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Analysis
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max time kernel
149s -
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
12/12/2024, 12:33
Behavioral task
behavioral1
Sample
e423c72ea1a279e367f4f0a3dc7d703c67f6d09009ed9d58f9c73dac35d0a85c.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
e423c72ea1a279e367f4f0a3dc7d703c67f6d09009ed9d58f9c73dac35d0a85c.exe
Resource
win10v2004-20241007-en
General
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Target
e423c72ea1a279e367f4f0a3dc7d703c67f6d09009ed9d58f9c73dac35d0a85c.exe
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Size
3.1MB
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MD5
bedd5e5f44b78c79f93e29dc184cfa3d
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SHA1
11e7e692b9a6b475f8561f283b2dd59c3cd19bfd
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SHA256
e423c72ea1a279e367f4f0a3dc7d703c67f6d09009ed9d58f9c73dac35d0a85c
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SHA512
3a7924196830b52d4525b897f45feb52ec2aca6cd20437b38437f171424450fd25692bd4c67ccde2cf147f0ed6efcef395ea0e13b24f0cf606214b58cf8284de
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SSDEEP
49152:IvzlL26AaNeWgPhlmVqvMQ7XSKzFxNESEtk/iPLoGdVTHHB72eh2NTRR:IvpL26AaNeWgPhlmVqkQ7XSKBxgTE
Malware Config
Extracted
quasar
1.4.1
powerstealer
192.168.56.1:4782
6760d0e9-9df9-4aba-89be-4e5ce3e92cc8
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encryption_key
057FCAF700E62ACFECC7338C474084AF9B47ABEB
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install_name
powerstealer.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 2 IoCs
resource yara_rule behavioral2/memory/1712-1-0x0000000000C40000-0x0000000000F6A000-memory.dmp family_quasar behavioral2/files/0x000a000000023b93-6.dat family_quasar -
Executes dropped EXE 1 IoCs
pid Process 4524 powerstealer.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 4860 schtasks.exe 1140 schtasks.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 1712 e423c72ea1a279e367f4f0a3dc7d703c67f6d09009ed9d58f9c73dac35d0a85c.exe Token: SeDebugPrivilege 4524 powerstealer.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 4524 powerstealer.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 1712 wrote to memory of 4860 1712 e423c72ea1a279e367f4f0a3dc7d703c67f6d09009ed9d58f9c73dac35d0a85c.exe 83 PID 1712 wrote to memory of 4860 1712 e423c72ea1a279e367f4f0a3dc7d703c67f6d09009ed9d58f9c73dac35d0a85c.exe 83 PID 1712 wrote to memory of 4524 1712 e423c72ea1a279e367f4f0a3dc7d703c67f6d09009ed9d58f9c73dac35d0a85c.exe 85 PID 1712 wrote to memory of 4524 1712 e423c72ea1a279e367f4f0a3dc7d703c67f6d09009ed9d58f9c73dac35d0a85c.exe 85 PID 4524 wrote to memory of 1140 4524 powerstealer.exe 86 PID 4524 wrote to memory of 1140 4524 powerstealer.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\e423c72ea1a279e367f4f0a3dc7d703c67f6d09009ed9d58f9c73dac35d0a85c.exe"C:\Users\Admin\AppData\Local\Temp\e423c72ea1a279e367f4f0a3dc7d703c67f6d09009ed9d58f9c73dac35d0a85c.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1712 -
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\powerstealer.exe" /rl HIGHEST /f2⤵
- Scheduled Task/Job: Scheduled Task
PID:4860
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C:\Users\Admin\AppData\Roaming\SubDir\powerstealer.exe"C:\Users\Admin\AppData\Roaming\SubDir\powerstealer.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4524 -
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\powerstealer.exe" /rl HIGHEST /f3⤵
- Scheduled Task/Job: Scheduled Task
PID:1140
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
3.1MB
MD5bedd5e5f44b78c79f93e29dc184cfa3d
SHA111e7e692b9a6b475f8561f283b2dd59c3cd19bfd
SHA256e423c72ea1a279e367f4f0a3dc7d703c67f6d09009ed9d58f9c73dac35d0a85c
SHA5123a7924196830b52d4525b897f45feb52ec2aca6cd20437b38437f171424450fd25692bd4c67ccde2cf147f0ed6efcef395ea0e13b24f0cf606214b58cf8284de