Analysis
- max time kernel
169s - max time network
176s - platform
windows10-2004_x64 - resource
win10v2004-20230915-en - resource tags
- submitted
14/10/2023, 01:40
General
- Target Client-built.exe
- Size 3.1MB
- Sample231014-b3hmsscb55
- SHA256 c153b68f86386c0dfb12ed0f6adc232c8067c590a6f30383d6ee4b862ecdda5f
Score
10/10
Malware Config
Extracted
Family
-
quasar
Version
-
1.4.1
Botnet
-
Office04
C2
-
5.tcp.eu.ngrok.io:16897
Mutex
-
73c047b7-c032-446f-90f6-cc6e67a3b53d
Attributes
-
encryption_key
1D0823E3B4FCFA9B913C3D7DF975ECF4B6C4C316
-
install_name
Crack.exe
-
log_directory
Logs
-
reconnect_delay
3000
-
startup_key
Client Startup
-
subdirectory
SubDir
Signatures
- Quasar RAT
Quasar is an open source Remote Access Tool.
- Quasar payload 1 IoCs
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 2 IoCs
- Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
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 WriteProcessMemory
-
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Crack.exe" /rl HIGHEST /f2⤵
- Creates scheduled task(s)
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
memory/4968-0-0x0000000000080000-0x00000000003A4000-memory.dmp
memory/4968-1-0x00007FFBC9930000-0x00007FFBCA3F1000-memory.dmp
memory/4968-2-0x0000000000B60000-0x0000000000B70000-memory.dmp
memory/4968-4-0x00007FFBC9930000-0x00007FFBCA3F1000-memory.dmp
memory/4968-5-0x0000000000B60000-0x0000000000B70000-memory.dmp