Analysis
- user interaction
yes - max time kernel
149s - max time network
141s - platform
windows10-2004_x64 - resource
win10v2004-20260911-en - resource tags
- submitted
20/09/2026, 12:49
General
- Target Client-built.exe
- Size 3.2MB
- Sample260920-p2ndjsvs9p
- SHA256 73bbf2725c71944b029e8ca264769d348d0cdcc75a0f2749cfcc36b427e3fbac
Score
10/10
Malware Config
Extracted
Family
-
quasar
Version
-
1.4.1
Botnet
-
Office04
C2
-
127.0.0.1:4782
Mutex
-
bd60b3f9-e86c-4eef-b8fb-f688a608871c
Attributes
-
encryption_key
C2A2959F6FB18E9E60626AA7D069DCDF54C32464
-
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/4012-0-0x0000000000EE0000-0x000000000120C000-memory.dmp
memory/4012-1-0x000000001BF70000-0x000000001BF80000-memory.dmp
memory/4012-2-0x000000001D370000-0x000000001D3C0000-memory.dmp
memory/4012-3-0x000000001D480000-0x000000001D532000-memory.dmp
memory/4012-4-0x000000001BF70000-0x000000001BF80000-memory.dmp