Analysis
- max time kernel
148s - max time network
153s - platform
windows10-2004_x64 - resource
win10v2004-20240709-en - resource tags
- submitted
30/07/2024, 01:05
General
- Target 0f07d465b2fb93b367ff2a393574f87b932e4627591091bf8f2f94d3c8e75715.exe
- Size 45KB
- Sample240730-bfmcgazelk
- SHA256 0f07d465b2fb93b367ff2a393574f87b932e4627591091bf8f2f94d3c8e75715
Malware Config
Extracted
-
asyncrat
-
0.5.8
-
Default
-
193.23.160.13:7707
-
zTAsGorHPqSl
-
delay
3
-
install
true
-
install_file
Server-Host.exe
-
install_folder
%AppData%
Signatures
- AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
- Async RAT payload 1 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 6 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Delays execution with timeout.exe 1 IoCs
- Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 23 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of WriteProcessMemory 15 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\0f07d465b2fb93b367ff2a393574f87b932e4627591091bf8f2f94d3c8e75715.exe"C:\Users\Admin\AppData\Local\Temp\0f07d465b2fb93b367ff2a393574f87b932e4627591091bf8f2f94d3c8e75715.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Server-Host" /tr '"C:\Users\Admin\AppData\Roaming\Server-Host.exe"' & exit2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\schtasks.exeschtasks /create /f /sc onlogon /rl highest /tn "Server-Host" /tr '"C:\Users\Admin\AppData\Roaming\Server-Host.exe"'3⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
-
-
-
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpCA74.tmp.bat""2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\timeout.exetimeout 33⤵
- System Location Discovery: System Language Discovery
- Delays execution with timeout.exe
-
-
C:\Users\Admin\AppData\Roaming\Server-Host.exe"C:\Users\Admin\AppData\Roaming\Server-Host.exe"3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
tmpCA74.tmp.bat
Server-Host.exe
memory/2020-14-0x0000000075050000-0x0000000075800000-memory.dmp
memory/2020-15-0x0000000075050000-0x0000000075800000-memory.dmp
memory/4656-0-0x00000000750FE000-0x00000000750FF000-memory.dmp
memory/4656-1-0x00000000002D0000-0x00000000002E2000-memory.dmp
memory/4656-2-0x00000000750F0000-0x00000000758A0000-memory.dmp
memory/4656-3-0x0000000004C60000-0x0000000004CC6000-memory.dmp
memory/4656-4-0x0000000005160000-0x00000000051FC000-memory.dmp
memory/4656-10-0x00000000750F0000-0x00000000758A0000-memory.dmp