Analysis
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max time kernel
123s -
max time network
131s -
platform
windows10-2004_x64 -
resource
win10v2004-20230703-en -
resource tags
arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system -
submitted
16/08/2023, 06:00
Static task
static1
Behavioral task
behavioral1
Sample
myproject.exe
Resource
win7-20230712-en
Behavioral task
behavioral2
Sample
myproject.exe
Resource
win10v2004-20230703-en
General
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Target
myproject.exe
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Size
1.9MB
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MD5
5d8857dfbf92c11e3d816e146a90574b
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SHA1
3bb590eba78454a49a81c1cd93b6111119defde1
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SHA256
9d3b91e313cc1183cbc94c36a1aa0b50e5a2e2178293240e935d5626c4994db2
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SHA512
c13dded3e6bc325e56db61e10cca634ca3e1ca0d04bb37cb3847530cd4d0b154b6dbc7bab12a7254590520f769f2c986ab7dadc65864e877f1932b05d342897a
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SSDEEP
49152:yq8O+4JhekmDCjyrZ9e1TsZbdJmkPzewFaxQXotaL:yqT+4JhvmDCurZ8FUlyPxQXota
Malware Config
Extracted
quasar
1.4.1
CLppso
5.249.163.32:4782
edaac5e2-2388-4258-a93c-28e31ebe3f2a
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encryption_key
124612CCBEAD0D1753510D04E4F680D28EF88CDD
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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 payload 1 IoCs
resource yara_rule behavioral2/memory/1208-1222-0x0000000000400000-0x0000000000724000-memory.dmp family_quasar -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3195054982-4292022746-1467505928-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winrar = "C:\\Users\\Admin\\AppData\\Roaming\\winrar.exe" myproject.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 3080 set thread context of 1208 3080 myproject.exe 86 -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 3080 myproject.exe 3080 myproject.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 3080 myproject.exe Token: SeDebugPrivilege 1208 MSBuild.exe -
Suspicious use of FindShellTrayWindow 2 IoCs
pid Process 1208 MSBuild.exe 1208 MSBuild.exe -
Suspicious use of SendNotifyMessage 2 IoCs
pid Process 1208 MSBuild.exe 1208 MSBuild.exe -
Suspicious use of WriteProcessMemory 11 IoCs
description pid Process procid_target PID 3080 wrote to memory of 3344 3080 myproject.exe 85 PID 3080 wrote to memory of 3344 3080 myproject.exe 85 PID 3080 wrote to memory of 3344 3080 myproject.exe 85 PID 3080 wrote to memory of 1208 3080 myproject.exe 86 PID 3080 wrote to memory of 1208 3080 myproject.exe 86 PID 3080 wrote to memory of 1208 3080 myproject.exe 86 PID 3080 wrote to memory of 1208 3080 myproject.exe 86 PID 3080 wrote to memory of 1208 3080 myproject.exe 86 PID 3080 wrote to memory of 1208 3080 myproject.exe 86 PID 3080 wrote to memory of 1208 3080 myproject.exe 86 PID 3080 wrote to memory of 1208 3080 myproject.exe 86
Processes
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C:\Users\Admin\AppData\Local\Temp\myproject.exe"C:\Users\Admin\AppData\Local\Temp\myproject.exe"1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3080 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exeC:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe2⤵PID:3344
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exeC:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe2⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:1208
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