Analysis
- max time kernel
150s - max time network
126s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
- submitted
03/08/2026, 15:05
General
- Target Client-built.exe
- Size 3.1MB
- Sample260803-sf66baseka
- SHA256 db2dab1737a1c4fb319facfc5762d11e1a898ebc52e2d587123273aceab819eb
Malware Config
Extracted
-
quasar
-
1.4.1
-
Office04
-
172.111.134.94:4782
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bce5a84f-00ac-4478-9b5f-f88136388035
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encryption_key
4007C7F5BE6F76DE717640B65A04C8074D917CE5
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install_name
Client.exe
-
key_salt
bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941
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log_directory
Logs
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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
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Executes a command shell one-liner 1 TTPs 1 IoCs
Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.
- System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs
Adversaries may check for Internet connectivity on compromised systems.
- Runs ping.exe 1 TTPs 1 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of FindShellTrayWindow 4 IoCs
- Suspicious use of SendNotifyMessage 4 IoCs
- Suspicious use of WriteProcessMemory 3 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\Client-built.exe"C:\Users\Admin\AppData\Local\Temp\Client-built.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\kiod2MgN0Drt.bat" "2⤵
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\chcp.comchcp 650013⤵
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C:\Windows\system32\PING.EXEping -n 10 localhost3⤵
- System Network Configuration Discovery: Internet Connection Discovery
- Runs ping.exe
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k GPSvcGroup1⤵
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
kiod2MgN0Drt.bat
memory/4636-12-0x00007FFA95970000-0x00007FFA96314000-memory.dmp
memory/4636-7-0x00007FFA95970000-0x00007FFA96314000-memory.dmp
memory/4636-3-0x00007FFA95970000-0x00007FFA96314000-memory.dmp
memory/4636-4-0x00007FFA95970000-0x00007FFA96314000-memory.dmp
memory/4636-5-0x00007FFA95970000-0x00007FFA96314000-memory.dmp
memory/4636-6-0x00007FFA95970000-0x00007FFA96314000-memory.dmp
memory/4636-0-0x00007FFA95AFF000-0x00007FFA95B00000-memory.dmp
memory/4636-8-0x00007FFA95970000-0x00007FFA96314000-memory.dmp
memory/4636-9-0x00007FFA95970000-0x00007FFA96314000-memory.dmp
memory/4636-10-0x00007FFA95970000-0x00007FFA96314000-memory.dmp
memory/4636-2-0x00007FFA95970000-0x00007FFA96314000-memory.dmp
memory/4636-11-0x00007FFA95970000-0x00007FFA96314000-memory.dmp
memory/4636-17-0x00007FFA95970000-0x00007FFA96314000-memory.dmp
memory/4636-14-0x00007FFA95970000-0x00007FFA96314000-memory.dmp
memory/4636-15-0x000000001D220000-0x000000001D270000-memory.dmp
memory/4636-16-0x000000001D330000-0x000000001D3E2000-memory.dmp
memory/4636-13-0x00007FFA95970000-0x00007FFA96314000-memory.dmp
memory/4636-18-0x000000001D290000-0x000000001D2A2000-memory.dmp
memory/4636-19-0x000000001D2F0000-0x000000001D32C000-memory.dmp
memory/4636-20-0x000000001DC40000-0x000000001DD30000-memory.dmp
memory/4636-25-0x000000001DC40000-0x000000001DD30000-memory.dmp
memory/4636-1-0x0000000000B30000-0x0000000000E54000-memory.dmp
memory/4636-39-0x000000001DC40000-0x000000001DD30000-memory.dmp
memory/4636-40-0x00007FFA95970000-0x00007FFA96314000-memory.dmp