Analysis
- max time kernel
297s - max time network
301s - platform
windows10-2004_x64 - resource
win10v2004-20240611-en - resource tags
- submitted
30/06/2024, 14:46
General
- Target Client-built.exe
- Size 3.1MB
- Sample240630-r5d1dssgrn
- SHA256 aeea5611efcebc1112055000624ea27dbd3d9a05dae851732a983e7ec287b190
Malware Config
Extracted
-
quasar
-
1.4.1
-
Spoffer Fivem
-
pringelsy-53072.portmap.host:53072
-
c70aabf1-c896-42de-8406-22e4348930d6
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encryption_key
3107DF2D44BB6914C55BEA57D100135AB0F278DF
-
install_name
alg.exe
-
log_directory
Logs
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reconnect_delay
799
-
startup_key
Quasar Client Startup
-
subdirectory
Common Files
Signatures
- Quasar RAT
Quasar is an open source Remote Access Tool.
- Quasar payload 2 IoCs
- Executes dropped EXE 1 IoCs
- Drops file in Program Files directory 5 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Scheduled Task/Job: Scheduled Task 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 FindShellTrayWindow 1 IoCs
- Suspicious use of SendNotifyMessage 1 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\Client-built.exe"C:\Users\Admin\AppData\Local\Temp\Client-built.exe"1⤵
- Drops file in Program Files directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Program Files\Common Files\alg.exe" /rl HIGHEST /f2⤵
- Scheduled Task/Job: Scheduled Task
-
-
C:\Program Files\Common Files\alg.exe"C:\Program Files\Common Files\alg.exe"2⤵
- Executes dropped EXE
- Drops file in Program Files directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Program Files\Common Files\alg.exe" /rl HIGHEST /f3⤵
- Scheduled Task/Job: Scheduled Task
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
alg.exe
memory/620-0-0x00007FFC718A3000-0x00007FFC718A5000-memory.dmp
memory/620-1-0x00000000002A0000-0x00000000005C4000-memory.dmp
memory/620-2-0x00007FFC718A0000-0x00007FFC72361000-memory.dmp
memory/620-10-0x00007FFC718A0000-0x00007FFC72361000-memory.dmp
memory/5008-9-0x00007FFC718A0000-0x00007FFC72361000-memory.dmp
memory/5008-11-0x00007FFC718A0000-0x00007FFC72361000-memory.dmp
memory/5008-12-0x000000001CA10000-0x000000001CA60000-memory.dmp
memory/5008-13-0x000000001CB20000-0x000000001CBD2000-memory.dmp
memory/5008-14-0x000000001D450000-0x000000001D978000-memory.dmp
memory/5008-16-0x00007FFC718A0000-0x00007FFC72361000-memory.dmp
memory/5008-17-0x00007FFC718A0000-0x00007FFC72361000-memory.dmp