Malware Analysis Report

2024-10-23 19:04

Sample ID 240629-3agnkssejl
Target ControlLock.exe
SHA256 23b2736b81a4c1e470f4b03ce681656c43e109e73acccbcc6279589fb1b695a6
Tags
controllock quasar spyware trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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

23b2736b81a4c1e470f4b03ce681656c43e109e73acccbcc6279589fb1b695a6

Threat Level: Known bad

The file ControlLock.exe was found to be: Known bad.

Malicious Activity Summary

controllock quasar spyware trojan

Quasar payload

Quasar RAT

Quasar family

Executes dropped EXE

Drops file in System32 directory

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Uses Task Scheduler COM API

Scheduled Task/Job: Scheduled Task

Suspicious use of SetWindowsHookEx

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-29 23:18

Signatures

Quasar family

quasar

Quasar payload

Description Indicator Process Target
N/A N/A N/A N/A

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-29 23:18

Reported

2024-06-29 23:36

Platform

win7-20231129-en

Max time kernel

1042s

Max time network

1049s

Command Line

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

Signatures

Quasar RAT

trojan spyware quasar

Quasar payload

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Executes dropped EXE

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

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\system32\Windows\WindowsDefender.exe C:\Users\Admin\AppData\Local\Temp\ControlLock.exe N/A
File opened for modification C:\Windows\system32\Windows C:\Users\Admin\AppData\Local\Temp\ControlLock.exe N/A
File opened for modification C:\Windows\system32\Windows\WindowsDefender.exe C:\Windows\system32\Windows\WindowsDefender.exe N/A
File opened for modification C:\Windows\system32\Windows C:\Windows\system32\Windows\WindowsDefender.exe N/A
File created C:\Windows\system32\Windows\WindowsDefender.exe C:\Users\Admin\AppData\Local\Temp\ControlLock.exe N/A

Scheduled Task/Job: Scheduled Task

persistence execution
Description Indicator Process Target
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ControlLock.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\system32\Windows\WindowsDefender.exe N/A

Suspicious use of SetWindowsHookEx

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

Uses Task Scheduler COM API

persistence

Processes

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

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

C:\Windows\system32\schtasks.exe

"schtasks" /create /tn "Windows Defender" /sc ONLOGON /tr "C:\Windows\system32\Windows\WindowsDefender.exe" /rl HIGHEST /f

C:\Windows\system32\Windows\WindowsDefender.exe

"C:\Windows\system32\Windows\WindowsDefender.exe"

C:\Windows\system32\schtasks.exe

"schtasks" /create /tn "Windows Defender" /sc ONLOGON /tr "C:\Windows\system32\Windows\WindowsDefender.exe" /rl HIGHEST /f

Network

Country Destination Domain Proto
US 73.66.246.196:4782 tcp
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Files

memory/2060-0-0x000007FEF56E3000-0x000007FEF56E4000-memory.dmp

memory/2060-1-0x0000000000DD0000-0x00000000010F4000-memory.dmp

memory/2060-2-0x000007FEF56E0000-0x000007FEF60CC000-memory.dmp

C:\Windows\System32\Windows\WindowsDefender.exe

MD5 15666ecca39a4cd909eb57e66d3401c6
SHA1 3442a7c4c5a482f1b5ba12f43da299310a323ffb
SHA256 23b2736b81a4c1e470f4b03ce681656c43e109e73acccbcc6279589fb1b695a6
SHA512 49001f1f25cb8ce9a402a2b71c9ae46f795a798a9d7161dce7fc64aa470570503bd9ca3b8975c53ec76f190f5d54e360beb97b4cac35c038a400fc49ba04f213

memory/1728-8-0x000007FEF56E0000-0x000007FEF60CC000-memory.dmp

memory/2060-10-0x000007FEF56E0000-0x000007FEF60CC000-memory.dmp

memory/1728-9-0x0000000000EA0000-0x00000000011C4000-memory.dmp

memory/1728-11-0x000007FEF56E0000-0x000007FEF60CC000-memory.dmp

memory/1728-12-0x000007FEF56E0000-0x000007FEF60CC000-memory.dmp

memory/1728-13-0x000007FEF56E0000-0x000007FEF60CC000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-29 23:18

Reported

2024-06-29 23:34

Platform

win10v2004-20240508-en

Max time kernel

921s

Max time network

929s

Command Line

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

Signatures

Quasar RAT

trojan spyware quasar

Quasar payload

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A

Executes dropped EXE

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

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\system32\Windows\WindowsDefender.exe C:\Users\Admin\AppData\Local\Temp\ControlLock.exe N/A
File opened for modification C:\Windows\system32\Windows\WindowsDefender.exe C:\Users\Admin\AppData\Local\Temp\ControlLock.exe N/A
File opened for modification C:\Windows\system32\Windows C:\Users\Admin\AppData\Local\Temp\ControlLock.exe N/A
File opened for modification C:\Windows\system32\Windows\WindowsDefender.exe C:\Windows\system32\Windows\WindowsDefender.exe N/A
File opened for modification C:\Windows\system32\Windows C:\Windows\system32\Windows\WindowsDefender.exe N/A

Scheduled Task/Job: Scheduled Task

persistence execution
Description Indicator Process Target
N/A N/A C:\Windows\SYSTEM32\schtasks.exe N/A
N/A N/A C:\Windows\SYSTEM32\schtasks.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ControlLock.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\system32\Windows\WindowsDefender.exe N/A

Suspicious use of SetWindowsHookEx

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

Uses Task Scheduler COM API

persistence

Processes

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

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

C:\Windows\SYSTEM32\schtasks.exe

"schtasks" /create /tn "Windows Defender" /sc ONLOGON /tr "C:\Windows\system32\Windows\WindowsDefender.exe" /rl HIGHEST /f

C:\Windows\system32\Windows\WindowsDefender.exe

"C:\Windows\system32\Windows\WindowsDefender.exe"

C:\Windows\SYSTEM32\schtasks.exe

"schtasks" /create /tn "Windows Defender" /sc ONLOGON /tr "C:\Windows\system32\Windows\WindowsDefender.exe" /rl HIGHEST /f

C:\Windows\System32\rundll32.exe

C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding

C:\Windows\system32\svchost.exe

C:\Windows\system32\svchost.exe -k LocalService -p -s fdPHost

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 73.66.246.196:4782 tcp
US 73.66.246.196:4782 tcp
US 73.66.246.196:4782 tcp
N/A 239.255.255.250:3702 udp
N/A 239.255.255.250:3702 udp
US 8.8.8.8:53 c.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.f.f.ip6.arpa udp
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Files

memory/216-0-0x00007FF9FFBA3000-0x00007FF9FFBA5000-memory.dmp

memory/216-1-0x0000000000190000-0x00000000004B4000-memory.dmp

memory/216-2-0x00007FF9FFBA0000-0x00007FFA00661000-memory.dmp

C:\Windows\System32\Windows\WindowsDefender.exe

MD5 15666ecca39a4cd909eb57e66d3401c6
SHA1 3442a7c4c5a482f1b5ba12f43da299310a323ffb
SHA256 23b2736b81a4c1e470f4b03ce681656c43e109e73acccbcc6279589fb1b695a6
SHA512 49001f1f25cb8ce9a402a2b71c9ae46f795a798a9d7161dce7fc64aa470570503bd9ca3b8975c53ec76f190f5d54e360beb97b4cac35c038a400fc49ba04f213

memory/2996-10-0x00007FF9FFBA0000-0x00007FFA00661000-memory.dmp

memory/216-9-0x00007FF9FFBA0000-0x00007FFA00661000-memory.dmp

memory/2996-11-0x00007FF9FFBA0000-0x00007FFA00661000-memory.dmp

memory/2996-12-0x000000001B580000-0x000000001B5D0000-memory.dmp

memory/2996-13-0x000000001D610000-0x000000001D6C2000-memory.dmp

memory/2996-14-0x00007FF9FFBA0000-0x00007FFA00661000-memory.dmp