Analysis
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max time kernel
141s -
max time network
143s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
18/08/2024, 22:07
Behavioral task
behavioral1
Sample
fd96603f9b5aa63021f7bbf8cb6aa320154b43f53c62ddeb011a395327c6093e.exe
Resource
win7-20240704-en
General
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Target
fd96603f9b5aa63021f7bbf8cb6aa320154b43f53c62ddeb011a395327c6093e.exe
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Size
3.3MB
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MD5
7021b44ffa619a2a286dd9bd55d1e321
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SHA1
de69ec28f445e6c47b1d2f4440465f3ffc2df174
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SHA256
fd96603f9b5aa63021f7bbf8cb6aa320154b43f53c62ddeb011a395327c6093e
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SHA512
546909a07d8e229c0510c249c4b31c78d699a31130e9933ecc03cc2a1b4a7778bbcb872668aab8575050fe4b6c72715164f290a368dd6471e1c492393cf04f13
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SSDEEP
49152:G6LFXL5Z8hlPKxXavFTu9sHMI2jixTHHB72eh2NT1:G6p5Z8hlPKxXavFT+ssYc
Malware Config
Extracted
quasar
1.4.1
SKIDS
147.185.221.22:6712
d1acafd6-31e9-4a2f-a5a8-7043dfc62d60
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encryption_key
5678253D7FFD68D83D55A584486F1015D2B1BC30
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install_name
Windows Host Process.exe
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log_directory
Windows-Logs
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reconnect_delay
3000
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startup_key
Windows Host Process
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subdirectory
Windows
Signatures
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Quasar payload 2 IoCs
resource yara_rule behavioral2/memory/1956-1-0x00000000008D0000-0x0000000000C28000-memory.dmp family_quasar behavioral2/files/0x000800000002359c-6.dat family_quasar -
Executes dropped EXE 1 IoCs
pid Process 2320 Windows Host Process.exe -
Drops file in System32 directory 5 IoCs
description ioc Process File opened for modification C:\Windows\system32\Windows\Windows Host Process.exe fd96603f9b5aa63021f7bbf8cb6aa320154b43f53c62ddeb011a395327c6093e.exe File opened for modification C:\Windows\system32\Windows fd96603f9b5aa63021f7bbf8cb6aa320154b43f53c62ddeb011a395327c6093e.exe File opened for modification C:\Windows\system32\Windows\Windows Host Process.exe Windows Host Process.exe File opened for modification C:\Windows\system32\Windows Windows Host Process.exe File created C:\Windows\system32\Windows\Windows Host Process.exe fd96603f9b5aa63021f7bbf8cb6aa320154b43f53c62ddeb011a395327c6093e.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 2768 schtasks.exe 4280 schtasks.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 1956 fd96603f9b5aa63021f7bbf8cb6aa320154b43f53c62ddeb011a395327c6093e.exe Token: SeDebugPrivilege 2320 Windows Host Process.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 2320 Windows Host Process.exe -
Suspicious use of SendNotifyMessage 1 IoCs
pid Process 2320 Windows Host Process.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 2320 Windows Host Process.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 1956 wrote to memory of 2768 1956 fd96603f9b5aa63021f7bbf8cb6aa320154b43f53c62ddeb011a395327c6093e.exe 91 PID 1956 wrote to memory of 2768 1956 fd96603f9b5aa63021f7bbf8cb6aa320154b43f53c62ddeb011a395327c6093e.exe 91 PID 1956 wrote to memory of 2320 1956 fd96603f9b5aa63021f7bbf8cb6aa320154b43f53c62ddeb011a395327c6093e.exe 93 PID 1956 wrote to memory of 2320 1956 fd96603f9b5aa63021f7bbf8cb6aa320154b43f53c62ddeb011a395327c6093e.exe 93 PID 2320 wrote to memory of 4280 2320 Windows Host Process.exe 95 PID 2320 wrote to memory of 4280 2320 Windows Host Process.exe 95 -
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\fd96603f9b5aa63021f7bbf8cb6aa320154b43f53c62ddeb011a395327c6093e.exe"C:\Users\Admin\AppData\Local\Temp\fd96603f9b5aa63021f7bbf8cb6aa320154b43f53c62ddeb011a395327c6093e.exe"1⤵
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1956 -
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Windows Host Process" /sc ONLOGON /tr "C:\Windows\system32\Windows\Windows Host Process.exe" /rl HIGHEST /f2⤵
- Scheduled Task/Job: Scheduled Task
PID:2768
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C:\Windows\system32\Windows\Windows Host Process.exe"C:\Windows\system32\Windows\Windows Host Process.exe"2⤵
- Executes dropped EXE
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2320 -
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Windows Host Process" /sc ONLOGON /tr "C:\Windows\system32\Windows\Windows Host Process.exe" /rl HIGHEST /f3⤵
- Scheduled Task/Job: Scheduled Task
PID:4280
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4280,i,10065386245627775856,6567048529106473151,262144 --variations-seed-version --mojo-platform-channel-handle=1044 /prefetch:81⤵PID:2796
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
3.3MB
MD57021b44ffa619a2a286dd9bd55d1e321
SHA1de69ec28f445e6c47b1d2f4440465f3ffc2df174
SHA256fd96603f9b5aa63021f7bbf8cb6aa320154b43f53c62ddeb011a395327c6093e
SHA512546909a07d8e229c0510c249c4b31c78d699a31130e9933ecc03cc2a1b4a7778bbcb872668aab8575050fe4b6c72715164f290a368dd6471e1c492393cf04f13