Analysis
- max time kernel
93s - max time network
128s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
31/03/2024, 16:50
General
- Target Quasar v1.4.1/client.exe
- Size 3.1MB
- Sample240331-vcnwnsfc2s
- SHA256 8fb6ae3496d4ac025eab443d3e322b0faa3461d25b54093c9205d35746e3250e
Score
10/10
Malware Config
Extracted
Family
-
quasar
Attributes
-
reconnect_delay
5000
Signatures
- Quasar RAT
Quasar is an open source Remote Access Tool.
- Quasar payload 1 IoCs
- Drops desktop.ini file(s) 1 IoCs
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Modifies registry class 1 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Quasar v1.4.1\client.exe"C:\Users\Admin\AppData\Local\Temp\Quasar v1.4.1\client.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
-
C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k BcastDVRUserService -s BcastDVRUserService1⤵
- Drops desktop.ini file(s)
- Checks processor information in registry
- Modifies registry class
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
desktop.ini
memory/1800-0-0x0000000000140000-0x000000000046A000-memory.dmp
memory/1800-1-0x00007FFB11B70000-0x00007FFB12631000-memory.dmp
memory/1800-2-0x0000000002620000-0x0000000002630000-memory.dmp
memory/1800-4-0x00007FFB11B70000-0x00007FFB12631000-memory.dmp