c6a916c33096cd488ca57c28863c433cf5279128aa50ea156761bab6444f4937

Analysis

max time kernel
27s
max time network
31s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
24-02-2024 11:28

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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

Deletes itself 1 IoCs

pid	Process
2828	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
3024	system.exe

Loads dropped DLL 2 IoCs

pid	Process
1972	Ransomware.7ev3n.exe
1972	Ransomware.7ev3n.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
2556	SCHTASKS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeShutdownPrivilege	1076	shutdown.exe
Token: SeRemoteShutdownPrivilege	1076	shutdown.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 1972 wrote to memory of 3024	1972	Ransomware.7ev3n.exe	28
PID 1972 wrote to memory of 3024	1972	Ransomware.7ev3n.exe	28
PID 1972 wrote to memory of 3024	1972	Ransomware.7ev3n.exe	28
PID 1972 wrote to memory of 3024	1972	Ransomware.7ev3n.exe	28
PID 3024 wrote to memory of 2828	3024	system.exe	29
PID 3024 wrote to memory of 2828	3024	system.exe	29
PID 3024 wrote to memory of 2828	3024	system.exe	29
PID 3024 wrote to memory of 2828	3024	system.exe	29
PID 3024 wrote to memory of 2556	3024	system.exe	30
PID 3024 wrote to memory of 2556	3024	system.exe	30
PID 3024 wrote to memory of 2556	3024	system.exe	30
PID 3024 wrote to memory of 2556	3024	system.exe	30
PID 3024 wrote to memory of 2688	3024	system.exe	33
PID 3024 wrote to memory of 2688	3024	system.exe	33
PID 3024 wrote to memory of 2688	3024	system.exe	33
PID 3024 wrote to memory of 2688	3024	system.exe	33
PID 3024 wrote to memory of 2708	3024	system.exe	34
PID 3024 wrote to memory of 2708	3024	system.exe	34
PID 3024 wrote to memory of 2708	3024	system.exe	34
PID 3024 wrote to memory of 2708	3024	system.exe	34
PID 3024 wrote to memory of 2436	3024	system.exe	37
PID 3024 wrote to memory of 2436	3024	system.exe	37
PID 3024 wrote to memory of 2436	3024	system.exe	37
PID 3024 wrote to memory of 2436	3024	system.exe	37
PID 3024 wrote to memory of 2792	3024	system.exe	38
PID 3024 wrote to memory of 2792	3024	system.exe	38
PID 3024 wrote to memory of 2792	3024	system.exe	38
PID 3024 wrote to memory of 2792	3024	system.exe	38
PID 3024 wrote to memory of 2712	3024	system.exe	39
PID 3024 wrote to memory of 2712	3024	system.exe	39
PID 3024 wrote to memory of 2712	3024	system.exe	39
PID 3024 wrote to memory of 2712	3024	system.exe	39
PID 3024 wrote to memory of 2404	3024	system.exe	47
PID 3024 wrote to memory of 2404	3024	system.exe	47
PID 3024 wrote to memory of 2404	3024	system.exe	47
PID 3024 wrote to memory of 2404	3024	system.exe	47
PID 2688 wrote to memory of 2916	2688	cmd.exe	42
PID 2688 wrote to memory of 2916	2688	cmd.exe	42
PID 2688 wrote to memory of 2916	2688	cmd.exe	42
PID 2688 wrote to memory of 2916	2688	cmd.exe	42
PID 2708 wrote to memory of 2460	2708	cmd.exe	41
PID 2708 wrote to memory of 2460	2708	cmd.exe	41
PID 2708 wrote to memory of 2460	2708	cmd.exe	41
PID 2708 wrote to memory of 2460	2708	cmd.exe	41
PID 2436 wrote to memory of 1820	2436	cmd.exe	43
PID 2436 wrote to memory of 1820	2436	cmd.exe	43
PID 2436 wrote to memory of 1820	2436	cmd.exe	43
PID 2436 wrote to memory of 1820	2436	cmd.exe	43
PID 2712 wrote to memory of 2664	2712	cmd.exe	44
PID 2712 wrote to memory of 2664	2712	cmd.exe	44
PID 2712 wrote to memory of 2664	2712	cmd.exe	44
PID 2712 wrote to memory of 2664	2712	cmd.exe	44
PID 2792 wrote to memory of 2660	2792	cmd.exe	49
PID 2792 wrote to memory of 2660	2792	cmd.exe	49
PID 2792 wrote to memory of 2660	2792	cmd.exe	49
PID 2792 wrote to memory of 2660	2792	cmd.exe	49
PID 2404 wrote to memory of 2676	2404	cmd.exe	50
PID 2404 wrote to memory of 2676	2404	cmd.exe	50
PID 2404 wrote to memory of 2676	2404	cmd.exe	50
PID 2404 wrote to memory of 2676	2404	cmd.exe	50
PID 3024 wrote to memory of 596	3024	system.exe	53
PID 3024 wrote to memory of 596	3024	system.exe	53
PID 3024 wrote to memory of 596	3024	system.exe	53
PID 3024 wrote to memory of 596	3024	system.exe	53

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
PID:1972
- C:\Users\Admin\AppData\Local\system.exe
  "C:\Users\Admin\AppData\Local\system.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:3024
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c C:\Users\Admin\AppData\Local\del.bat
    3⤵
    - Deletes itself
    PID:2828
- - 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:2556
- - 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:2688
  - - 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:2916
- - 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:2708
  - - 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:2460
- - 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:2436
  - - 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:1820
- - 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:2792
  - - 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:2660
- - 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:2712
  - - 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:2664
- - 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:2404
  - - 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:2676
- - 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⤵
    PID:596
  - - 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:488
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c shutdown -r -t 10 -f
    3⤵
    PID:1016
  - - C:\Windows\SysWOW64\shutdown.exe
      shutdown -r -t 10 -f
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:1076

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x0
1⤵
PID:2012

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x1
1⤵
PID:1232

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

Download Submit
\Users\Admin\AppData\Local\system.exe

Filesize
315KB

MD5
960210c40a73291e4349cb16c26afc66

SHA1
e90335ab561ca12801b22e15446c84f90ab53588

SHA256
fef8a83f4105221a01de09749072671b2c6c944a5d52c15d0852cc9a4b6c4890

SHA512
44a42cc7a5baab876e3a7fce4d9d05839de666577306985d8d5920f38f0150ce335c351eaa4d8f834b43abfcb26eb3aa06fbb467dc56695eacd35ad11d8a259a

Download Submit
memory/1232-103-0x0000000002B30000-0x0000000002B31000-memory.dmp

Filesize
4KB

Download
memory/2012-102-0x0000000002E80000-0x0000000002E81000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

Errors

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads