91697fa6d5e1a59f0c71e7ae0f2a8928879a8522901153708d09bfe430bfa7cb

Reason

Machine shutdown

General

Target
02ae530ebb33ee8528ac0b9061d41216d3f3d4dcd8e9b0fe7f7cd0511247b7df.exe
Size 54KB
Sample201108-54wxtbps2j
SHA256 02ae530ebb33ee8528ac0b9061d41216d3f3d4dcd8e9b0fe7f7cd0511247b7df
MD5 cdb6e431b4eeb2909b1cf198f70ae444
SHA1 98205803babd17587e99913934eb6975c3dc8779
SHA512 c24c5b4c3d1b9355db8e82aa3c1c228e12b107c2f2ad76ac5e1ec62dda516cbe2237b1839547ff80e9059a3f2debc1cf07daf30dc3dad2b579aa4eddb9ba33a0
MD5 SHA1 SHA512

Score

8^/10

bootkit persistence ransomware

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2076	EyeCry.exe

Modifies WinLogon to allow AutoLogon 2 TTPs 1 IoCs

Enables rebooting of the machine without requiring login credentials.

ransomware bootkit

Winlogon Helper DLL

T1004

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\AutoLogonChecked	LogonUI.exe

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1067

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	EyeCry.exe

Modifies data under HKEY_USERS 15 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColor = "3288365271"	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\EnableWindowColorization = "1"	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\DWM\ColorizationAfterglow = "3288365271"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationGlassAttribute = "1"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\StartColorMenu = "4288567808"	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\ColorizationAfterglowBalance = "10"	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
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentColorMenu = "4292311040"	LogonUI.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeShutdownPrivilege	2192	shutdown.exe
Token: SeRemoteShutdownPrivilege	2192	shutdown.exe
Token: SeShutdownPrivilege	2824	shutdown.exe
Token: SeRemoteShutdownPrivilege	2824	shutdown.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2592	LogonUI.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2868 wrote to memory of 2076	2868	02ae530ebb33ee8528ac0b9061d41216d3f3d4dcd8e9b0fe7f7cd0511247b7df.exe	75
PID 2868 wrote to memory of 2076	2868	02ae530ebb33ee8528ac0b9061d41216d3f3d4dcd8e9b0fe7f7cd0511247b7df.exe	75
PID 2868 wrote to memory of 2076	2868	02ae530ebb33ee8528ac0b9061d41216d3f3d4dcd8e9b0fe7f7cd0511247b7df.exe	75
PID 2076 wrote to memory of 2192	2076	EyeCry.exe	76
PID 2076 wrote to memory of 2192	2076	EyeCry.exe	76
PID 2076 wrote to memory of 2192	2076	EyeCry.exe	76
PID 2076 wrote to memory of 2824	2076	EyeCry.exe	77
PID 2076 wrote to memory of 2824	2076	EyeCry.exe	77
PID 2076 wrote to memory of 2824	2076	EyeCry.exe	77

C:\Users\Admin\AppData\Local\Temp\02ae530ebb33ee8528ac0b9061d41216d3f3d4dcd8e9b0fe7f7cd0511247b7df.exe
"C:\Users\Admin\AppData\Local\Temp\02ae530ebb33ee8528ac0b9061d41216d3f3d4dcd8e9b0fe7f7cd0511247b7df.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2868
- C:\Users\Admin\AppData\Local\Temp\EyeCry.exe
  "C:\Users\Admin\AppData\Local\Temp\EyeCry.exe"
  2⤵
  - Executes dropped EXE
  - Writes to the Master Boot Record (MBR)
  - Suspicious use of WriteProcessMemory
  PID:2076
- - C:\Windows\SysWOW64\shutdown.exe
    shutdown.exe -r -f -t 0
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:2192
- - C:\Windows\SysWOW64\shutdown.exe
    C:\Windows\System32\shutdown.exe -r -f -t 0
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:2824

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x0 /state0:0xa3ad1055 /state1:0x41c64e6d
1⤵
- Modifies WinLogon to allow AutoLogon
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:2592

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Bootkit

Winlogon Helper DLL

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Analysis

Sharing

Errors

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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