Analysis
- max time kernel
148s - max time network
144s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
- submitted
27/10/2026, 14:21
General
- Target Client.exe
- Size 348KB
- Sample261027-rn38ysvsaz
- SHA256 36e185f1c669491893c7416e24a6d323f10730b7386ca204fd92266391b0d9e6
Malware Config
Extracted
-
quasar
-
1.3.0.0
-
Office04
-
94.103.188.169:1604
-
QSR_MUTEX_c2yQ3xz7Wy5A74wvOk
-
encryption_key
MNk61iOXigeYRF42iO0A
-
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\Client.exe"C:\Users\Admin\AppData\Local\Temp\Client.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/3064-0-0x0000000074B82000-0x0000000074B83000-memory.dmp
memory/3064-1-0x0000000000C70000-0x0000000000CCE000-memory.dmp
memory/3064-2-0x0000000005E30000-0x00000000063EA000-memory.dmp
memory/3064-3-0x0000000005750000-0x00000000057E2000-memory.dmp
memory/3064-4-0x0000000074B70000-0x000000007532C000-memory.dmp
memory/3064-5-0x00000000057F0000-0x0000000005856000-memory.dmp
memory/3064-6-0x00000000063F0000-0x0000000006402000-memory.dmp
memory/3064-7-0x0000000006920000-0x000000000695C000-memory.dmp
memory/3064-9-0x0000000006CA0000-0x0000000006CAA000-memory.dmp
memory/3064-10-0x0000000074B82000-0x0000000074B83000-memory.dmp
memory/3064-11-0x0000000074B70000-0x000000007532C000-memory.dmp