Analysis
- max time kernel
149s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
- submitted
15/10/2024, 13:36
General
- Target ImageLoggerBuilder.exe
- Size 3.1MB
- Sample241015-qwlhfa1err
- SHA256 daa3f7da87d7d0a9e89e37e00cbf7d68f41c392e55c16588d86fbfe15406f981
Malware Config
Extracted
-
quasar
-
1.4.1
-
Office04
-
Aynamit-53930.portmap.host:53930
-
20799118-be82-4ec0-be46-759a8a7007bd
-
encryption_key
24BF5EBAC408B98EE3BE14F25880AD637D4DA3F0
-
install_name
Client.exe
-
log_directory
Logs
-
reconnect_delay
3000
-
startup_key
Quasar Client Startup
-
subdirectory
SubDir
Signatures
- Quasar RAT
Quasar is an open source Remote Access Tool.
- Quasar payload 2 IoCs
- Executes dropped EXE 1 IoCs
- 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 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 6 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\ImageLoggerBuilder.exe"C:\Users\Admin\AppData\Local\Temp\ImageLoggerBuilder.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f2⤵
- Scheduled Task/Job: Scheduled Task
-
-
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f3⤵
- Scheduled Task/Job: Scheduled Task
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
Client.exe
memory/1800-9-0x00007FFFCD2F0000-0x00007FFFCDDB1000-memory.dmp
memory/1800-11-0x00007FFFCD2F0000-0x00007FFFCDDB1000-memory.dmp
memory/1800-12-0x000000001C020000-0x000000001C070000-memory.dmp
memory/1800-13-0x000000001C130000-0x000000001C1E2000-memory.dmp
memory/1800-14-0x00007FFFCD2F0000-0x00007FFFCDDB1000-memory.dmp
memory/3204-0-0x00007FFFCD2F3000-0x00007FFFCD2F5000-memory.dmp
memory/3204-1-0x0000000000080000-0x00000000003A4000-memory.dmp
memory/3204-2-0x00007FFFCD2F0000-0x00007FFFCDDB1000-memory.dmp
memory/3204-10-0x00007FFFCD2F0000-0x00007FFFCDDB1000-memory.dmp