Analysis
- max time kernel
145s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
- submitted
18/02/2023, 19:02
General
- Target tmp.exe
- Size 502KB
- Sample230218-xpsfqsdb74
- SHA256 741a3f8b91ad8ef7bf2936bafddb95200b0f3083a6933d1d82c278baaa6ec9c7
Malware Config
Extracted
-
quasar
-
1.4.0
-
Office04
-
flingmodder-53370.portmap.io:53370
-
c16cce68-0a86-440c-89b1-c088c1c8b4cb
-
encryption_key
9BFDFBA45AE2C2C16DA4EEEA02438784B89CACC0
-
install_name
svchost.exe
-
log_directory
Logs
-
reconnect_delay
3000
-
startup_key
svchost
-
subdirectory
windows
Signatures
- Quasar RAT
Quasar is an open source Remote Access Tool.
- Quasar payload 3 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
Processes
-
C:\Users\Admin\AppData\Local\Temp\tmp.exe"C:\Users\Admin\AppData\Local\Temp\tmp.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "svchost" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\tmp.exe" /rl HIGHEST /f2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Roaming\windows\svchost.exe"C:\Users\Admin\AppData\Roaming\windows\svchost.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 "svchost" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\windows\svchost.exe" /rl HIGHEST /f3⤵
- Creates scheduled task(s)
-
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
svchost.exe
svchost.exe
memory/1400-139-0x00007FFF7B9E0000-0x00007FFF7C4A1000-memory.dmp
memory/1400-141-0x000000001BBA0000-0x000000001BBF0000-memory.dmp
memory/1400-142-0x000000001DE40000-0x000000001DEF2000-memory.dmp
memory/1400-143-0x00007FFF7B9E0000-0x00007FFF7C4A1000-memory.dmp
memory/5072-132-0x0000000000070000-0x00000000000F4000-memory.dmp
memory/5072-133-0x00007FFF7B9E0000-0x00007FFF7C4A1000-memory.dmp
memory/5072-138-0x00007FFF7B9E0000-0x00007FFF7C4A1000-memory.dmp