Analysis
- max time kernel
149s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20240426-en - resource tags
- submitted
29/05/2024, 07:46
General
- Target KR6nDu9fLhop1bFe.exe
- Size 3.1MB
- Sample240529-jlylpafe4t
- SHA256 c509ea51e44a654f104ab9fb8e5d681a871159c73fcf3f666245e303387329b2
Malware Config
Extracted
-
quasar
-
1.4.1
-
Office04
-
31.177.108.29:4782
-
553dcf2c-4c70-4c0c-935a-2e078a46f03e
-
encryption_key
DAFF70D249B4EC619D5A052FDD3418E3549FF268
-
install_name
KR6nDu9fLhop1bFe.exe
-
log_directory
Logs
-
reconnect_delay
3000
-
startup_key
Defender.Process
-
subdirectory
SubDir
Signatures
- Quasar RAT
Quasar is an open source Remote Access Tool.
- Quasar payload 2 IoCs
- Executes dropped EXE 1 IoCs
- Creates scheduled task(s) 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\KR6nDu9fLhop1bFe.exe"C:\Users\Admin\AppData\Local\Temp\KR6nDu9fLhop1bFe.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Defender.Process" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\KR6nDu9fLhop1bFe.exe" /rl HIGHEST /f2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Roaming\SubDir\KR6nDu9fLhop1bFe.exe"C:\Users\Admin\AppData\Roaming\SubDir\KR6nDu9fLhop1bFe.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 "Defender.Process" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\KR6nDu9fLhop1bFe.exe" /rl HIGHEST /f3⤵
- Creates scheduled task(s)
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
KR6nDu9fLhop1bFe.exe.log
KR6nDu9fLhop1bFe.exe
memory/2904-10-0x00007FFFEC4F0000-0x00007FFFECFB1000-memory.dmp
memory/2904-12-0x00007FFFEC4F0000-0x00007FFFECFB1000-memory.dmp
memory/2904-13-0x000000001BA10000-0x000000001BA60000-memory.dmp
memory/2904-14-0x000000001BB20000-0x000000001BBD2000-memory.dmp
memory/2904-15-0x00007FFFEC4F0000-0x00007FFFECFB1000-memory.dmp
memory/3792-0-0x00007FFFEC4F3000-0x00007FFFEC4F5000-memory.dmp
memory/3792-1-0x0000000000B10000-0x0000000000E34000-memory.dmp
memory/3792-2-0x00007FFFEC4F0000-0x00007FFFECFB1000-memory.dmp
memory/3792-11-0x00007FFFEC4F0000-0x00007FFFECFB1000-memory.dmp