Analysis
- max time kernel
149s - max time network
156s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
05/05/2024, 01:16
General
- Target a164c6db130d252098f00911125ef000567b60e1989a3f270746b0e01346ed1c.exe
- Size 3.1MB
- Sample240505-bm6dxsdb83
- SHA256 a164c6db130d252098f00911125ef000567b60e1989a3f270746b0e01346ed1c
Malware Config
Extracted
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quasar
-
1.4.1
-
Office024
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161.35.56.10:8787
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39473175-876b-4cb1-a4ee-60d5e21fc73e
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encryption_key
7E65859BA8EFE6EF43F9FCCE8B632D7E0E4A580E
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install_name
syncq.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
syncq
-
subdirectory
SubDir
Signatures
- Quasar RAT
Quasar is an open source Remote Access Tool.
- Quasar payload 2 IoCs
- Detects Windows executables referencing non-Windows User-Agents 2 IoCs
- Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 2 IoCs
- Detects executables containing common artifacts observed in infostealers 2 IoCs
- Executes dropped EXE 1 IoCs
- Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 6 IoCs
- 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\a164c6db130d252098f00911125ef000567b60e1989a3f270746b0e01346ed1c.exe"C:\Users\Admin\AppData\Local\Temp\a164c6db130d252098f00911125ef000567b60e1989a3f270746b0e01346ed1c.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "syncq" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\syncq.exe" /rl HIGHEST /f2⤵
- Creates scheduled task(s)
-
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C:\Users\Admin\AppData\Roaming\SubDir\syncq.exe"C:\Users\Admin\AppData\Roaming\SubDir\syncq.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "syncq" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\syncq.exe" /rl HIGHEST /f3⤵
- Creates scheduled task(s)
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-
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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 --no-appcompat-clear --mojo-platform-channel-handle=3996 --field-trial-handle=2280,i,1836084024518340990,18250262151825427757,262144 --variations-seed-version /prefetch:81⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
syncq.exe
memory/3296-0-0x00007FFD84573000-0x00007FFD84575000-memory.dmp
memory/3296-1-0x0000000000BB0000-0x0000000000ED4000-memory.dmp
memory/3296-2-0x00007FFD84570000-0x00007FFD85031000-memory.dmp
memory/3296-10-0x00007FFD84570000-0x00007FFD85031000-memory.dmp
memory/4832-9-0x00007FFD84570000-0x00007FFD85031000-memory.dmp
memory/4832-11-0x00007FFD84570000-0x00007FFD85031000-memory.dmp
memory/4832-12-0x000000001BB40000-0x000000001BB90000-memory.dmp
memory/4832-13-0x000000001BC50000-0x000000001BD02000-memory.dmp
memory/4832-14-0x00007FFD84570000-0x00007FFD85031000-memory.dmp
memory/4832-15-0x00007FFD84570000-0x00007FFD85031000-memory.dmp