Analysis
- max time kernel
149s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
- submitted
04/08/2026, 14:08
General
- Target Client-built.exe
- Size 3.1MB
- Sample260804-rfjvcabh92
- SHA256 329fb7d6ee2d707e53502078b09149f903624221a3ac8c559a1803d094e12add
Score
10/10
Malware Config
Extracted
Family
-
quasar
Version
-
1.4.1
Botnet
-
Office04
C2
-
10.0.0.30:4782
Mutex
-
d70ebc9d-3160-42f7-be67-e91a733deb44
Attributes
-
encryption_key
5A370FDFFF529CED9432804F75B4318027B2A7CE
-
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
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of FindShellTrayWindow 1 IoCs
- Suspicious use of SendNotifyMessage 1 IoCs
Processes
-
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
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
memory/1936-0-0x0000000000BA0000-0x0000000000EC4000-memory.dmp
memory/1936-1-0x000000001BB00000-0x000000001BB10000-memory.dmp
memory/1936-2-0x000000001DE30000-0x000000001DE80000-memory.dmp
memory/1936-3-0x000000001DF40000-0x000000001DFF2000-memory.dmp
memory/1936-4-0x000000001BB00000-0x000000001BB10000-memory.dmp