6fcd7640e0a6d96401dc81d4ac5c14c61a13eac265b5cda2e75d654735e5bf03

Analysis

max time kernel
9s
max time network
13s
platform
windows10-2004_x64
resource
win10v2004-20230915-en
resource tags

arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
submitted
10/10/2023, 11:25

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Reason

Machine shutdown

Report Analysis Logs

General

Target

6fcd7640e0a6d96401dc81d4ac5c14c61a13eac265b5cda2e75d654735e5bf03.exe
Size

6KB
MD5

ae58ad17509c17212d20e8a34b6182de
SHA1

2d2eabecd2a2c4b653716dabd018283e3b5915d3
SHA256

6fcd7640e0a6d96401dc81d4ac5c14c61a13eac265b5cda2e75d654735e5bf03
SHA512

5e1a69b9ccf498aa061be6f168f299728990b13888bc0a4a03193f74af50c1c5e6bf51dbc6d52d1f16ffcc8d15d3992f5b87f343aa0a198268b6bdc54869d8b8
SSDEEP

48:6+awjGQxerPYi4BylGo7DPPCBqv5e0hIBo7PDcVNM4DzdR60VP5MTbKbvfvitiOu:xerP7zPocH7bcjblP+TcCB732eNU

Score

7^/10

bootkit persistence

Malware Config

Signatures

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2890696111-2332180956-3312704074-1000\Control Panel\International\Geo\Nation	6fcd7640e0a6d96401dc81d4ac5c14c61a13eac265b5cda2e75d654735e5bf03.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

T1542.003

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	6fcd7640e0a6d96401dc81d4ac5c14c61a13eac265b5cda2e75d654735e5bf03.exe

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

System Information Discovery
T1082

Modifies data under HKEY_USERS 15 IoCs

description	ioc	Process
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentPalette = a6d8ff0076b9ed00429ce3000078d700005a9e000042750000264200f7630c00	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglow = "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\CurrentVersion\Explorer\Accent\StartColorMenu = "4288567808"	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\ColorizationColorBalance = "89"	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\DWM\EnableWindowColorization = "116"	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 (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History\AutoColor = "0"	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
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglowBalance = "10"	LogonUI.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeShutdownPrivilege	2516	shutdown.exe
Token: SeRemoteShutdownPrivilege	2516	shutdown.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3164	LogonUI.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 3244 wrote to memory of 2516	3244	6fcd7640e0a6d96401dc81d4ac5c14c61a13eac265b5cda2e75d654735e5bf03.exe	86
PID 3244 wrote to memory of 2516	3244	6fcd7640e0a6d96401dc81d4ac5c14c61a13eac265b5cda2e75d654735e5bf03.exe	86

C:\Users\Admin\AppData\Local\Temp\6fcd7640e0a6d96401dc81d4ac5c14c61a13eac265b5cda2e75d654735e5bf03.exe
"C:\Users\Admin\AppData\Local\Temp\6fcd7640e0a6d96401dc81d4ac5c14c61a13eac265b5cda2e75d654735e5bf03.exe"
1⤵
- Checks computer location settings
- Writes to the Master Boot Record (MBR)
- Suspicious use of WriteProcessMemory
PID:3244
- C:\Windows\System32\shutdown.exe
  "C:\Windows\System32\shutdown.exe" -s -t 0 -f
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2516

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x4 /state0:0xa39fd055 /state1:0x41c64e6d
1⤵
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:3164

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Defense Evasion

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/3244-0-0x00000175A78B0000-0x00000175A78B8000-memory.dmp

Filesize
32KB

Download
memory/3244-2-0x00007FFABA450000-0x00007FFABAF11000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

Errors

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads