Analysis
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max time kernel
921s -
max time network
929s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
29-06-2024 23:18
Behavioral task
behavioral1
Sample
ControlLock.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
ControlLock.exe
Resource
win10v2004-20240508-en
General
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Target
ControlLock.exe
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Size
3.1MB
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MD5
15666ecca39a4cd909eb57e66d3401c6
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SHA1
3442a7c4c5a482f1b5ba12f43da299310a323ffb
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SHA256
23b2736b81a4c1e470f4b03ce681656c43e109e73acccbcc6279589fb1b695a6
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SHA512
49001f1f25cb8ce9a402a2b71c9ae46f795a798a9d7161dce7fc64aa470570503bd9ca3b8975c53ec76f190f5d54e360beb97b4cac35c038a400fc49ba04f213
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SSDEEP
49152:Sv+lL26AaNeWgPhlmVqvMQ7XSKbr4FLoGvpFbTHHB72eh2NT:SvuL26AaNeWgPhlmVqkQ7XSKbr4d
Malware Config
Extracted
quasar
1.4.1
ControlLock
73.66.246.196:4782
39766065-e590-4bf3-8b16-5588786c4cde
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encryption_key
FF6377F726ECA29603D169F2C250624963D66B79
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install_name
WindowsDefender.exe
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log_directory
Logs
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reconnect_delay
2000
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startup_key
Windows Defender
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subdirectory
Windows
Signatures
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Quasar payload 2 IoCs
Processes:
resource yara_rule behavioral2/memory/216-1-0x0000000000190000-0x00000000004B4000-memory.dmp family_quasar C:\Windows\System32\Windows\WindowsDefender.exe family_quasar -
Executes dropped EXE 1 IoCs
Processes:
WindowsDefender.exepid process 2996 WindowsDefender.exe -
Drops file in System32 directory 5 IoCs
Processes:
ControlLock.exeWindowsDefender.exedescription ioc process File created C:\Windows\system32\Windows\WindowsDefender.exe ControlLock.exe File opened for modification C:\Windows\system32\Windows\WindowsDefender.exe ControlLock.exe File opened for modification C:\Windows\system32\Windows ControlLock.exe File opened for modification C:\Windows\system32\Windows\WindowsDefender.exe WindowsDefender.exe File opened for modification C:\Windows\system32\Windows WindowsDefender.exe -
Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
Processes:
schtasks.exeschtasks.exepid process 4748 schtasks.exe 3032 schtasks.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
ControlLock.exeWindowsDefender.exedescription pid process Token: SeDebugPrivilege 216 ControlLock.exe Token: SeDebugPrivilege 2996 WindowsDefender.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
WindowsDefender.exepid process 2996 WindowsDefender.exe -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
ControlLock.exeWindowsDefender.exedescription pid process target process PID 216 wrote to memory of 3032 216 ControlLock.exe schtasks.exe PID 216 wrote to memory of 3032 216 ControlLock.exe schtasks.exe PID 216 wrote to memory of 2996 216 ControlLock.exe WindowsDefender.exe PID 216 wrote to memory of 2996 216 ControlLock.exe WindowsDefender.exe PID 2996 wrote to memory of 4748 2996 WindowsDefender.exe schtasks.exe PID 2996 wrote to memory of 4748 2996 WindowsDefender.exe schtasks.exe -
Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
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C:\Users\Admin\AppData\Local\Temp\ControlLock.exe"C:\Users\Admin\AppData\Local\Temp\ControlLock.exe"1⤵
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:216 -
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Windows Defender" /sc ONLOGON /tr "C:\Windows\system32\Windows\WindowsDefender.exe" /rl HIGHEST /f2⤵
- Scheduled Task/Job: Scheduled Task
PID:3032 -
C:\Windows\system32\Windows\WindowsDefender.exe"C:\Windows\system32\Windows\WindowsDefender.exe"2⤵
- Executes dropped EXE
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2996 -
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Windows Defender" /sc ONLOGON /tr "C:\Windows\system32\Windows\WindowsDefender.exe" /rl HIGHEST /f3⤵
- Scheduled Task/Job: Scheduled Task
PID:4748
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C:\Windows\System32\rundll32.exeC:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding1⤵PID:3664
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalService -p -s fdPHost1⤵PID:1304
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
3.1MB
MD515666ecca39a4cd909eb57e66d3401c6
SHA13442a7c4c5a482f1b5ba12f43da299310a323ffb
SHA25623b2736b81a4c1e470f4b03ce681656c43e109e73acccbcc6279589fb1b695a6
SHA51249001f1f25cb8ce9a402a2b71c9ae46f795a798a9d7161dce7fc64aa470570503bd9ca3b8975c53ec76f190f5d54e360beb97b4cac35c038a400fc49ba04f213