Analysis
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max time kernel
126s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
18-12-2024 03:07
Behavioral task
behavioral1
Sample
942e216bf41aea0642c7f219560630dc21d29219920e90be79e990e6387a3a9a.exe
Resource
win7-20240903-en
General
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Target
942e216bf41aea0642c7f219560630dc21d29219920e90be79e990e6387a3a9a.exe
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Size
3.1MB
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MD5
c3e8ea545254bb9d01bff3f53668e04f
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SHA1
84bfec02d33d829736407744504c271f71c21078
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SHA256
942e216bf41aea0642c7f219560630dc21d29219920e90be79e990e6387a3a9a
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SHA512
84933b3fc7a888673079c2fccf987189777fc20831eb76cc3f4b94cf960c0c74831b98892781f2e9053c97de7818922fd6a950a8aaccaf696903b536972f0b38
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SSDEEP
49152:OUd1/DM2zv8aMlqCPwln5+Hjdh+Euvr9+VZzNAxoGnjwTHHB72eh2NTe:OUPrM2zEaMlqCPwln5+Ddh+Zvr4zq1k
Malware Config
Extracted
quasar
1.4.1
rat1
147.185.221.24:15249
da67ff1b-f911-4ad4-a51c-c7c5bd13aeb3
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encryption_key
AB7A97D9E0F9B0A44190A0D500EAB7AF37629802
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install_name
System32.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
System32
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subdirectory
System32
Signatures
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Quasar family
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Quasar payload 2 IoCs
resource yara_rule behavioral2/memory/2468-1-0x0000000000900000-0x0000000000C24000-memory.dmp family_quasar behavioral2/files/0x000a000000023b31-5.dat family_quasar -
Executes dropped EXE 1 IoCs
pid Process 3264 System32.exe -
Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 5072 schtasks.exe 1496 schtasks.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 2468 942e216bf41aea0642c7f219560630dc21d29219920e90be79e990e6387a3a9a.exe Token: SeDebugPrivilege 3264 System32.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 3264 System32.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 2468 wrote to memory of 5072 2468 942e216bf41aea0642c7f219560630dc21d29219920e90be79e990e6387a3a9a.exe 83 PID 2468 wrote to memory of 5072 2468 942e216bf41aea0642c7f219560630dc21d29219920e90be79e990e6387a3a9a.exe 83 PID 2468 wrote to memory of 3264 2468 942e216bf41aea0642c7f219560630dc21d29219920e90be79e990e6387a3a9a.exe 85 PID 2468 wrote to memory of 3264 2468 942e216bf41aea0642c7f219560630dc21d29219920e90be79e990e6387a3a9a.exe 85 PID 3264 wrote to memory of 1496 3264 System32.exe 86 PID 3264 wrote to memory of 1496 3264 System32.exe 86 -
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\942e216bf41aea0642c7f219560630dc21d29219920e90be79e990e6387a3a9a.exe"C:\Users\Admin\AppData\Local\Temp\942e216bf41aea0642c7f219560630dc21d29219920e90be79e990e6387a3a9a.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2468 -
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "System32" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\System32\System32.exe" /rl HIGHEST /f2⤵
- Scheduled Task/Job: Scheduled Task
PID:5072
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C:\Users\Admin\AppData\Roaming\System32\System32.exe"C:\Users\Admin\AppData\Roaming\System32\System32.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3264 -
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "System32" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\System32\System32.exe" /rl HIGHEST /f3⤵
- Scheduled Task/Job: Scheduled Task
PID:1496
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
3.1MB
MD5c3e8ea545254bb9d01bff3f53668e04f
SHA184bfec02d33d829736407744504c271f71c21078
SHA256942e216bf41aea0642c7f219560630dc21d29219920e90be79e990e6387a3a9a
SHA51284933b3fc7a888673079c2fccf987189777fc20831eb76cc3f4b94cf960c0c74831b98892781f2e9053c97de7818922fd6a950a8aaccaf696903b536972f0b38