Malware Analysis Report

2024-11-16 12:47

Sample ID 240806-ps7qtsyhqq
Target UltraUXThemePatcher_4.4.1.exe
SHA256 9a7b24fc111f4e312535f0e3eee52ea4619c7c0f722b36be426681109e58c4ca
Tags
discovery defense_evasion exploit
score
8/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral4

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral6

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral7

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral8

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral3

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral5

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
8/10

SHA256

9a7b24fc111f4e312535f0e3eee52ea4619c7c0f722b36be426681109e58c4ca

Threat Level: Likely malicious

The file UltraUXThemePatcher_4.4.1.exe was found to be: Likely malicious.

Malicious Activity Summary

discovery defense_evasion exploit

Possible privilege escalation attempt

Modifies file permissions

Executes dropped EXE

Loads dropped DLL

Checks computer location settings

File and Directory Permissions Modification: Windows File and Directory Permissions Modification

Checks installed software on the system

Drops file in System32 directory

Drops file in Program Files directory

Enumerates physical storage devices

Program crash

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

Uses Volume Shadow Copy service COM API

Suspicious behavior: GetForegroundWindowSpam

Modifies data under HKEY_USERS

Checks SCSI registry key(s)

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-06 12:36

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A
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Analysis: behavioral4

Detonation Overview

Submitted

2024-08-06 12:36

Reported

2024-08-06 12:39

Platform

win10v2004-20240802-en

Max time kernel

93s

Max time network

94s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\nsDialogs.dll,#1

Signatures

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Windows\SysWOW64\rundll32.exe

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4952 wrote to memory of 3388 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4952 wrote to memory of 3388 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4952 wrote to memory of 3388 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\nsDialogs.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\nsDialogs.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3388 -ip 3388

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3388 -s 636

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 5.181.190.20.in-addr.arpa udp
US 8.8.8.8:53 18.24.18.2.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 73.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 25.24.18.2.in-addr.arpa udp

Files

N/A

Analysis: behavioral6

Detonation Overview

Submitted

2024-08-06 12:36

Reported

2024-08-06 12:39

Platform

win10v2004-20240802-en

Max time kernel

94s

Max time network

98s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Uninstall.exe"

Signatures

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\~nsu1.tmp\Un.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\~nsu1.tmp\Un.exe N/A

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\Uninstall.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\~nsu1.tmp\Un.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\Uninstall.exe

"C:\Users\Admin\AppData\Local\Temp\Uninstall.exe"

C:\Users\Admin\AppData\Local\Temp\~nsu1.tmp\Un.exe

"C:\Users\Admin\AppData\Local\Temp\~nsu1.tmp\Un.exe" _?=C:\Users\Admin\AppData\Local\Temp\

Network

Country Destination Domain Proto
US 8.8.8.8:53 76.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 18.24.18.2.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp

Files

C:\Users\Admin\AppData\Local\Temp\~nsu1.tmp\Un.exe

MD5 e19b462861dcd1904816596fd8f9ecc1
SHA1 929eb85df851a7c0424af18556f3521006464167
SHA256 fac18b7c5bad926541ad231631c1f48b7963613600fcdb7af9b5a647f4b7adb0
SHA512 d60627221418bd753bd735b3cf1a6b2994666174926799e1e4fa9f44e43a82265df9ecf6a66645ba41b85f6c8e6b1adc50826e8f77a11820ae7c509aeda1d2fb

C:\Users\Admin\AppData\Local\Temp\nsj76F7.tmp\nsDialogs.dll

MD5 1d8f01a83ddd259bc339902c1d33c8f1
SHA1 9f7806af462c94c39e2ec6cc9c7ad05c44eba04e
SHA256 4b7d17da290f41ebe244827cc295ce7e580da2f7e9f7cc3efc1abc6898e3c9ed
SHA512 28bf647374b4b500a0f3dbced70c2b256f93940e2b39160512e6e486ac31d1d90945acecef578f61b0a501f27c7106b6ffc3deab2ec3bfb3d9af24c9449a1567

Analysis: behavioral7

Detonation Overview

Submitted

2024-08-06 12:36

Reported

2024-08-06 12:39

Platform

win10v2004-20240802-en

Max time kernel

148s

Max time network

150s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#1

Signatures

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Windows\SysWOW64\rundll32.exe

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3528 wrote to memory of 1512 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3528 wrote to memory of 1512 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3528 wrote to memory of 1512 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1512 -ip 1512

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1512 -s 612

Network

Country Destination Domain Proto
US 8.8.8.8:53 71.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 18.24.18.2.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 25.24.18.2.in-addr.arpa udp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp

Files

N/A

Analysis: behavioral8

Detonation Overview

Submitted

2024-08-06 12:36

Reported

2024-08-06 12:39

Platform

win10v2004-20240802-en

Max time kernel

93s

Max time network

101s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\nsDialogs.dll,#1

Signatures

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Windows\SysWOW64\rundll32.exe

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3984 wrote to memory of 2988 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3984 wrote to memory of 2988 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3984 wrote to memory of 2988 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\nsDialogs.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\nsDialogs.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2988 -ip 2988

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2988 -s 636

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 85.177.190.20.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 18.24.18.2.in-addr.arpa udp
IE 52.111.236.23:443 tcp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp

Files

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-06 12:36

Reported

2024-08-06 12:37

Platform

win10v2004-20240802-en

Max time kernel

30s

Max time network

31s

Command Line

"C:\Users\Admin\AppData\Local\Temp\UltraUXThemePatcher_4.4.1.exe"

Signatures

Possible privilege escalation attempt

exploit
Description Indicator Process Target
N/A N/A C:\Windows\system32\takeown.exe N/A
N/A N/A C:\Windows\system32\takeown.exe N/A
N/A N/A C:\Windows\system32\icacls.exe N/A
N/A N/A C:\Windows\system32\takeown.exe N/A
N/A N/A C:\Windows\system32\takeown.exe N/A
N/A N/A C:\Windows\system32\icacls.exe N/A

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\UltraUXThemePatcher_4.4.1.exe N/A

Modifies file permissions

discovery
Description Indicator Process Target
N/A N/A C:\Windows\system32\icacls.exe N/A
N/A N/A C:\Windows\system32\takeown.exe N/A
N/A N/A C:\Windows\system32\takeown.exe N/A
N/A N/A C:\Windows\system32\icacls.exe N/A
N/A N/A C:\Windows\system32\takeown.exe N/A
N/A N/A C:\Windows\system32\takeown.exe N/A

Checks installed software on the system

discovery

File and Directory Permissions Modification: Windows File and Directory Permissions Modification

defense_evasion

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\System32\themeui.dll.new C:\Users\Admin\AppData\Local\Temp\UltraUXThemePatcher_4.4.1.exe N/A
File opened for modification C:\Windows\system32\themeui.dll.new C:\Users\Admin\AppData\Local\Temp\UltraUXThemePatcher_4.4.1.exe N/A
File opened for modification C:\Windows\system32\themeui.dll.old C:\Users\Admin\AppData\Local\Temp\UltraUXThemePatcher_4.4.1.exe N/A
File created C:\Windows\System32\themeui.dll.backup C:\Users\Admin\AppData\Local\Temp\UltraUXThemePatcher_4.4.1.exe N/A
File opened for modification C:\Windows\System32\themeui.dll.backup C:\Users\Admin\AppData\Local\Temp\UltraUXThemePatcher_4.4.1.exe N/A
File created C:\Windows\System32\uxinit.dll.backup C:\Users\Admin\AppData\Local\Temp\UltraUXThemePatcher_4.4.1.exe N/A
File created C:\Windows\System32\uxinit.dll.new C:\Users\Admin\AppData\Local\Temp\UltraUXThemePatcher_4.4.1.exe N/A
File opened for modification C:\Windows\system32\uxinit.dll.new C:\Users\Admin\AppData\Local\Temp\UltraUXThemePatcher_4.4.1.exe N/A
File opened for modification C:\Windows\system32\uxinit.dll.old C:\Users\Admin\AppData\Local\Temp\UltraUXThemePatcher_4.4.1.exe N/A

Drops file in Program Files directory

Description Indicator Process Target
File created C:\Program Files (x86)\UltraUXThemePatcher\Uninstall.exe C:\Users\Admin\AppData\Local\Temp\UltraUXThemePatcher_4.4.1.exe N/A

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\UltraUXThemePatcher_4.4.1.exe N/A

Checks SCSI registry key(s)

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Device Parameters C:\Windows\system32\vssvc.exe N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Device Parameters C:\Windows\system32\vssvc.exe N/A
Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Device Parameters\Partmgr C:\Windows\system32\vssvc.exe N/A
Set value (data) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Device Parameters\Partmgr\PartitionTableCache = 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 C:\Windows\system32\vssvc.exe N/A
Set value (data) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Device Parameters\Partmgr\SnapshotDataCache = 534e41505041525401000000700000008ec7416a0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 C:\Windows\system32\vssvc.exe N/A

Modifies data under HKEY_USERS

Description Indicator Process Target
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\StartColorMenu = "4288567808" C:\Windows\system32\LogonUI.exe N/A
Set value (data) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentPalette = a6d8ff0076b9ed00429ce3000078d700005a9e000042750000264200f7630c00 C:\Windows\system32\LogonUI.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History C:\Windows\system32\LogonUI.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM C:\Windows\system32\LogonUI.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColor = "3288365271" C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglow = "3288365271" C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationBlurBalance = "1" C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentColorMenu = "4292311040" C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\AccentColor = "4292311040" C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColorBalance = "89" C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglowBalance = "10" C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\EnableWindowColorization = "242" C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationGlassAttribute = "1" C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History\AutoColor = "0" C:\Windows\system32\LogonUI.exe N/A

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\UltraUXThemePatcher_4.4.1.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeBackupPrivilege N/A C:\Windows\system32\vssvc.exe N/A
Token: SeRestorePrivilege N/A C:\Windows\system32\vssvc.exe N/A
Token: SeAuditPrivilege N/A C:\Windows\system32\vssvc.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Windows\system32\takeown.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Windows\system32\takeown.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\system32\srtasks.exe N/A
Token: SeRestorePrivilege N/A C:\Windows\system32\srtasks.exe N/A
Token: SeSecurityPrivilege N/A C:\Windows\system32\srtasks.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Windows\system32\srtasks.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\system32\srtasks.exe N/A
Token: SeRestorePrivilege N/A C:\Windows\system32\srtasks.exe N/A
Token: SeSecurityPrivilege N/A C:\Windows\system32\srtasks.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Windows\system32\srtasks.exe N/A
Token: SeShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\UltraUXThemePatcher_4.4.1.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\system32\LogonUI.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4892 wrote to memory of 404 N/A C:\Users\Admin\AppData\Local\Temp\UltraUXThemePatcher_4.4.1.exe C:\Windows\system32\takeown.exe
PID 4892 wrote to memory of 404 N/A C:\Users\Admin\AppData\Local\Temp\UltraUXThemePatcher_4.4.1.exe C:\Windows\system32\takeown.exe
PID 4892 wrote to memory of 2576 N/A C:\Users\Admin\AppData\Local\Temp\UltraUXThemePatcher_4.4.1.exe C:\Windows\system32\icacls.exe
PID 4892 wrote to memory of 2576 N/A C:\Users\Admin\AppData\Local\Temp\UltraUXThemePatcher_4.4.1.exe C:\Windows\system32\icacls.exe
PID 4892 wrote to memory of 4660 N/A C:\Users\Admin\AppData\Local\Temp\UltraUXThemePatcher_4.4.1.exe C:\Windows\system32\takeown.exe
PID 4892 wrote to memory of 4660 N/A C:\Users\Admin\AppData\Local\Temp\UltraUXThemePatcher_4.4.1.exe C:\Windows\system32\takeown.exe
PID 4892 wrote to memory of 4604 N/A C:\Users\Admin\AppData\Local\Temp\UltraUXThemePatcher_4.4.1.exe C:\Windows\system32\takeown.exe
PID 4892 wrote to memory of 4604 N/A C:\Users\Admin\AppData\Local\Temp\UltraUXThemePatcher_4.4.1.exe C:\Windows\system32\takeown.exe
PID 4892 wrote to memory of 520 N/A C:\Users\Admin\AppData\Local\Temp\UltraUXThemePatcher_4.4.1.exe C:\Windows\system32\icacls.exe
PID 4892 wrote to memory of 520 N/A C:\Users\Admin\AppData\Local\Temp\UltraUXThemePatcher_4.4.1.exe C:\Windows\system32\icacls.exe
PID 4892 wrote to memory of 3716 N/A C:\Users\Admin\AppData\Local\Temp\UltraUXThemePatcher_4.4.1.exe C:\Windows\system32\takeown.exe
PID 4892 wrote to memory of 3716 N/A C:\Users\Admin\AppData\Local\Temp\UltraUXThemePatcher_4.4.1.exe C:\Windows\system32\takeown.exe

Uses Volume Shadow Copy service COM API

ransomware

Processes

C:\Users\Admin\AppData\Local\Temp\UltraUXThemePatcher_4.4.1.exe

"C:\Users\Admin\AppData\Local\Temp\UltraUXThemePatcher_4.4.1.exe"

C:\Windows\system32\vssvc.exe

C:\Windows\system32\vssvc.exe

C:\Windows\system32\srtasks.exe

C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2

C:\Windows\system32\takeown.exe

"C:\Windows\system32\takeown.exe" /f "C:\Windows\system32\themeui.dll"

C:\Windows\system32\icacls.exe

"C:\Windows\system32\icacls.exe" "C:\Windows\system32\themeui.dll" /grant Admin:F

C:\Windows\system32\takeown.exe

"C:\Windows\system32\takeown.exe" /f "C:\Windows\system32\themeui.dll"

C:\Windows\system32\takeown.exe

"C:\Windows\system32\takeown.exe" /f "C:\Windows\system32\uxinit.dll"

C:\Windows\system32\icacls.exe

"C:\Windows\system32\icacls.exe" "C:\Windows\system32\uxinit.dll" /grant Admin:F

C:\Windows\system32\takeown.exe

"C:\Windows\system32\takeown.exe" /f "C:\Windows\system32\uxinit.dll"

C:\Windows\system32\LogonUI.exe

"LogonUI.exe" /flags:0x4 /state0:0xa39b8055 /state1:0x41c64e6d

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 22.177.190.20.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 246.192.101.95.in-addr.arpa udp
US 8.8.8.8:53 udp
US 52.165.165.26:443 tcp
N/A 104.208.16.90:443 tcp
US 8.8.8.8:53 udp

Files

C:\Users\Admin\AppData\Local\Temp\nslBC8B.tmp\System.dll

MD5 4add245d4ba34b04f213409bfe504c07
SHA1 ef756d6581d70e87d58cc4982e3f4d18e0ea5b09
SHA256 9111099efe9d5c9b391dc132b2faf0a3851a760d4106d5368e30ac744eb42706
SHA512 1bd260cabe5ea3cefbbc675162f30092ab157893510f45a1b571489e03ebb2903c55f64f89812754d3fe03c8f10012b8078d1261a7e73ac1f87c82f714bce03d

C:\Users\Admin\AppData\Local\Temp\nslBC8B.tmp\nsisFile.dll

MD5 b7d0d765c151d235165823b48554e442
SHA1 fe530e6c6fd60392d4ce611b21ec9daad3f1bc84
SHA256 a820a32e5ce89e3e336afc71aa1bf42a357ec542c2bc6e50c6255c1333812587
SHA512 5d801c24dfa1b7326f72f9c0acf3a330ef0cc3fce25ceee200bb12eab8c2b653025602e610e0cecda1e7cbd851ce1b66252531220b557a378ddb0b4a1741fa66

C:\Users\Admin\AppData\Local\Temp\nslBC8B.tmp\nsDialogs.dll

MD5 1d8f01a83ddd259bc339902c1d33c8f1
SHA1 9f7806af462c94c39e2ec6cc9c7ad05c44eba04e
SHA256 4b7d17da290f41ebe244827cc295ce7e580da2f7e9f7cc3efc1abc6898e3c9ed
SHA512 28bf647374b4b500a0f3dbced70c2b256f93940e2b39160512e6e486ac31d1d90945acecef578f61b0a501f27c7106b6ffc3deab2ec3bfb3d9af24c9449a1567

C:\Users\Admin\AppData\Local\Temp\nslBC8B.tmp\SysRestore.dll

MD5 4310bd09fc2300b106f0437b6e995330
SHA1 c6790a68e410d4a619b9b59e7540b702a98ad661
SHA256 c686b4df9b4db50fc1ddb7be4cd50d4b1d75894288f4dc50571b79937d7c0d7e
SHA512 49e286ccd285871db74867810c9cf243e3c1522ce7b4c0d1d01bafe72552692234cf4b4d787b900e9c041b8a2c12f193b36a6a35c64ffd5deef0e1be9958b1f7

C:\Windows\System32\themeui.dll.new

MD5 bc377febaa39552cd323cf2d46805e91
SHA1 c812c62292c62f518a9feca5c0366b22c04aa9c3
SHA256 0970d5aaab9247f5b6c63534cb29ff6e1b2b99ba0e4d96bc69eae895e67237c3
SHA512 5c5adb024d051eea9d16dc6411a1445359e5d219c3776fddefc51ea098a2d3c9db4dee22db382976e6911ec159a09bebe4f6249b36a77891d69a490cd0a8eed7

C:\Windows\System32\uxinit.dll.new

MD5 1249ecbaa8441b5f2425ca165b18bff3
SHA1 388fb66c58dedbd29e0b300406e7d20b2c7e8f6c
SHA256 79bfb188b481a28bfa4fced64dc45eaa7fab7b0c5f435e85b02025ae6910377a
SHA512 8b75fa4df32fad47f249fa581b5a969cdf78df84bfe9e95f8bdcfbbe00a38da4c3711d797028a1f63d8cccf6cdbc40594c26aadf0ba419782b2991a474ba5c4c

C:\Users\Admin\AppData\Local\Temp\nslBC8B.tmp\modern-wizard.bmp

MD5 5f728e4e6b970db76c64be8ca3cafc87
SHA1 b7481efd9f6938903214451d792a8b13a645c922
SHA256 aea40659bdb08337064640ea8b4f171881d37456b37b3e2899349ac04f0889c5
SHA512 2cc4e870290f8faddc8eca1a03a1efb34711b3951e263a79f259fd998a9a1f957dbf58c110c5fe64febd414ec7a22e125353f9d5c363866bd0d4298452fdadc8

Analysis: behavioral3

Detonation Overview

Submitted

2024-08-06 12:36

Reported

2024-08-06 12:39

Platform

win10v2004-20240802-en

Max time kernel

94s

Max time network

150s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#1

Signatures

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Windows\SysWOW64\rundll32.exe

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 532 wrote to memory of 4696 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 532 wrote to memory of 4696 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 532 wrote to memory of 4696 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4696 -ip 4696

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4696 -s 612

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 25.24.18.2.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 140.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 18.24.18.2.in-addr.arpa udp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp

Files

N/A

Analysis: behavioral5

Detonation Overview

Submitted

2024-08-06 12:36

Reported

2024-08-06 12:39

Platform

win10v2004-20240802-en

Max time kernel

125s

Max time network

126s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\nsisFile.dll,#1

Signatures

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Windows\SysWOW64\rundll32.exe

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1092 wrote to memory of 4744 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1092 wrote to memory of 4744 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1092 wrote to memory of 4744 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\nsisFile.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\nsisFile.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 4744 -ip 4744

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4744 -s 600

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4400,i,3239535018877284530,3457823197501312703,262144 --variations-seed-version --mojo-platform-channel-handle=4420 /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 17.53.126.40.in-addr.arpa udp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 18.24.18.2.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 25.24.18.2.in-addr.arpa udp

Files

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-06 12:36

Reported

2024-08-06 12:39

Platform

win10v2004-20240802-en

Max time kernel

91s

Max time network

139s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\SysRestore.dll,#1

Signatures

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Windows\SysWOW64\rundll32.exe

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3164 wrote to memory of 2512 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3164 wrote to memory of 2512 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3164 wrote to memory of 2512 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\SysRestore.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\SysRestore.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2512 -ip 2512

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2512 -s 600

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 13.107.21.237:443 g.bing.com tcp
US 8.8.8.8:53 136.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 237.21.107.13.in-addr.arpa udp
US 8.8.8.8:53 25.24.18.2.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 52.111.227.14:443 tcp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp

Files

N/A