Analysis
- max time kernel
142s - max time network
153s - platform
windows10-2004_x64 - resource
win10v2004-20230703-en - resource tags
- submitted
10/08/2023, 03:24
General
- Target 50ffb7f0b2f5dfc06f320ec867b034306aba442c794e0aac63d478955aa0b0ad.exe
- Size 502KB
- Sample230810-dygaaaba6z
- SHA256 50ffb7f0b2f5dfc06f320ec867b034306aba442c794e0aac63d478955aa0b0ad
Malware Config
Extracted
-
quasar
-
1.4.0
-
Office04
-
78.174.118.185:4782
-
739cdb7d-2c7d-4192-b4b8-428c9ee2762e
-
encryption_key
DE9BB5CF6728C08EA1AAA6D3B9604754BDCFE733
-
install_name
zula.exe
-
log_directory
Logs
-
reconnect_delay
3000
-
startup_key
Quasar Client Startup
-
subdirectory
hack
Signatures
- Quasar RAT
Quasar is an open source Remote Access Tool.
- Quasar payload 3 IoCs
- Executes dropped EXE 1 IoCs
- Drops file in System32 directory 2 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- 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 2 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\50ffb7f0b2f5dfc06f320ec867b034306aba442c794e0aac63d478955aa0b0ad.exe"C:\Users\Admin\AppData\Local\Temp\50ffb7f0b2f5dfc06f320ec867b034306aba442c794e0aac63d478955aa0b0ad.exe"1⤵
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\system32\hack\zula.exe"C:\Windows\system32\hack\zula.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
zula.exe
zula.exe
memory/1364-133-0x0000000000290000-0x0000000000314000-memory.dmp
memory/1364-134-0x00007FFAFF860000-0x00007FFB00321000-memory.dmp
memory/1364-135-0x000000001B050000-0x000000001B060000-memory.dmp
memory/1364-142-0x00007FFAFF860000-0x00007FFB00321000-memory.dmp
memory/2280-141-0x00007FFAFF860000-0x00007FFB00321000-memory.dmp
memory/2280-143-0x000000001AF80000-0x000000001AF90000-memory.dmp
memory/2280-144-0x000000001BAB0000-0x000000001BB00000-memory.dmp
memory/2280-145-0x000000001BBC0000-0x000000001BC72000-memory.dmp
memory/2280-146-0x00007FFAFF860000-0x00007FFB00321000-memory.dmp
memory/2280-147-0x000000001AF80000-0x000000001AF90000-memory.dmp