Analysis
- max time kernel
90s - max time network
132s - platform
windows11-21h2_x64 - resource
win11-20240419-en - resource tags
- submitted
01/05/2024, 16:07
General
- Target 906745e760108f29a15f0a4b3db9b140cc9bd5376a4e721c0d96c3df73474f5c.exe
- Size 3.1MB
- Sample240501-tkwqtada25
- SHA256 906745e760108f29a15f0a4b3db9b140cc9bd5376a4e721c0d96c3df73474f5c
Malware Config
Extracted
-
quasar
-
1.4.1
-
Office04
-
93.123.85.108:4782
-
e14b8f59-979b-4ebf-8602-dd3c4d6c301e
-
encryption_key
534734397C0FA9A1D28F061AD75DF4100BFF5787
-
install_name
Msconfig.exe
-
log_directory
Logs
-
reconnect_delay
3000
-
startup_key
msconfig.exe
-
subdirectory
SubDir
Signatures
- Quasar RAT
Quasar is an open source Remote Access Tool.
- Quasar payload 2 IoCs
- Executes dropped EXE 1 IoCs
- Drops file in System32 directory 5 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
-
C:\Users\Admin\AppData\Local\Temp\906745e760108f29a15f0a4b3db9b140cc9bd5376a4e721c0d96c3df73474f5c.exe"C:\Users\Admin\AppData\Local\Temp\906745e760108f29a15f0a4b3db9b140cc9bd5376a4e721c0d96c3df73474f5c.exe"1⤵
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "msconfig.exe" /sc ONLOGON /tr "C:\Windows\system32\SubDir\Msconfig.exe" /rl HIGHEST /f2⤵
- Creates scheduled task(s)
-
-
C:\Windows\system32\SubDir\Msconfig.exe"C:\Windows\system32\SubDir\Msconfig.exe"2⤵
- Executes dropped EXE
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "msconfig.exe" /sc ONLOGON /tr "C:\Windows\system32\SubDir\Msconfig.exe" /rl HIGHEST /f3⤵
- Creates scheduled task(s)
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
Msconfig.exe
memory/1112-0-0x00007FFF91113000-0x00007FFF91115000-memory.dmp
memory/1112-1-0x0000000000A50000-0x0000000000D74000-memory.dmp
memory/1112-2-0x00007FFF91110000-0x00007FFF91BD2000-memory.dmp
memory/1112-10-0x00007FFF91110000-0x00007FFF91BD2000-memory.dmp
memory/4968-9-0x00007FFF91110000-0x00007FFF91BD2000-memory.dmp
memory/4968-11-0x00007FFF91110000-0x00007FFF91BD2000-memory.dmp
memory/4968-12-0x000000001B650000-0x000000001B6A0000-memory.dmp
memory/4968-13-0x000000001BED0000-0x000000001BF82000-memory.dmp
memory/4968-16-0x000000001BE10000-0x000000001BE22000-memory.dmp
memory/4968-17-0x000000001BE70000-0x000000001BEAC000-memory.dmp
memory/4968-18-0x00007FFF91110000-0x00007FFF91BD2000-memory.dmp