Malware Analysis Report

2024-11-30 16:02

Sample ID 220708-b7739aedd4
Target 42aa8ecf0677adfb5dcdbcb7a19485dcbe7a2c2749fc5dda541d2157cdd2be3a
SHA256 42aa8ecf0677adfb5dcdbcb7a19485dcbe7a2c2749fc5dda541d2157cdd2be3a
Tags
imminent persistence spyware trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

42aa8ecf0677adfb5dcdbcb7a19485dcbe7a2c2749fc5dda541d2157cdd2be3a

Threat Level: Known bad

The file 42aa8ecf0677adfb5dcdbcb7a19485dcbe7a2c2749fc5dda541d2157cdd2be3a was found to be: Known bad.

Malicious Activity Summary

imminent persistence spyware trojan

Imminent RAT

Executes dropped EXE

Drops startup file

Checks computer location settings

Adds Run key to start application

Drops desktop.ini file(s)

Suspicious use of SetThreadContext

Drops file in Windows directory

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Suspicious use of SetWindowsHookEx

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-07-08 01:48

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2022-07-08 01:48

Reported

2022-07-08 03:54

Platform

win7-20220414-en

Max time kernel

119s

Max time network

47s

Command Line

"C:\Users\Admin\AppData\Local\Temp\42aa8ecf0677adfb5dcdbcb7a19485dcbe7a2c2749fc5dda541d2157cdd2be3a.exe"

Signatures

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\llswni.exe N/A

Drops startup file

Description Indicator Process Target
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\llswni.exe C:\Users\Admin\AppData\Local\Temp\42aa8ecf0677adfb5dcdbcb7a19485dcbe7a2c2749fc5dda541d2157cdd2be3a.exe N/A
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\llswni.exe C:\Users\Admin\AppData\Local\Temp\42aa8ecf0677adfb5dcdbcb7a19485dcbe7a2c2749fc5dda541d2157cdd2be3a.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\Microsoft.NET\Framework\v2.0.50727\config\security.config.cch.new C:\Users\Admin\AppData\Local\Temp\42aa8ecf0677adfb5dcdbcb7a19485dcbe7a2c2749fc5dda541d2157cdd2be3a.exe N/A
File created C:\Windows\Microsoft.NET\Framework\v2.0.50727\config\enterprisesec.config.cch.new C:\Users\Admin\AppData\Local\Temp\42aa8ecf0677adfb5dcdbcb7a19485dcbe7a2c2749fc5dda541d2157cdd2be3a.exe N/A

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\42aa8ecf0677adfb5dcdbcb7a19485dcbe7a2c2749fc5dda541d2157cdd2be3a.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\llswni.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\42aa8ecf0677adfb5dcdbcb7a19485dcbe7a2c2749fc5dda541d2157cdd2be3a.exe

"C:\Users\Admin\AppData\Local\Temp\42aa8ecf0677adfb5dcdbcb7a19485dcbe7a2c2749fc5dda541d2157cdd2be3a.exe"

C:\Windows\SysWOW64\explorer.exe

"C:\Windows\System32\explorer.exe" /c select, C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\llswni.exe

C:\Windows\explorer.exe

C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\llswni.exe

"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\llswni.exe"

Network

N/A

Files

memory/972-54-0x00000000753B1000-0x00000000753B3000-memory.dmp

memory/972-55-0x00000000748C0000-0x0000000074E6B000-memory.dmp

memory/972-56-0x00000000748C0000-0x0000000074E6B000-memory.dmp

memory/1996-57-0x0000000000000000-mapping.dmp

memory/1996-59-0x0000000071B01000-0x0000000071B03000-memory.dmp

memory/596-60-0x000007FEFBDA1000-0x000007FEFBDA3000-memory.dmp

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\llswni.exe

MD5 8b683771c162d0f751ec0eed59ab8471
SHA1 749e230bfaaab4e79aeab3ba5ca8e6cdc7bde183
SHA256 42aa8ecf0677adfb5dcdbcb7a19485dcbe7a2c2749fc5dda541d2157cdd2be3a
SHA512 bec4cf42857a7a217ec4f4e4cc99905eb9e69a560f6945869fa421b5cfcb7b4b4442385ff3ab758bced5db53f5472d1984a8e23a85cc28e54c8d8cdcfdfe78d2

memory/584-62-0x0000000000000000-mapping.dmp

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\llswni.exe

MD5 8b683771c162d0f751ec0eed59ab8471
SHA1 749e230bfaaab4e79aeab3ba5ca8e6cdc7bde183
SHA256 42aa8ecf0677adfb5dcdbcb7a19485dcbe7a2c2749fc5dda541d2157cdd2be3a
SHA512 bec4cf42857a7a217ec4f4e4cc99905eb9e69a560f6945869fa421b5cfcb7b4b4442385ff3ab758bced5db53f5472d1984a8e23a85cc28e54c8d8cdcfdfe78d2

C:\Windows\Microsoft.NET\Framework\v2.0.50727\config\security.config.cch

MD5 e34e8764306ec5f0f9fcdb6172d614ad
SHA1 05ad1be45ba28bddff04743e5fc7739e654da1a4
SHA256 bf3f47e93dcad3941f791c4f375196aa89335299da2d58379d2ed0f015c96186
SHA512 6eff41a196b803e36afbdd56412c895047b3ca08bd6771d0d711fa1fcaa693ee1720e54f0cea7e2286e2f3e9dab98d7e427fde8aa69514ea33f393d044112bbe

memory/584-66-0x00000000748C0000-0x0000000074E6B000-memory.dmp

memory/972-67-0x00000000748C0000-0x0000000074E6B000-memory.dmp

memory/584-68-0x00000000748C0000-0x0000000074E6B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-07-08 01:48

Reported

2022-07-08 03:51

Platform

win10v2004-20220414-en

Max time kernel

150s

Max time network

155s

Command Line

"C:\Users\Admin\AppData\Local\Temp\42aa8ecf0677adfb5dcdbcb7a19485dcbe7a2c2749fc5dda541d2157cdd2be3a.exe"

Signatures

Imminent RAT

trojan spyware imminent

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\llswni.exe N/A

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\42aa8ecf0677adfb5dcdbcb7a19485dcbe7a2c2749fc5dda541d2157cdd2be3a.exe N/A

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\llswni.exe C:\Users\Admin\AppData\Local\Temp\42aa8ecf0677adfb5dcdbcb7a19485dcbe7a2c2749fc5dda541d2157cdd2be3a.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\llswni.exe C:\Users\Admin\AppData\Local\Temp\42aa8ecf0677adfb5dcdbcb7a19485dcbe7a2c2749fc5dda541d2157cdd2be3a.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Defender = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Start Menu\\Programs\\Startup\\llswni.exe -boot" C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\llswni.exe N/A

Drops desktop.ini file(s)

Description Indicator Process Target
File created C:\Windows\assembly\Desktop.ini C:\Windows\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe N/A
File opened for modification C:\Windows\assembly\Desktop.ini C:\Windows\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 4980 set thread context of 4488 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\llswni.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\Microsoft.NET\Framework\v2.0.50727\config\enterprisesec.config.cch.new C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\llswni.exe N/A
File opened for modification C:\Windows\assembly C:\Windows\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe N/A
File created C:\Windows\assembly\Desktop.ini C:\Windows\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe N/A
File opened for modification C:\Windows\assembly\Desktop.ini C:\Windows\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe N/A
File created C:\Windows\Microsoft.NET\Framework\v2.0.50727\config\security.config.cch.new C:\Users\Admin\AppData\Local\Temp\42aa8ecf0677adfb5dcdbcb7a19485dcbe7a2c2749fc5dda541d2157cdd2be3a.exe N/A
File created C:\Windows\Microsoft.NET\Framework\v2.0.50727\config\enterprisesec.config.cch.new C:\Users\Admin\AppData\Local\Temp\42aa8ecf0677adfb5dcdbcb7a19485dcbe7a2c2749fc5dda541d2157cdd2be3a.exe N/A
File created C:\Windows\Microsoft.NET\Framework\v2.0.50727\config\security.config.cch.new C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\llswni.exe N/A

Enumerates physical storage devices

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2184 wrote to memory of 1004 N/A C:\Users\Admin\AppData\Local\Temp\42aa8ecf0677adfb5dcdbcb7a19485dcbe7a2c2749fc5dda541d2157cdd2be3a.exe C:\Windows\SysWOW64\explorer.exe
PID 2184 wrote to memory of 1004 N/A C:\Users\Admin\AppData\Local\Temp\42aa8ecf0677adfb5dcdbcb7a19485dcbe7a2c2749fc5dda541d2157cdd2be3a.exe C:\Windows\SysWOW64\explorer.exe
PID 2184 wrote to memory of 1004 N/A C:\Users\Admin\AppData\Local\Temp\42aa8ecf0677adfb5dcdbcb7a19485dcbe7a2c2749fc5dda541d2157cdd2be3a.exe C:\Windows\SysWOW64\explorer.exe
PID 4696 wrote to memory of 4980 N/A C:\Windows\explorer.exe C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\llswni.exe
PID 4696 wrote to memory of 4980 N/A C:\Windows\explorer.exe C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\llswni.exe
PID 4696 wrote to memory of 4980 N/A C:\Windows\explorer.exe C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\llswni.exe
PID 4980 wrote to memory of 4488 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\llswni.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe
PID 4980 wrote to memory of 4488 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\llswni.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe
PID 4980 wrote to memory of 4488 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\llswni.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe
PID 4980 wrote to memory of 4488 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\llswni.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe
PID 4980 wrote to memory of 4488 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\llswni.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe
PID 4980 wrote to memory of 4488 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\llswni.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe
PID 4980 wrote to memory of 4488 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\llswni.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe
PID 4980 wrote to memory of 4488 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\llswni.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe

Processes

C:\Users\Admin\AppData\Local\Temp\42aa8ecf0677adfb5dcdbcb7a19485dcbe7a2c2749fc5dda541d2157cdd2be3a.exe

"C:\Users\Admin\AppData\Local\Temp\42aa8ecf0677adfb5dcdbcb7a19485dcbe7a2c2749fc5dda541d2157cdd2be3a.exe"

C:\Windows\SysWOW64\explorer.exe

"C:\Windows\System32\explorer.exe" /c select, C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\llswni.exe

C:\Windows\explorer.exe

C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\llswni.exe

"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\llswni.exe"

C:\Windows\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe

"C:\Windows\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe"

C:\Windows\system32\wbem\WmiApSrv.exe

C:\Windows\system32\wbem\WmiApSrv.exe

Network

Country Destination Domain Proto
US 20.189.173.10:443 tcp
US 52.109.8.19:443 tcp
DE 67.24.27.254:80 tcp
BE 8.238.110.126:80 tcp
BE 8.238.110.126:80 tcp
US 8.8.8.8:53 mlhdns.phatbois.me udp
US 8.8.8.8:53 mlhdns.phatbois.me udp
US 8.8.8.8:53 mlhdns.phatbois.me udp
US 8.8.8.8:53 mlhdns.phatbois.me udp

Files

memory/2184-130-0x0000000074660000-0x0000000074C11000-memory.dmp

memory/2184-131-0x0000000074660000-0x0000000074C11000-memory.dmp

memory/1004-132-0x0000000000000000-mapping.dmp

memory/2184-133-0x0000000074660000-0x0000000074C11000-memory.dmp

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\llswni.exe

MD5 8b683771c162d0f751ec0eed59ab8471
SHA1 749e230bfaaab4e79aeab3ba5ca8e6cdc7bde183
SHA256 42aa8ecf0677adfb5dcdbcb7a19485dcbe7a2c2749fc5dda541d2157cdd2be3a
SHA512 bec4cf42857a7a217ec4f4e4cc99905eb9e69a560f6945869fa421b5cfcb7b4b4442385ff3ab758bced5db53f5472d1984a8e23a85cc28e54c8d8cdcfdfe78d2

memory/4980-135-0x0000000000000000-mapping.dmp

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\llswni.exe

MD5 8b683771c162d0f751ec0eed59ab8471
SHA1 749e230bfaaab4e79aeab3ba5ca8e6cdc7bde183
SHA256 42aa8ecf0677adfb5dcdbcb7a19485dcbe7a2c2749fc5dda541d2157cdd2be3a
SHA512 bec4cf42857a7a217ec4f4e4cc99905eb9e69a560f6945869fa421b5cfcb7b4b4442385ff3ab758bced5db53f5472d1984a8e23a85cc28e54c8d8cdcfdfe78d2

C:\Windows\Microsoft.NET\Framework\v2.0.50727\config\enterprisesec.config.cch

MD5 7036eb16911c2cec76f7edfbe4c59d67
SHA1 ed3aa528de2da2e8844c028d38d17624f4da917f
SHA256 5653cfc26cb99bbf9b0ee8ef4ab6ec18da9f5a2492e257cf0ae6215ecd7e3593
SHA512 fe969ac05997ca9d1697fa02bbf5022ce7a41a6a8ce4f0b440f9bf8287162095d405f21df1941173858cd0591de97504ec6de312a941ec5106714bbf28fb782e

C:\Windows\Microsoft.NET\Framework\v2.0.50727\config\security.config.cch

MD5 7036eb16911c2cec76f7edfbe4c59d67
SHA1 ed3aa528de2da2e8844c028d38d17624f4da917f
SHA256 5653cfc26cb99bbf9b0ee8ef4ab6ec18da9f5a2492e257cf0ae6215ecd7e3593
SHA512 fe969ac05997ca9d1697fa02bbf5022ce7a41a6a8ce4f0b440f9bf8287162095d405f21df1941173858cd0591de97504ec6de312a941ec5106714bbf28fb782e

memory/4980-139-0x00000000745E0000-0x0000000074B91000-memory.dmp

memory/4980-140-0x00000000745E0000-0x0000000074B91000-memory.dmp

memory/4488-141-0x0000000000000000-mapping.dmp

memory/4488-142-0x0000000000400000-0x0000000000456000-memory.dmp

memory/4980-143-0x00000000745E0000-0x0000000074B91000-memory.dmp

memory/4488-144-0x00000000745E0000-0x0000000074B91000-memory.dmp

memory/4488-145-0x00000000745E0000-0x0000000074B91000-memory.dmp