ad91d4f5be9178df7b570e6db5a8d1fded1a95e843b30be108ed821b33504b33

Reason

Machine shutdown

General

Target

ad91d4f5be9178df7b570e6db5a8d1fded1a95e843b30be108ed821b33504b33.exe
Size

10KB
MD5

f6ec322450da7ee7f89092d4f7fb370a
SHA1

50792442361e3fd992f17361cb1611ced431aad5
SHA256

ad91d4f5be9178df7b570e6db5a8d1fded1a95e843b30be108ed821b33504b33
SHA512

edf1d87789957597355c46c6343e9718eae70d2b073d5a6ddef4c610007e297aaac877d17a13730f1d8ebc4e1b17d84c9bc2e546d99bb30e63e402bdfef64955
SSDEEP

192:3rqvqucLm8WrcchKMqiJQjwPRn4sU9Vw:3rUqbOPhKMqkPws

Score

8^/10

bootkit persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

sys3.exe

pid process

2004 sys3.exe

pid	process
2004	sys3.exe

Writes to the Master Boot Record (MBR) 1 TTPs 2 IoCs

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

bootkit persistence

Bootkit

T1067

Processes:

ad91d4f5be9178df7b570e6db5a8d1fded1a95e843b30be108ed821b33504b33.exesys3.exe

description	ioc	process
File opened for modification	\??\PHYSICALDRIVE0	ad91d4f5be9178df7b570e6db5a8d1fded1a95e843b30be108ed821b33504b33.exe
File opened for modification	\??\PHYSICALDRIVE0	sys3.exe

Modifies data under HKEY_USERS 15 IoCs

Processes:

LogonUI.exe

description	ioc	process
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\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
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent	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\EnableWindowColorization = "58"	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\Explorer\Accent\StartColorMenu = "4288567808"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentColorMenu = "4292311040"	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\ColorizationColor = "3288365271"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History	LogonUI.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

sys3.exe

description pid process

Token: SeShutdownPrivilege 2004 sys3.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

LogonUI.exe

pid process

4232 LogonUI.exe

description	pid	process
Token: SeShutdownPrivilege	2004	sys3.exe

pid	process
4232	LogonUI.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

ad91d4f5be9178df7b570e6db5a8d1fded1a95e843b30be108ed821b33504b33.exe

description	pid	process	target process
PID 1388 wrote to memory of 2004	1388	ad91d4f5be9178df7b570e6db5a8d1fded1a95e843b30be108ed821b33504b33.exe	sys3.exe
PID 1388 wrote to memory of 2004	1388	ad91d4f5be9178df7b570e6db5a8d1fded1a95e843b30be108ed821b33504b33.exe	sys3.exe
PID 1388 wrote to memory of 2004	1388	ad91d4f5be9178df7b570e6db5a8d1fded1a95e843b30be108ed821b33504b33.exe	sys3.exe

C:\Users\Admin\AppData\Local\Temp\ad91d4f5be9178df7b570e6db5a8d1fded1a95e843b30be108ed821b33504b33.exe
"C:\Users\Admin\AppData\Local\Temp\ad91d4f5be9178df7b570e6db5a8d1fded1a95e843b30be108ed821b33504b33.exe"
1⤵
- Writes to the Master Boot Record (MBR)
- Suspicious use of WriteProcessMemory
PID:1388

C:\Users\Admin\AppData\Local\Temp\sys3.exe
C:\Users\Admin\AppData\Local\Temp\\sys3.exe
2⤵
- Executes dropped EXE
- Writes to the Master Boot Record (MBR)
- Suspicious use of AdjustPrivilegeToken
PID:2004

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x4 /state0:0xa39fe055 /state1:0x41c64e6d
1⤵
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:4232

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Bootkit

1

T1067

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\sys3.exe
Filesize
10KB

MD5
f6ec322450da7ee7f89092d4f7fb370a

SHA1
50792442361e3fd992f17361cb1611ced431aad5

SHA256
ad91d4f5be9178df7b570e6db5a8d1fded1a95e843b30be108ed821b33504b33

SHA512
edf1d87789957597355c46c6343e9718eae70d2b073d5a6ddef4c610007e297aaac877d17a13730f1d8ebc4e1b17d84c9bc2e546d99bb30e63e402bdfef64955

Download Submit
C:\Users\Admin\AppData\Local\Temp\sys3.exe
Filesize
10KB

MD5
f6ec322450da7ee7f89092d4f7fb370a

SHA1
50792442361e3fd992f17361cb1611ced431aad5

SHA256
ad91d4f5be9178df7b570e6db5a8d1fded1a95e843b30be108ed821b33504b33

SHA512
edf1d87789957597355c46c6343e9718eae70d2b073d5a6ddef4c610007e297aaac877d17a13730f1d8ebc4e1b17d84c9bc2e546d99bb30e63e402bdfef64955

Download Submit
C:\Users\Admin\AppData\Local\Temp\systm.txt
Filesize
102B

MD5
14ea64272280284cbb1244795075abdc

SHA1
d702e1e380fc524d49b70629c603830edd5af568

SHA256
7cbb09d3f8c0544f4d18377a36e2a2939ad052f6ec39c2eaa5a0814fa5281ab0

SHA512
f677b773db01e90e65b20556af8706c8fb5daafd06430bac38f3b46d5ab78e37f4e754ff7e760b67078ff56a73282b6fa28da1d42eb8977741361694ba8444a1

Download Submit
memory/1388-132-0x000000002AA00000-0x000000002AA05000-memory.dmp

Filesize
20KB

Download
memory/1388-138-0x000000002AA00000-0x000000002AA05000-memory.dmp

Filesize
20KB

Download
memory/2004-133-0x0000000000000000-mapping.dmp

Download
memory/2004-136-0x000000002AA00000-0x000000002AA05000-memory.dmp

Filesize
20KB

Download

Analysis

Sharing

Errors

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads