Analysis
- max time kernel
148s - max time network
127s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
- submitted
24/08/2026, 11:32
General
- Target a7d3824bc6d71e139aa8c3d77d47f9cc2c2367cba77f9302dc71fb8870f53608.exe
- Size 2.0MB
- Sample260824-nnct8axamd
- SHA256 a7d3824bc6d71e139aa8c3d77d47f9cc2c2367cba77f9302dc71fb8870f53608
Malware Config
Extracted
-
quasar
-
1.4.1
-
Office04
-
127.0.0.1:4782
-
356050cf-1ede-401f-a90a-adee8f8cc5b9
-
encryption_key
7D0629ED26A9B150801A13EB2431C45A6A2A2564
-
install_name
RuntimeBroker.exe.exe
-
key_salt
bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941
-
log_directory
Logs
-
reconnect_delay
3000
-
startup_key
OneDrive Sync
-
subdirectory
Microsoft\Windows
Signatures
- Family: Quasar RAT
Quasar is an open source Remote Access Tool.
- Quasar payload 1 IoCs
- Executes dropped EXE 2 IoCs
- ConfuserEx .NET packer 1 IoCs
Detects ConfuserEx .NET packer.
- Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious use of AdjustPrivilegeToken 3 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\a7d3824bc6d71e139aa8c3d77d47f9cc2c2367cba77f9302dc71fb8870f53608.exe"C:\Users\Admin\AppData\Local\Temp\a7d3824bc6d71e139aa8c3d77d47f9cc2c2367cba77f9302dc71fb8870f53608.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "OneDrive Sync" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\RuntimeBroker.exe.exe" /rl HIGHEST /f2⤵
- Scheduled Task/Job: Scheduled Task
-
-
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\RuntimeBroker.exe.exe"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\RuntimeBroker.exe.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\RuntimeBroker.exe.exeC:\Users\Admin\AppData\Roaming\Microsoft\Windows\RuntimeBroker.exe.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
-
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "OneDrive Sync" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\RuntimeBroker.exe.exe" /rl HIGHEST /f2⤵
- Scheduled Task/Job: Scheduled Task
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
RuntimeBroker.exe.exe
memory/1244-20-0x000000001B890000-0x000000001B8E0000-memory.dmp
memory/1244-21-0x000000001CC80000-0x000000001CD32000-memory.dmp
memory/4336-3-0x00007FFFFE960000-0x00007FFFFF304000-memory.dmp
memory/4336-4-0x00007FFFFE960000-0x00007FFFFF304000-memory.dmp
memory/4336-5-0x00007FFFFE960000-0x00007FFFFF304000-memory.dmp
memory/4336-6-0x00007FFFFE960000-0x00007FFFFF304000-memory.dmp
memory/4336-7-0x00007FFFFE960000-0x00007FFFFF304000-memory.dmp
memory/4336-8-0x000000001B9A0000-0x000000001BCC4000-memory.dmp
memory/4336-14-0x00007FFFFE960000-0x00007FFFFF304000-memory.dmp
memory/4336-0-0x0000000000540000-0x0000000000568000-memory.dmp
memory/4336-2-0x0000000000DC0000-0x0000000000DC6000-memory.dmp
memory/4336-1-0x00007FFFFEAEF000-0x00007FFFFEAF0000-memory.dmp
memory/4952-10-0x00007FFFFE960000-0x00007FFFFF304000-memory.dmp
memory/4952-13-0x00007FFFFE960000-0x00007FFFFF304000-memory.dmp
memory/4952-15-0x00007FFFFE960000-0x00007FFFFF304000-memory.dmp
memory/4952-16-0x00007FFFFE960000-0x00007FFFFF304000-memory.dmp
memory/4952-18-0x00007FFFFE960000-0x00007FFFFF304000-memory.dmp
memory/4952-19-0x00007FFFFE960000-0x00007FFFFF304000-memory.dmp
memory/4952-12-0x00007FFFFE960000-0x00007FFFFF304000-memory.dmp
memory/4952-11-0x00007FFFFE960000-0x00007FFFFF304000-memory.dmp
memory/4952-22-0x00007FFFFE960000-0x00007FFFFF304000-memory.dmp