4fbb94a638ea03db6df456af731c6cbd05ba82242287f7880bb7f1be8b24b6d6

Resubmissions

16-07-2024 10:17

240716-mbvc3azhjd 8

16-07-2024 10:14

240716-l94hysxeml 8

Analysis

max time kernel
18s
max time network
27s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
16-07-2024 10:17

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Reason

Machine shutdown

Report Analysis Logs

General

Target

dl.ps1
Size

20KB
MD5

557e88aa950865a4fd6b50ebc5b4c223
SHA1

d3508b8e4507b520a5e31082bd0e36dd1c4f0b65
SHA256

4fbb94a638ea03db6df456af731c6cbd05ba82242287f7880bb7f1be8b24b6d6
SHA512

1218f41186c34963b6d4f25d9fc590d8a527dfdd3dec8d9b984f7923ba9254d85a0a03e0187614b2b5f423c918cc40b98106bd9c0e3e7eb429ccbe1e6f6f95a4
SSDEEP

384:GNnnhca8iWyW+ud7/HLHajbwHcGlftuLGuIw+GZwNhODLMVqVGGGMrGMbGba0Ni+:GNnnhca8iWyW+ud7/r6jbw8GlftuLGum

Score

8^/10

execution

Malware Config

Signatures

Blocklisted process makes network request 1 IoCs

flow	pid	Process
8	3772	powershell.exe

Drops startup file 3 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\_bncytu4_B.lnk	powershell.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\_bncytu4_BAA.lnk	powershell.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\_bncytu4_By.lnk	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
3772	powershell.exe

Modifies data under HKEY_USERS 15 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM	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\ColorizationAfterglow = "3288365271"	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\ColorizationColor = "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
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\AccentColor = "4292311040"	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\EnableWindowColorization = "207"	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\Themes\History\AutoColor = "0"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentColorMenu = "4292311040"	LogonUI.exe

Modifies registry class 6 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1176886754-713327781-2233697964-1000_Classes\ms-settings\Shell\Open\command	powershell.exe
Key created	\REGISTRY\USER\S-1-5-21-1176886754-713327781-2233697964-1000_Classes\ms-settings	powershell.exe
Key created	\REGISTRY\USER\S-1-5-21-1176886754-713327781-2233697964-1000_Classes\ms-settings\Shell	powershell.exe
Key created	\REGISTRY\USER\S-1-5-21-1176886754-713327781-2233697964-1000_Classes\ms-settings\Shell\Open	powershell.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1176886754-713327781-2233697964-1000_Classes\ms-settings\Shell\Open\command\DelegateExecute	powershell.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1176886754-713327781-2233697964-1000_Classes\ms-settings\Shell\Open\command\ = "C:\\_bncytu4_B\\_bncytu4_Bi7.exe"	powershell.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3772	powershell.exe
3772	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	3772	powershell.exe
Token: SeShutdownPrivilege	1732	shutdown.exe
Token: SeRemoteShutdownPrivilege	1732	shutdown.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3652	LogonUI.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 3772 wrote to memory of 1732	3772	powershell.exe	88
PID 3772 wrote to memory of 1732	3772	powershell.exe	88

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\dl.ps1
1⤵
- Blocklisted process makes network request
- Drops startup file
- Command and Scripting Interpreter: PowerShell
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3772
- C:\Windows\system32\shutdown.exe
  "C:\Windows\system32\shutdown.exe" /r /t 15
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1732

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x4 /state0:0xa39b4055 /state1:0x41c64e6d
1⤵
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:3652

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_oupxa4to.blk.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/3772-0-0x00007FF9D8383000-0x00007FF9D8385000-memory.dmp

Filesize
8KB

Download
memory/3772-1-0x000001E426540000-0x000001E426562000-memory.dmp

Filesize
136KB

Download
memory/3772-11-0x00007FF9D8380000-0x00007FF9D8E41000-memory.dmp

Filesize
10.8MB

Download
memory/3772-12-0x00007FF9D8380000-0x00007FF9D8E41000-memory.dmp

Filesize
10.8MB

Download
memory/3772-13-0x000001E43F510000-0x000001E43F586000-memory.dmp

Filesize
472KB

Download
memory/3772-14-0x000001E43F4B0000-0x000001E43F4CE000-memory.dmp

Filesize
120KB

Download
memory/3772-30-0x00007FF9D8380000-0x00007FF9D8E41000-memory.dmp

Filesize
10.8MB

Download