8539200ce4a8a629b0460d45a878d8389534c8a93a266641cfd1813792ce109e

General

Target

8539200ce4a8a629b0460d45a878d8389534c8a93a266641cfd1813792ce109e.exe
Size

871KB
MD5

8e4e5f80d4bec7dc4e3b0055f803d9d1
SHA1

bc9d2c09cd42172b697714225cace127d29b50ea
SHA256

8539200ce4a8a629b0460d45a878d8389534c8a93a266641cfd1813792ce109e
SHA512

3f5ece6fbc58dec149e0bf5d67895055e7314a59b3478eacf223a0e20f5aaf2730cb22250a571740cb5510b24131c8f18b6600b97809b94550a3f92e3bd5b22d
SSDEEP

24576:OdYJ4Zs7JAaWf66BCaVquMNy2CPtQUL2in:OdY+slAdfLFN2bUKi

Score

10^/10

evasion persistence

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

Processes:

8539200ce4a8a629b0460d45a878d8389534c8a93a266641cfd1813792ce109e.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "saliter.exe"	8539200ce4a8a629b0460d45a878d8389534c8a93a266641cfd1813792ce109e.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "saliter.exe"	8539200ce4a8a629b0460d45a878d8389534c8a93a266641cfd1813792ce109e.exe

Disables Task Manager via registry modification
evasion

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

8539200ce4a8a629b0460d45a878d8389534c8a93a266641cfd1813792ce109e.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	8539200ce4a8a629b0460d45a878d8389534c8a93a266641cfd1813792ce109e.exe

Drops file in Windows directory 2 IoCs

Processes:

8539200ce4a8a629b0460d45a878d8389534c8a93a266641cfd1813792ce109e.exeLogonUI.exe

description	ioc	process
File opened for modification	\??\c:\windows\saliter.exe	8539200ce4a8a629b0460d45a878d8389534c8a93a266641cfd1813792ce109e.exe
File created	C:\Windows\rescache\_merged\2229298842\4066884077.pri	LogonUI.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

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\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
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
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\StartColorMenu = "4288567808"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColor = "3288365271"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\EnableWindowColorization = "174"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent	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\ColorizationAfterglow = "3288365271"	LogonUI.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

shutdown.exe

description pid process

Token: SeShutdownPrivilege 3880 shutdown.exe
Token: SeRemoteShutdownPrivilege 3880 shutdown.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

LogonUI.exe

pid process

3496 LogonUI.exe
3496 LogonUI.exe

description	pid	process
Token: SeShutdownPrivilege	3880	shutdown.exe
Token: SeRemoteShutdownPrivilege	3880	shutdown.exe

pid	process
3496	LogonUI.exe
3496	LogonUI.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

8539200ce4a8a629b0460d45a878d8389534c8a93a266641cfd1813792ce109e.exe

description	pid	process	target process
PID 4028 wrote to memory of 3880	4028	8539200ce4a8a629b0460d45a878d8389534c8a93a266641cfd1813792ce109e.exe	shutdown.exe
PID 4028 wrote to memory of 3880	4028	8539200ce4a8a629b0460d45a878d8389534c8a93a266641cfd1813792ce109e.exe	shutdown.exe
PID 4028 wrote to memory of 3880	4028	8539200ce4a8a629b0460d45a878d8389534c8a93a266641cfd1813792ce109e.exe	shutdown.exe

C:\Users\Admin\AppData\Local\Temp\8539200ce4a8a629b0460d45a878d8389534c8a93a266641cfd1813792ce109e.exe
"C:\Users\Admin\AppData\Local\Temp\8539200ce4a8a629b0460d45a878d8389534c8a93a266641cfd1813792ce109e.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:4028

C:\Windows\SysWOW64\shutdown.exe
"C:\Windows\System32\shutdown.exe" -r -t 00
2⤵
- Suspicious use of AdjustPrivilegeToken
PID:3880

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x4 /state0:0xa39cb055 /state1:0x41c64e6d
1⤵
- Drops file in Windows directory
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:3496