c6a916c33096cd488ca57c28863c433cf5279128aa50ea156761bab6444f4937

Resubmissions

24-02-2024 15:44

240224-s6pzqafh53 10

24-02-2024 14:06

240224-relmjsdh45 10

24-02-2024 11:48

240224-nyvssabe4w 3

Analysis

max time kernel
26s
max time network
31s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
24-02-2024 15:44

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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
3836	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
1548	SCHTASKS.exe

Modifies data under HKEY_USERS 15 IoCs

description	ioc	Process
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\ColorizationColor = "3288365271"	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\EnableWindowColorization = "97"	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\ColorizationBlurBalance = "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
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\AccentColor = "4292311040"	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\ColorizationGlassAttribute = "1"	LogonUI.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeShutdownPrivilege	5112	shutdown.exe
Token: SeRemoteShutdownPrivilege	5112	shutdown.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4368	LogonUI.exe

Suspicious use of WriteProcessMemory 57 IoCs

description	pid	Process	procid_target
PID 3576 wrote to memory of 3836	3576	Ransomware.7ev3n.exe	88
PID 3576 wrote to memory of 3836	3576	Ransomware.7ev3n.exe	88
PID 3576 wrote to memory of 3836	3576	Ransomware.7ev3n.exe	88
PID 3836 wrote to memory of 1972	3836	system.exe	89
PID 3836 wrote to memory of 1972	3836	system.exe	89
PID 3836 wrote to memory of 1972	3836	system.exe	89
PID 3836 wrote to memory of 1548	3836	system.exe	91
PID 3836 wrote to memory of 1548	3836	system.exe	91
PID 3836 wrote to memory of 1548	3836	system.exe	91
PID 3836 wrote to memory of 3244	3836	system.exe	95
PID 3836 wrote to memory of 3244	3836	system.exe	95
PID 3836 wrote to memory of 3244	3836	system.exe	95
PID 3836 wrote to memory of 1564	3836	system.exe	101
PID 3836 wrote to memory of 1564	3836	system.exe	101
PID 3836 wrote to memory of 1564	3836	system.exe	101
PID 3836 wrote to memory of 2448	3836	system.exe	100
PID 3836 wrote to memory of 2448	3836	system.exe	100
PID 3836 wrote to memory of 2448	3836	system.exe	100
PID 3836 wrote to memory of 1916	3836	system.exe	99
PID 3836 wrote to memory of 1916	3836	system.exe	99
PID 3836 wrote to memory of 1916	3836	system.exe	99
PID 3836 wrote to memory of 2668	3836	system.exe	98
PID 3836 wrote to memory of 2668	3836	system.exe	98
PID 3836 wrote to memory of 2668	3836	system.exe	98
PID 3836 wrote to memory of 4472	3836	system.exe	97
PID 3836 wrote to memory of 4472	3836	system.exe	97
PID 3836 wrote to memory of 4472	3836	system.exe	97
PID 3244 wrote to memory of 4276	3244	cmd.exe	107
PID 3244 wrote to memory of 4276	3244	cmd.exe	107
PID 3244 wrote to memory of 4276	3244	cmd.exe	107
PID 1564 wrote to memory of 3208	1564	cmd.exe	108
PID 1564 wrote to memory of 3208	1564	cmd.exe	108
PID 1564 wrote to memory of 3208	1564	cmd.exe	108
PID 1916 wrote to memory of 1040	1916	cmd.exe	111
PID 2668 wrote to memory of 4436	2668	cmd.exe	110
PID 2668 wrote to memory of 4436	2668	cmd.exe	110
PID 2668 wrote to memory of 4436	2668	cmd.exe	110
PID 1916 wrote to memory of 1040	1916	cmd.exe	111
PID 1916 wrote to memory of 1040	1916	cmd.exe	111
PID 4472 wrote to memory of 1796	4472	cmd.exe	109
PID 4472 wrote to memory of 1796	4472	cmd.exe	109
PID 4472 wrote to memory of 1796	4472	cmd.exe	109
PID 2448 wrote to memory of 5108	2448	cmd.exe	112
PID 2448 wrote to memory of 5108	2448	cmd.exe	112
PID 2448 wrote to memory of 5108	2448	cmd.exe	112
PID 3836 wrote to memory of 880	3836	system.exe	114
PID 3836 wrote to memory of 880	3836	system.exe	114
PID 3836 wrote to memory of 880	3836	system.exe	114
PID 880 wrote to memory of 3384	880	cmd.exe	116
PID 880 wrote to memory of 3384	880	cmd.exe	116
PID 880 wrote to memory of 3384	880	cmd.exe	116
PID 3836 wrote to memory of 3624	3836	system.exe	117
PID 3836 wrote to memory of 3624	3836	system.exe	117
PID 3836 wrote to memory of 3624	3836	system.exe	117
PID 3624 wrote to memory of 5112	3624	cmd.exe	119
PID 3624 wrote to memory of 5112	3624	cmd.exe	119
PID 3624 wrote to memory of 5112	3624	cmd.exe	119

C:\Users\Admin\AppData\Local\Temp\Ransomware.7ev3n.exe
"C:\Users\Admin\AppData\Local\Temp\Ransomware.7ev3n.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3576
- C:\Users\Admin\AppData\Local\system.exe
  "C:\Users\Admin\AppData\Local\system.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:3836
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\del.bat
    3⤵
    PID:1972
- - 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:1548
- - 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:3244
  - - 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:4276
- - 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:4472
  - - 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:1796
- - 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:2668
  - - 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:4436
- - 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:1916
  - - 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:1040
- - 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:2448
  - - 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:5108
- - 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:1564
  - - 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:3208
- - 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:880
  - - 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:3384
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c shutdown -r -t 10 -f
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3624
  - - C:\Windows\SysWOW64\shutdown.exe
      shutdown -r -t 10 -f
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:5112

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x4 /state0:0xa394b855 /state1:0x41c64e6d
1⤵
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:4368

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
90d9f15072bcd2228bca64f29252852d

SHA1
f144e48e228275172eb6c4c01958a9557f7cd2fa

SHA256
7b1a257df5e92baa4742fc667ca79799ef8fffd5e52b9522b3bc1413e57242b4

SHA512
3f5cd820e8dd456cebd99bfca9234b5c735a434069cc4df0a390a6c72c45306c85dc3f4c3d093f998f65cd5fbea2a6c1ea03659bb184a796206d50eb4e4e9b0a

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Resubmissions

Analysis

Sharing

Errors

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads