
    PID:876
  - - 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:3492
- - 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:2716
  - - 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:3508
- - 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:2396
  - - 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:64
- - 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:3224
  - - 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:4680
- - 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:4416
  - - 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:3680
- - 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:3988
  - - 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:2960
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c shutdown -r -t 10 -f
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4108
  - - C:\Windows\SysWOW64\shutdown.exe
      shutdown -r -t 10 -f
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:1620

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x4 /state0:0xa3948855 /state1:0x41c64e6d
1⤵
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:908

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

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

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\del.bat

Filesize
76B

MD5
bd6cd262cc5cccb49b23151fd6ac9d83

SHA1
cbb450016597875cd6616e62ec8f9a1acd4abb9a

SHA256
7f35dc86053a85c2ffe7ef385ace63105cdff5fd1960be4169a72b66dcb9c2cb

SHA512
6bfbb77e4050c65a74c97aefebd80bab1b61e9cad3332aa5dbe42ea8bd2c171012a9426e98e1b85e3f9ab0f48ef6501d44ef1b9318def2c994f4f26433b3ad09

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C:\Users\Admin\AppData\Local\system.exe

Filesize
315KB

MD5
48366d3882cc2977b8875a8b858bc6ff

SHA1
65385b174612f30b090ee20074f656feb225478a

SHA256
2a40346337677722c5d5edbc0a900f4c71e8f8fc3f74c311265719fdd02d4c09

SHA512
e7a3dc85a288d4aaddcbb1b001eed71ecf91f341de93f7a77eab7e72efff8fbe77f7a3b3a1ba607ab7834004fc69da3c7e5db919074d14f02256d1d9365377dd

Download Submit

Resubmissions

Analysis

Sharing

Errors

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads