Analysis
- max time kernel
148s - max time network
139s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
- submitted
27/10/2026, 15:05
General
- Target bd29b8106ffdde93f23674752ecbbc143b5b92ea7c6f85a2cebc033dbe9eabe6.exe
- Size 348KB
- Sample261027-sgccbssw4l
- SHA256 bd29b8106ffdde93f23674752ecbbc143b5b92ea7c6f85a2cebc033dbe9eabe6
Malware Config
Extracted
-
quasar
-
1.3.0.0
-
Office04
-
85.121.5.9:1604
-
QSR_MUTEX_XzZ2Z3u9qZDMKak6tj
-
encryption_key
zaz5X5BP9QxO4guERqLE
-
install_name
Client.exe
-
key_salt
bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941
-
log_directory
Logs
-
reconnect_delay
3000
-
startup_key
Quasar Client Startup
-
subdirectory
SubDir
Signatures
- Family: Quasar RAT
Quasar is an open source Remote Access Tool.
- Quasar payload 1 IoCs
- Looks up external IP address via web service 1 TTPs 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs
The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.
- System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\bd29b8106ffdde93f23674752ecbbc143b5b92ea7c6f85a2cebc033dbe9eabe6.exe"C:\Users\Admin\AppData\Local\Temp\bd29b8106ffdde93f23674752ecbbc143b5b92ea7c6f85a2cebc033dbe9eabe6.exe"1⤵
- Reads the TCP/IP host and domain name from the registry
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
memory/1948-0-0x0000000074852000-0x0000000074853000-memory.dmp
memory/1948-1-0x00000000005E0000-0x000000000063E000-memory.dmp
memory/1948-2-0x0000000005790000-0x0000000005D4A000-memory.dmp
memory/1948-3-0x00000000051D0000-0x0000000005262000-memory.dmp
memory/1948-4-0x0000000074840000-0x0000000074FFC000-memory.dmp
memory/1948-5-0x0000000005270000-0x00000000052D6000-memory.dmp
memory/1948-6-0x00000000056E0000-0x00000000056F2000-memory.dmp
memory/1948-7-0x00000000063E0000-0x000000000641C000-memory.dmp
memory/1948-9-0x0000000006750000-0x000000000675A000-memory.dmp
memory/1948-10-0x0000000074852000-0x0000000074853000-memory.dmp
memory/1948-11-0x0000000074840000-0x0000000074FFC000-memory.dmp