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Analysis
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max time kernel
119s -
max time network
121s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
31/12/2024, 13:39
Static task
static1
Behavioral task
behavioral1
Sample
d7113fad960575b0d0918e9f28e6a01b4b95bbb671c823352dc25b363fb7b8d4.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
d7113fad960575b0d0918e9f28e6a01b4b95bbb671c823352dc25b363fb7b8d4.exe
Resource
win10v2004-20241007-en
General
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Target
d7113fad960575b0d0918e9f28e6a01b4b95bbb671c823352dc25b363fb7b8d4.exe
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Size
480KB
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MD5
c18ce3e74ddb896c3d53bb186691ae31
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SHA1
03aff4a22449756b44c8214e32724f88df91b599
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SHA256
d7113fad960575b0d0918e9f28e6a01b4b95bbb671c823352dc25b363fb7b8d4
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SHA512
88acf31de158deead2dfb884e113acee73a5f913b65d64aba8fc3bf8db9c1d7c78ceaaf039153fc4619db7f1e0ab0323315f6e726f250851d0f16d675763306d
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SSDEEP
12288:iww6xvH9M3Ir55+JpWQbe6Ef4D+2u+4gnflehWf:inKP9M4r55+JAQGf4D+2tleAf
Malware Config
Extracted
quasar
1.3.0.0
svchost.exe
23.227.174.82:4782
QSR_MUTEX_UtaUPinApnyZsQXsVE
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encryption_key
hn8U0t79xWv7f03kzG79
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install_name
Client.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
Quasar Client Startup
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subdirectory
SubDir
Signatures
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Quasar family
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Quasar payload 4 IoCs
resource yara_rule behavioral1/memory/2452-12-0x0000000000090000-0x00000000000EE000-memory.dmp family_quasar behavioral1/memory/2452-13-0x0000000000090000-0x00000000000EE000-memory.dmp family_quasar behavioral1/memory/2452-20-0x0000000000090000-0x00000000000EE000-memory.dmp family_quasar behavioral1/memory/2452-17-0x0000000000090000-0x00000000000EE000-memory.dmp family_quasar -
Drops startup file 1 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\system.vbs d7113fad960575b0d0918e9f28e6a01b4b95bbb671c823352dc25b363fb7b8d4.exe -
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 2 ip-api.com -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 2552 set thread context of 2452 2552 d7113fad960575b0d0918e9f28e6a01b4b95bbb671c823352dc25b363fb7b8d4.exe 30 -
System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language d7113fad960575b0d0918e9f28e6a01b4b95bbb671c823352dc25b363fb7b8d4.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language RegAsm.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 2552 d7113fad960575b0d0918e9f28e6a01b4b95bbb671c823352dc25b363fb7b8d4.exe 2552 d7113fad960575b0d0918e9f28e6a01b4b95bbb671c823352dc25b363fb7b8d4.exe 2552 d7113fad960575b0d0918e9f28e6a01b4b95bbb671c823352dc25b363fb7b8d4.exe 2552 d7113fad960575b0d0918e9f28e6a01b4b95bbb671c823352dc25b363fb7b8d4.exe -
Suspicious behavior: MapViewOfSection 2 IoCs
pid Process 2552 d7113fad960575b0d0918e9f28e6a01b4b95bbb671c823352dc25b363fb7b8d4.exe 2552 d7113fad960575b0d0918e9f28e6a01b4b95bbb671c823352dc25b363fb7b8d4.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 2452 RegAsm.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 2452 RegAsm.exe -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 2552 wrote to memory of 2452 2552 d7113fad960575b0d0918e9f28e6a01b4b95bbb671c823352dc25b363fb7b8d4.exe 30 PID 2552 wrote to memory of 2452 2552 d7113fad960575b0d0918e9f28e6a01b4b95bbb671c823352dc25b363fb7b8d4.exe 30 PID 2552 wrote to memory of 2452 2552 d7113fad960575b0d0918e9f28e6a01b4b95bbb671c823352dc25b363fb7b8d4.exe 30 PID 2552 wrote to memory of 2452 2552 d7113fad960575b0d0918e9f28e6a01b4b95bbb671c823352dc25b363fb7b8d4.exe 30 PID 2552 wrote to memory of 2452 2552 d7113fad960575b0d0918e9f28e6a01b4b95bbb671c823352dc25b363fb7b8d4.exe 30 PID 2552 wrote to memory of 2452 2552 d7113fad960575b0d0918e9f28e6a01b4b95bbb671c823352dc25b363fb7b8d4.exe 30 PID 2552 wrote to memory of 2452 2552 d7113fad960575b0d0918e9f28e6a01b4b95bbb671c823352dc25b363fb7b8d4.exe 30 PID 2552 wrote to memory of 2452 2552 d7113fad960575b0d0918e9f28e6a01b4b95bbb671c823352dc25b363fb7b8d4.exe 30
Processes
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C:\Users\Admin\AppData\Local\Temp\d7113fad960575b0d0918e9f28e6a01b4b95bbb671c823352dc25b363fb7b8d4.exe"C:\Users\Admin\AppData\Local\Temp\d7113fad960575b0d0918e9f28e6a01b4b95bbb671c823352dc25b363fb7b8d4.exe"1⤵
- Drops startup file
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2552 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"C:\Users\Admin\AppData\Local\Temp\d7113fad960575b0d0918e9f28e6a01b4b95bbb671c823352dc25b363fb7b8d4.exe"2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:2452
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