Analysis
- max time kernel
142s - max time network
147s - platform
windows10-2004_x64 - resource
win10v2004-20230703-en - resource tags
- submitted
08/07/2023, 10:42
General
- Target 16888128718a66611c1d86e124ae32ce868c14233d207214cb76b4db455b61ec5560997b29281.dat-decoded.exe
- Size 348KB
- Sample230708-mrnkfsec84
- SHA256 b8eda4e9e691fe7017981cea833b63299ea6b89e08f3995b630cf705a393d16b
Malware Config
Extracted
-
quasar
-
1.3.0.0
-
Office04
-
qrss.duckdns.org:54790
-
QSR_MUTEX_zlSKJvcuVjgb1gOk4J
-
encryption_key
vUOWxZSgsTmyyUM9Rgsw
-
install_name
Client.exe
-
log_directory
Logs
-
reconnect_delay
3000
-
startup_key
Quasar Client Startup
-
subdirectory
SubDir
Signatures
- Quasar RAT
Quasar is an open source Remote Access Tool.
- Quasar payload 1 IoCs
- Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\16888128718a66611c1d86e124ae32ce868c14233d207214cb76b4db455b61ec5560997b29281.dat-decoded.exe"C:\Users\Admin\AppData\Local\Temp\16888128718a66611c1d86e124ae32ce868c14233d207214cb76b4db455b61ec5560997b29281.dat-decoded.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Matrix
Replay Monitor
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Downloads
memory/1616-133-0x0000000000930000-0x000000000098E000-memory.dmp
memory/1616-134-0x0000000005850000-0x0000000005DF4000-memory.dmp
memory/1616-135-0x00000000053D0000-0x0000000005462000-memory.dmp
memory/1616-136-0x0000000005320000-0x0000000005330000-memory.dmp
memory/1616-137-0x0000000005770000-0x00000000057D6000-memory.dmp
memory/1616-138-0x0000000006380000-0x0000000006392000-memory.dmp
memory/1616-139-0x00000000067A0000-0x00000000067DC000-memory.dmp
memory/1616-141-0x0000000006B30000-0x0000000006B3A000-memory.dmp
memory/1616-142-0x0000000005320000-0x0000000005330000-memory.dmp