Analysis
- max time kernel
149s - max time network
153s - platform
windows10-2004_x64 - resource
win10v2004-20240802-en - resource tags
- submitted
11/08/2024, 12:26
General
- Target 121e3dfed2bab3ab98212b0a8754e5c55b3b0c716629570710b397f5669a4a11.exe
- Size 502KB
- Sample240811-pmgmfstdmh
- SHA256 121e3dfed2bab3ab98212b0a8754e5c55b3b0c716629570710b397f5669a4a11
Malware Config
Extracted
-
quasar
-
1.4.0
-
skii
-
192.168.0.100:4782
-
192.168.0.1:4782
-
9884c0dc-67ea-466d-b3e0-2223605a890f
-
encryption_key
E46ED54E8C8D832A530A26F9A70515E931AA70C4
-
install_name
unix.exe
-
log_directory
Logs
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reconnect_delay
3000
-
startup_key
Quasar Client Startup
-
subdirectory
SubDir
Signatures
- Quasar RAT
Quasar is an open source Remote Access Tool.
- Quasar payload 2 IoCs
- Executes dropped EXE 1 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
-
C:\Users\Admin\AppData\Local\Temp\121e3dfed2bab3ab98212b0a8754e5c55b3b0c716629570710b397f5669a4a11.exe"C:\Users\Admin\AppData\Local\Temp\121e3dfed2bab3ab98212b0a8754e5c55b3b0c716629570710b397f5669a4a11.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\121e3dfed2bab3ab98212b0a8754e5c55b3b0c716629570710b397f5669a4a11.exe" /rl HIGHEST /f2⤵
- Scheduled Task/Job: Scheduled Task
-
-
C:\Users\Admin\AppData\Roaming\SubDir\unix.exe"C:\Users\Admin\AppData\Roaming\SubDir\unix.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\unix.exe" /rl HIGHEST /f3⤵
- Scheduled Task/Job: Scheduled Task
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
unix.exe
memory/400-0-0x00007FFC34263000-0x00007FFC34265000-memory.dmp
memory/400-1-0x0000000000940000-0x00000000009C4000-memory.dmp
memory/400-2-0x00007FFC34260000-0x00007FFC34D21000-memory.dmp
memory/400-9-0x00007FFC34260000-0x00007FFC34D21000-memory.dmp
memory/2516-8-0x00007FFC34260000-0x00007FFC34D21000-memory.dmp
memory/2516-10-0x00007FFC34260000-0x00007FFC34D21000-memory.dmp
memory/2516-11-0x000000001C000000-0x000000001C050000-memory.dmp
memory/2516-12-0x000000001C110000-0x000000001C1C2000-memory.dmp
memory/2516-13-0x00007FFC34260000-0x00007FFC34D21000-memory.dmp
memory/2516-14-0x00007FFC34260000-0x00007FFC34D21000-memory.dmp