Analysis
- max time kernel
146s - max time network
153s - platform
windows10-2004_x64 - resource
win10v2004-20240412-en - resource tags
- submitted
18/04/2024, 12:11
General
- Target agent64.exe
- Size 3.1MB
- Sample240418-pc5arsch46
- SHA256 6f4dd3d2ea6b1310b9c9e2063aba85396ea82e63f777a5dd5b42dac67c0ae630
Malware Config
Extracted
-
quasar
-
1.4.1
-
God
-
88.209.197.253:4782
-
5b9901b6-5e69-4eaa-a9f2-55ce43b72785
-
encryption_key
CEAEA9FD2F3E18352164BB4D9A6F56EFF5E2D896
-
install_name
COM Surrogate.exe
-
log_directory
Logs
-
reconnect_delay
3000
-
startup_key
Update
-
subdirectory
System32
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\agent64.exe"C:\Users\Admin\AppData\Local\Temp\agent64.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Update" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\System32\COM Surrogate.exe" /rl HIGHEST /f2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Roaming\System32\COM Surrogate.exe"C:\Users\Admin\AppData\Roaming\System32\COM Surrogate.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 "Update" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\System32\COM Surrogate.exe" /rl HIGHEST /f3⤵
- Creates scheduled task(s)
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
COM Surrogate.exe
memory/812-9-0x00007FF97ED70000-0x00007FF97F831000-memory.dmp
memory/812-11-0x0000000002D40000-0x0000000002D50000-memory.dmp
memory/812-12-0x000000001BF40000-0x000000001BF90000-memory.dmp
memory/812-13-0x000000001C050000-0x000000001C102000-memory.dmp
memory/812-14-0x00007FF97ED70000-0x00007FF97F831000-memory.dmp
memory/812-15-0x0000000002D40000-0x0000000002D50000-memory.dmp
memory/3332-0-0x0000000000BD0000-0x0000000000EF4000-memory.dmp
memory/3332-1-0x00007FF97ED70000-0x00007FF97F831000-memory.dmp
memory/3332-2-0x0000000003140000-0x0000000003150000-memory.dmp
memory/3332-10-0x00007FF97ED70000-0x00007FF97F831000-memory.dmp